Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:
 "Bite-sized chunks this time, to avoid the MTA ratelimiting woes.

   - fs/notify updates

   - ocfs2

   - some of MM"

That laconic "some MM" is mainly the removal of remap_file_pages(),
which is a big simplification of the VM, and which gets rid of a *lot*
of random cruft and special cases because we no longer support the
non-linear mappings that it used.

From a user interface perspective, nothing has changed, because the
remap_file_pages() syscall still exists, it's just done by emulating the
old behavior by creating a lot of individual small mappings instead of
one non-linear one.

The emulation is slower than the old "native" non-linear mappings, but
nobody really uses or cares about remap_file_pages(), and simplifying
the VM is a big advantage.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits)
  memcg: zap memcg_slab_caches and memcg_slab_mutex
  memcg: zap memcg_name argument of memcg_create_kmem_cache
  memcg: zap __memcg_{charge,uncharge}_slab
  mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check
  mm: hugetlb: fix type of hugetlb_treat_as_movable variable
  mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
  mm: memory: merge shared-writable dirtying branches in do_wp_page()
  mm: memory: remove ->vm_file check on shared writable vmas
  xtensa: drop _PAGE_FILE and pte_file()-related helpers
  x86: drop _PAGE_FILE and pte_file()-related helpers
  unicore32: drop pte_file()-related helpers
  um: drop _PAGE_FILE and pte_file()-related helpers
  tile: drop pte_file()-related helpers
  sparc: drop pte_file()-related helpers
  sh: drop _PAGE_FILE and pte_file()-related helpers
  score: drop _PAGE_FILE and pte_file()-related helpers
  s390: drop pte_file()-related helpers
  parisc: drop _PAGE_FILE and pte_file()-related helpers
  openrisc: drop _PAGE_FILE and pte_file()-related helpers
  nios2: drop _PAGE_FILE and pte_file()-related helpers
  ...

Documentation/cachetlb.txt

@@ -317,10 +317,10 @@ maps this page at its virtual address.
 	about doing this.
 
 	The idea is, first at flush_dcache_page() time, if
-	page->mapping->i_mmap is an empty tree and ->i_mmap_nonlinear
-	an empty list, just mark the architecture private page flag bit.
-	Later, in update_mmu_cache(), a check is made of this flag bit,
-	and if set the flush is done and the flag bit is cleared.
+	page->mapping->i_mmap is an empty tree, just mark the architecture
+	private page flag bit.  Later, in update_mmu_cache(), a check is
+	made of this flag bit, and if set the flush is done and the flag
+	bit is cleared.
 
 	IMPORTANT NOTE: It is often important, if you defer the flush,
 			that the actual flush occurs on the same CPU

Documentation/filesystems/fiemap.txt

@@ -196,7 +196,8 @@ struct fiemap_extent_info {
 };
 
 It is intended that the file system should not need to access any of this
-structure directly.
+structure directly. Filesystem handlers should be tolerant to signals and return
+EINTR once fatal signal received.
 
 
 Flag checking should be done at the beginning of the ->fiemap callback via the

Documentation/filesystems/inotify.txt

@@ -4,201 +4,10 @@
 
 
 Document started 15 Mar 2005 by Robert Love <rml@novell.com>
+Document updated 4 Jan 2015 by Zhang Zhen <zhenzhang.zhang@huawei.com>
+	--Deleted obsoleted interface, just refer to manpages for user interface.
 
-
-(i) User Interface
-
-Inotify is controlled by a set of three system calls and normal file I/O on a
-returned file descriptor.
-
-First step in using inotify is to initialise an inotify instance:
-
-	int fd = inotify_init ();
-
-Each instance is associated with a unique, ordered queue.
-
-Change events are managed by "watches".  A watch is an (object,mask) pair where
-the object is a file or directory and the mask is a bit mask of one or more
-inotify events that the application wishes to receive.  See <linux/inotify.h>
-for valid events.  A watch is referenced by a watch descriptor, or wd.
-
-Watches are added via a path to the file.
-
-Watches on a directory will return events on any files inside of the directory.
-
-Adding a watch is simple:
-
-	int wd = inotify_add_watch (fd, path, mask);
-
-Where "fd" is the return value from inotify_init(), path is the path to the
-object to watch, and mask is the watch mask (see <linux/inotify.h>).
-
-You can update an existing watch in the same manner, by passing in a new mask.
-
-An existing watch is removed via
-
-	int ret = inotify_rm_watch (fd, wd);
-
-Events are provided in the form of an inotify_event structure that is read(2)
-from a given inotify instance.  The filename is of dynamic length and follows
-the struct. It is of size len.  The filename is padded with null bytes to
-ensure proper alignment.  This padding is reflected in len.
-
-You can slurp multiple events by passing a large buffer, for example
-
-	size_t len = read (fd, buf, BUF_LEN);
-
-Where "buf" is a pointer to an array of "inotify_event" structures at least
-BUF_LEN bytes in size.  The above example will return as many events as are
-available and fit in BUF_LEN.
-
-Each inotify instance fd is also select()- and poll()-able.
-
-You can find the size of the current event queue via the standard FIONREAD
-ioctl on the fd returned by inotify_init().
-
-All watches are destroyed and cleaned up on close.
-
-
-(ii)
-
-Prototypes:
-
-	int inotify_init (void);
-	int inotify_add_watch (int fd, const char *path, __u32 mask);
-	int inotify_rm_watch (int fd, __u32 mask);
-
-
-(iii) Kernel Interface
-
-Inotify's kernel API consists a set of functions for managing watches and an
-event callback.
-
-To use the kernel API, you must first initialize an inotify instance with a set
-of inotify_operations.  You are given an opaque inotify_handle, which you use
-for any further calls to inotify.
-
-    struct inotify_handle *ih = inotify_init(my_event_handler);
-
-You must provide a function for processing events and a function for destroying
-the inotify watch.
-
-    void handle_event(struct inotify_watch *watch, u32 wd, u32 mask,
-    	              u32 cookie, const char *name, struct inode *inode)
-
-	watch - the pointer to the inotify_watch that triggered this call
-	wd - the watch descriptor
-	mask - describes the event that occurred
-	cookie - an identifier for synchronizing events
-	name - the dentry name for affected files in a directory-based event
-	inode - the affected inode in a directory-based event
-
-    void destroy_watch(struct inotify_watch *watch)
-
-You may add watches by providing a pre-allocated and initialized inotify_watch
-structure and specifying the inode to watch along with an inotify event mask.
-You must pin the inode during the call.  You will likely wish to embed the
-inotify_watch structure in a structure of your own which contains other
-information about the watch.  Once you add an inotify watch, it is immediately
-subject to removal depending on filesystem events.  You must grab a reference if
-you depend on the watch hanging around after the call.
-
-    inotify_init_watch(&my_watch->iwatch);
-    inotify_get_watch(&my_watch->iwatch);	// optional
-    s32 wd = inotify_add_watch(ih, &my_watch->iwatch, inode, mask);
-    inotify_put_watch(&my_watch->iwatch);	// optional
-
-You may use the watch descriptor (wd) or the address of the inotify_watch for
-other inotify operations.  You must not directly read or manipulate data in the
-inotify_watch.  Additionally, you must not call inotify_add_watch() more than
-once for a given inotify_watch structure, unless you have first called either
-inotify_rm_watch() or inotify_rm_wd().
-
-To determine if you have already registered a watch for a given inode, you may
-call inotify_find_watch(), which gives you both the wd and the watch pointer for
-the inotify_watch, or an error if the watch does not exist.
-
-    wd = inotify_find_watch(ih, inode, &watchp);
-
-You may use container_of() on the watch pointer to access your own data
-associated with a given watch.  When an existing watch is found,
-inotify_find_watch() bumps the refcount before releasing its locks.  You must
-put that reference with:
-
-    put_inotify_watch(watchp);
-
-Call inotify_find_update_watch() to update the event mask for an existing watch.
-inotify_find_update_watch() returns the wd of the updated watch, or an error if
-the watch does not exist.
-
-    wd = inotify_find_update_watch(ih, inode, mask);
-
-An existing watch may be removed by calling either inotify_rm_watch() or
-inotify_rm_wd().
-
-    int ret = inotify_rm_watch(ih, &my_watch->iwatch);
-    int ret = inotify_rm_wd(ih, wd);
-
-A watch may be removed while executing your event handler with the following:
-
-    inotify_remove_watch_locked(ih, iwatch);
-
-Call inotify_destroy() to remove all watches from your inotify instance and
-release it.  If there are no outstanding references, inotify_destroy() will call
-your destroy_watch op for each watch.
-
-    inotify_destroy(ih);
-
-When inotify removes a watch, it sends an IN_IGNORED event to your callback.
-You may use this event as an indication to free the watch memory.  Note that
-inotify may remove a watch due to filesystem events, as well as by your request.
-If you use IN_ONESHOT, inotify will remove the watch after the first event, at
-which point you may call the final inotify_put_watch.
-
-(iv) Kernel Interface Prototypes
-
-	struct inotify_handle *inotify_init(struct inotify_operations *ops);
-
-	inotify_init_watch(struct inotify_watch *watch);
-
-	s32 inotify_add_watch(struct inotify_handle *ih,
-		              struct inotify_watch *watch,
-			      struct inode *inode, u32 mask);
-
-	s32 inotify_find_watch(struct inotify_handle *ih, struct inode *inode,
-			       struct inotify_watch **watchp);
-
-	s32 inotify_find_update_watch(struct inotify_handle *ih,
-				      struct inode *inode, u32 mask);
-
-	int inotify_rm_wd(struct inotify_handle *ih, u32 wd);
-
-	int inotify_rm_watch(struct inotify_handle *ih,
-			     struct inotify_watch *watch);
-
-	void inotify_remove_watch_locked(struct inotify_handle *ih,
-					 struct inotify_watch *watch);
-
-	void inotify_destroy(struct inotify_handle *ih);
-
-	void get_inotify_watch(struct inotify_watch *watch);
-	void put_inotify_watch(struct inotify_watch *watch);
-
-
-(v) Internal Kernel Implementation
-
-Each inotify instance is represented by an inotify_handle structure.
-Inotify's userspace consumers also have an inotify_device which is
-associated with the inotify_handle, and on which events are queued.
-
-Each watch is associated with an inotify_watch structure.  Watches are chained
-off of each associated inotify_handle and each associated inode.
-
-See fs/notify/inotify/inotify_fsnotify.c and fs/notify/inotify/inotify_user.c
-for the locking and lifetime rules.
-
-
-(vi) Rationale
+(i) Rationale
 
 Q: What is the design decision behind not tying the watch to the open fd of
    the watched object?

Documentation/filesystems/ocfs2.txt

@@ -100,3 +100,7 @@ coherency=full  (*)	Disallow concurrent O_DIRECT writes, cluster inode
 coherency=buffered	Allow concurrent O_DIRECT writes without EX lock among
 			nodes, which gains high performance at risk of getting
 			stale data on other nodes.
+journal_async_commit	Commit block can be written to disk without waiting
+			for descriptor blocks. If enabled older kernels cannot
+			mount the device. This will enable 'journal_checksum'
+			internally.

Documentation/vm/remap_file_pages.txt

@@ -18,10 +18,9 @@ on 32-bit systems to map files bigger than can linearly fit into 32-bit
 virtual address space. This use-case is not critical anymore since 64-bit
 systems are widely available.
 
-The plan is to deprecate the syscall and replace it with an emulation.
-The emulation will create new VMAs instead of nonlinear mappings. It's
-going to work slower for rare users of remap_file_pages() but ABI is
-preserved.
+The syscall is deprecated and replaced it with an emulation now. The
+emulation creates new VMAs instead of nonlinear mappings. It's going to
+work slower for rare users of remap_file_pages() but ABI is preserved.
 
 One side effect of emulation (apart from performance) is that user can hit
 vm.max_map_count limit more easily due to additional VMAs. See comment for

arch/alpha/include/asm/pgtable.h

@@ -73,7 +73,6 @@ struct vm_area_struct;
 /* .. and these are ours ... */
 #define _PAGE_DIRTY	0x20000
 #define _PAGE_ACCESSED	0x40000
-#define _PAGE_FILE	0x80000	/* set:pagecache, unset:swap */
 
 /*
  * NOTE! The "accessed" bit isn't necessarily exact:  it can be kept exactly
@@ -268,7 +267,6 @@ extern inline void pgd_clear(pgd_t * pgdp)	{ pgd_val(*pgdp) = 0; }
 extern inline int pte_write(pte_t pte)		{ return !(pte_val(pte) & _PAGE_FOW); }
 extern inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & _PAGE_DIRTY; }
 extern inline int pte_young(pte_t pte)		{ return pte_val(pte) & _PAGE_ACCESSED; }
-extern inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
 extern inline int pte_special(pte_t pte)	{ return 0; }
 
 extern inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) |= _PAGE_FOW; return pte; }
@@ -345,11 +343,6 @@ extern inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-#define pte_to_pgoff(pte)	(pte_val(pte) >> 32)
-#define pgoff_to_pte(off)	((pte_t) { ((off) << 32) | _PAGE_FILE })
-
-#define PTE_FILE_MAX_BITS	32
-
 #ifndef CONFIG_DISCONTIGMEM
 #define kern_addr_valid(addr)	(1)
 #endif

arch/arc/include/asm/pgtable.h

@@ -61,7 +61,6 @@
 #define _PAGE_WRITE         (1<<4)	/* Page has user write perm (H) */
 #define _PAGE_READ          (1<<5)	/* Page has user read perm (H) */
 #define _PAGE_MODIFIED      (1<<6)	/* Page modified (dirty) (S) */
-#define _PAGE_FILE          (1<<7)	/* page cache/ swap (S) */
 #define _PAGE_GLOBAL        (1<<8)	/* Page is global (H) */
 #define _PAGE_PRESENT       (1<<10)	/* TLB entry is valid (H) */
 
@@ -73,7 +72,6 @@
 #define _PAGE_READ          (1<<3)	/* Page has user read perm (H) */
 #define _PAGE_ACCESSED      (1<<4)	/* Page is accessed (S) */
 #define _PAGE_MODIFIED      (1<<5)	/* Page modified (dirty) (S) */
-#define _PAGE_FILE          (1<<6)	/* page cache/ swap (S) */
 #define _PAGE_GLOBAL        (1<<8)	/* Page is global (H) */
 #define _PAGE_PRESENT       (1<<9)	/* TLB entry is valid (H) */
 #define _PAGE_SHARED_CODE   (1<<11)	/* Shared Code page with cmn vaddr
@@ -268,15 +266,6 @@ static inline void pmd_set(pmd_t *pmdp, pte_t *ptep)
 	pte;								\
 })
 
-/* TBD: Non linear mapping stuff */
-static inline int pte_file(pte_t pte)
-{
-	return pte_val(pte) & _PAGE_FILE;
-}
-
-#define PTE_FILE_MAX_BITS	30
-#define pgoff_to_pte(x)         __pte(x)
-#define pte_to_pgoff(x)		(pte_val(x) >> 2)
 #define pte_pfn(pte)		(pte_val(pte) >> PAGE_SHIFT)
 #define pfn_pte(pfn, prot)	(__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)))
 #define __pte_index(addr)	(((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
@@ -364,7 +353,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
 
 /* Encode swap {type,off} tuple into PTE
  * We reserve 13 bits for 5-bit @type, keeping bits 12-5 zero, ensuring that
- * both PAGE_FILE and PAGE_PRESENT are zero in a PTE holding swap "identifier"
+ * PAGE_PRESENT is zero in a PTE holding swap "identifier"
  */
 #define __swp_entry(type, off)	((swp_entry_t) { \
 					((type) & 0x1f) | ((off) << 13) })

arch/arm/include/asm/pgtable-2level.h

@@ -118,7 +118,6 @@
 #define L_PTE_VALID		(_AT(pteval_t, 1) << 0)		/* Valid */
 #define L_PTE_PRESENT		(_AT(pteval_t, 1) << 0)
 #define L_PTE_YOUNG		(_AT(pteval_t, 1) << 1)
-#define L_PTE_FILE		(_AT(pteval_t, 1) << 2)	/* only when !PRESENT */
 #define L_PTE_DIRTY		(_AT(pteval_t, 1) << 6)
 #define L_PTE_RDONLY		(_AT(pteval_t, 1) << 7)
 #define L_PTE_USER		(_AT(pteval_t, 1) << 8)

arch/arm/include/asm/pgtable-3level.h

@@ -77,7 +77,6 @@
  */
 #define L_PTE_VALID		(_AT(pteval_t, 1) << 0)		/* Valid */
 #define L_PTE_PRESENT		(_AT(pteval_t, 3) << 0)		/* Present */
-#define L_PTE_FILE		(_AT(pteval_t, 1) << 2)		/* only when !PRESENT */
 #define L_PTE_USER		(_AT(pteval_t, 1) << 6)		/* AP[1] */
 #define L_PTE_SHARED		(_AT(pteval_t, 3) << 8)		/* SH[1:0], inner shareable */
 #define L_PTE_YOUNG		(_AT(pteval_t, 1) << 10)	/* AF */

arch/arm/include/asm/pgtable-nommu.h

@@ -54,8 +54,6 @@
 
 typedef pte_t *pte_addr_t;
 
-static inline int pte_file(pte_t pte) { return 0; }
-
 /*
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..

arch/arm/include/asm/pgtable.h

@@ -318,12 +318,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  *
  *   3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
  *   1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
- *   <--------------- offset ----------------------> < type -> 0 0 0
+ *   <--------------- offset ------------------------> < type -> 0 0
  *
- * This gives us up to 31 swap files and 64GB per swap file.  Note that
+ * This gives us up to 31 swap files and 128GB per swap file.  Note that
  * the offset field is always non-zero.
  */
-#define __SWP_TYPE_SHIFT	3
+#define __SWP_TYPE_SHIFT	2
 #define __SWP_TYPE_BITS		5
 #define __SWP_TYPE_MASK		((1 << __SWP_TYPE_BITS) - 1)
 #define __SWP_OFFSET_SHIFT	(__SWP_TYPE_BITS + __SWP_TYPE_SHIFT)
@@ -342,20 +342,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  */
 #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > __SWP_TYPE_BITS)
 
-/*
- * Encode and decode a file entry.  File entries are stored in the Linux
- * page tables as follows:
- *
- *   3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
- *   1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
- *   <----------------------- offset ------------------------> 1 0 0
- */
-#define pte_file(pte)		(pte_val(pte) & L_PTE_FILE)
-#define pte_to_pgoff(x)		(pte_val(x) >> 3)
-#define pgoff_to_pte(x)		__pte(((x) << 3) | L_PTE_FILE)
-
-#define PTE_FILE_MAX_BITS	29
-
 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
 /* FIXME: this is not correct */
 #define kern_addr_valid(addr)	(1)

arch/arm/mm/proc-macros.S

@@ -98,7 +98,7 @@
 #endif
 #if !defined (CONFIG_ARM_LPAE) && \
 	(L_PTE_XN+L_PTE_USER+L_PTE_RDONLY+L_PTE_DIRTY+L_PTE_YOUNG+\
-	 L_PTE_FILE+L_PTE_PRESENT) > L_PTE_SHARED
+	 L_PTE_PRESENT) > L_PTE_SHARED
 #error Invalid Linux PTE bit settings
 #endif
 #endif	/* CONFIG_MMU */

arch/arm64/include/asm/pgtable.h

@@ -25,7 +25,6 @@
  * Software defined PTE bits definition.
  */
 #define PTE_VALID		(_AT(pteval_t, 1) << 0)
-#define PTE_FILE		(_AT(pteval_t, 1) << 2)	/* only when !pte_present() */
 #define PTE_DIRTY		(_AT(pteval_t, 1) << 55)
 #define PTE_SPECIAL		(_AT(pteval_t, 1) << 56)
 #define PTE_WRITE		(_AT(pteval_t, 1) << 57)
@@ -469,13 +468,12 @@ extern pgd_t idmap_pg_dir[PTRS_PER_PGD];
 /*
  * Encode and decode a swap entry:
  *	bits 0-1:	present (must be zero)
- *	bit  2:		PTE_FILE
- *	bits 3-8:	swap type
- *	bits 9-57:	swap offset
+ *	bits 2-7:	swap type
+ *	bits 8-57:	swap offset
  */
-#define __SWP_TYPE_SHIFT	3
+#define __SWP_TYPE_SHIFT	2
 #define __SWP_TYPE_BITS		6
-#define __SWP_OFFSET_BITS	49
+#define __SWP_OFFSET_BITS	50
 #define __SWP_TYPE_MASK		((1 << __SWP_TYPE_BITS) - 1)
 #define __SWP_OFFSET_SHIFT	(__SWP_TYPE_BITS + __SWP_TYPE_SHIFT)
 #define __SWP_OFFSET_MASK	((1UL << __SWP_OFFSET_BITS) - 1)
@@ -493,18 +491,6 @@ extern pgd_t idmap_pg_dir[PTRS_PER_PGD];
  */
 #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > __SWP_TYPE_BITS)
 
-/*
- * Encode and decode a file entry:
- *	bits 0-1:	present (must be zero)
- *	bit  2:		PTE_FILE
- *	bits 3-57:	file offset / PAGE_SIZE
- */
-#define pte_file(pte)		(pte_val(pte) & PTE_FILE)
-#define pte_to_pgoff(x)		(pte_val(x) >> 3)
-#define pgoff_to_pte(x)		__pte(((x) << 3) | PTE_FILE)
-
-#define PTE_FILE_MAX_BITS	55
-
 extern int kern_addr_valid(unsigned long addr);
 
 #include <asm-generic/pgtable.h>

arch/avr32/include/asm/pgtable.h

@@ -86,9 +86,6 @@ extern struct page *empty_zero_page;
 #define _PAGE_BIT_PRESENT	10
 #define _PAGE_BIT_ACCESSED	11 /* software: page was accessed */
 
-/* The following flags are only valid when !PRESENT */
-#define _PAGE_BIT_FILE		0 /* software: pagecache or swap? */
-
 #define _PAGE_WT		(1 << _PAGE_BIT_WT)
 #define _PAGE_DIRTY		(1 << _PAGE_BIT_DIRTY)
 #define _PAGE_EXECUTE		(1 << _PAGE_BIT_EXECUTE)
@@ -101,7 +98,6 @@ extern struct page *empty_zero_page;
 /* Software flags */
 #define _PAGE_ACCESSED		(1 << _PAGE_BIT_ACCESSED)
 #define _PAGE_PRESENT		(1 << _PAGE_BIT_PRESENT)
-#define _PAGE_FILE		(1 << _PAGE_BIT_FILE)
 
 /*
  * Page types, i.e. sizes. _PAGE_TYPE_NONE corresponds to what is
@@ -210,14 +206,6 @@ static inline int pte_special(pte_t pte)
 	return 0;
 }
 
-/*
- * The following only work if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)
-{
-	return pte_val(pte) & _PAGE_FILE;
-}
-
 /* Mutator functions for PTE bits */
 static inline pte_t pte_wrprotect(pte_t pte)
 {
@@ -329,7 +317,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma,
  * Encode and decode a swap entry
  *
  * Constraints:
- *   _PAGE_FILE at bit 0
  *   _PAGE_TYPE_* at bits 2-3 (for emulating _PAGE_PROTNONE)
  *   _PAGE_PRESENT at bit 10
  *
@@ -346,18 +333,6 @@ extern void update_mmu_cache(struct vm_area_struct * vma,
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-/*
- * Encode and decode a nonlinear file mapping entry. We have to
- * preserve _PAGE_FILE and _PAGE_PRESENT here. _PAGE_TYPE_* isn't
- * necessary, since _PAGE_FILE implies !_PAGE_PROTNONE (?)
- */
-#define PTE_FILE_MAX_BITS	30
-#define pte_to_pgoff(pte)	(((pte_val(pte) >> 1) & 0x1ff)		\
-				 | ((pte_val(pte) >> 11) << 9))
-#define pgoff_to_pte(off)	((pte_t) { ((((off) & 0x1ff) << 1)	\
-					    | (((off) >> 9) << 11)	\
-					    | _PAGE_FILE) })
-
 typedef pte_t *pte_addr_t;
 
 #define kern_addr_valid(addr)	(1)

arch/blackfin/include/asm/pgtable.h

@@ -45,11 +45,6 @@ extern void paging_init(void);
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-static inline int pte_file(pte_t pte)
-{
-	return 0;
-}
-
 #define set_pte(pteptr, pteval) (*(pteptr) = pteval)
 #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
 

arch/c6x/include/asm/pgtable.h

@@ -50,11 +50,6 @@ extern void paging_init(void);
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-static inline int pte_file(pte_t pte)
-{
-	return 0;
-}
-
 #define set_pte(pteptr, pteval) (*(pteptr) = pteval)
 #define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
 

arch/cris/include/arch-v10/arch/mmu.h

@@ -58,7 +58,6 @@ typedef struct
 /* Bits the HW doesn't care about but the kernel uses them in SW */
 
 #define _PAGE_PRESENT   (1<<4)  /* page present in memory */
-#define _PAGE_FILE      (1<<5)  /* set: pagecache, unset: swap (when !PRESENT) */
 #define _PAGE_ACCESSED	(1<<5)  /* simulated in software using valid bit */
 #define _PAGE_MODIFIED	(1<<6)  /* simulated in software using we bit */
 #define _PAGE_READ      (1<<7)  /* read-enabled */
@@ -105,6 +104,4 @@ typedef struct
 #define __S110	PAGE_SHARED
 #define __S111	PAGE_SHARED
 
-#define PTE_FILE_MAX_BITS	26
-
 #endif

arch/cris/include/arch-v32/arch/mmu.h

@@ -53,7 +53,6 @@ typedef struct
  * software.
  */
 #define _PAGE_PRESENT   (1 << 5)   /* Page is present in memory. */
-#define _PAGE_FILE      (1 << 6)   /* 1=pagecache, 0=swap (when !present) */
 #define _PAGE_ACCESSED  (1 << 6)   /* Simulated in software using valid bit. */
 #define _PAGE_MODIFIED  (1 << 7)   /* Simulated in software using we bit. */
 #define _PAGE_READ      (1 << 8)   /* Read enabled. */
@@ -108,6 +107,4 @@ typedef struct
 #define __S110  PAGE_SHARED_EXEC
 #define __S111  PAGE_SHARED_EXEC
 
-#define PTE_FILE_MAX_BITS	25
-
 #endif /* _ASM_CRIS_ARCH_MMU_H */

arch/cris/include/asm/pgtable.h

@@ -114,7 +114,6 @@ extern unsigned long empty_zero_page;
 static inline int pte_write(pte_t pte)          { return pte_val(pte) & _PAGE_WRITE; }
 static inline int pte_dirty(pte_t pte)          { return pte_val(pte) & _PAGE_MODIFIED; }
 static inline int pte_young(pte_t pte)          { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)           { return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte)	{ return 0; }
 
 static inline pte_t pte_wrprotect(pte_t pte)
@@ -290,9 +289,6 @@ static inline void update_mmu_cache(struct vm_area_struct * vma,
  */
 #define pgtable_cache_init()   do { } while (0)
 
-#define pte_to_pgoff(x)	(pte_val(x) >> 6)
-#define pgoff_to_pte(x)	__pte(((x) << 6) | _PAGE_FILE)
-
 typedef pte_t *pte_addr_t;
 
 #endif /* __ASSEMBLY__ */

arch/frv/include/asm/pgtable.h

@@ -62,10 +62,6 @@ typedef pte_t *pte_addr_t;
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-#ifndef __ASSEMBLY__
-static inline int pte_file(pte_t pte) { return 0; }
-#endif
-
 #define ZERO_PAGE(vaddr)	({ BUG(); NULL; })
 
 #define swapper_pg_dir		((pgd_t *) NULL)
@@ -298,7 +294,6 @@ static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address)
 
 #define _PAGE_RESERVED_MASK	(xAMPRx_RESERVED8 | xAMPRx_RESERVED13)
 
-#define _PAGE_FILE		0x002	/* set:pagecache unset:swap */
 #define _PAGE_PROTNONE		0x000	/* If not present */
 
 #define _PAGE_CHG_MASK		(PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
@@ -463,27 +458,15 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  * Handle swap and file entries
  * - the PTE is encoded in the following format:
  *	bit 0:		Must be 0 (!_PAGE_PRESENT)
- *	bit 1:		Type: 0 for swap, 1 for file (_PAGE_FILE)
- *	bits 2-7:	Swap type
- *	bits 8-31:	Swap offset
- *	bits 2-31:	File pgoff
+ *	bits 1-6:	Swap type
+ *	bits 7-31:	Swap offset
  */
-#define __swp_type(x)			(((x).val >> 2) & 0x1f)
-#define __swp_offset(x)			((x).val >> 8)
-#define __swp_entry(type, offset)	((swp_entry_t) { ((type) << 2) | ((offset) << 8) })
+#define __swp_type(x)			(((x).val >> 1) & 0x1f)
+#define __swp_offset(x)			((x).val >> 7)
+#define __swp_entry(type, offset)	((swp_entry_t) { ((type) << 1) | ((offset) << 7) })
 #define __pte_to_swp_entry(_pte)	((swp_entry_t) { (_pte).pte })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-static inline int pte_file(pte_t pte)
-{
-	return pte.pte & _PAGE_FILE;
-}
-
-#define PTE_FILE_MAX_BITS	29
-
-#define pte_to_pgoff(PTE)	((PTE).pte >> 2)
-#define pgoff_to_pte(off)	__pte((off) << 2 | _PAGE_FILE)
-
 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
 #define PageSkip(page)		(0)
 #define kern_addr_valid(addr)	(1)

arch/hexagon/include/asm/pgtable.h

@@ -61,13 +61,6 @@ extern unsigned long zero_page_mask;
 #define _PAGE_DIRTY	(1<<1)
 #define _PAGE_ACCESSED	(1<<2)
 
-/*
- * _PAGE_FILE is only meaningful if _PAGE_PRESENT is false, while
- * _PAGE_DIRTY is only meaningful if _PAGE_PRESENT is true.
- * So we can overload the bit...
- */
-#define _PAGE_FILE	_PAGE_DIRTY /* set:  pagecache, unset = swap */
-
 /*
  * For now, let's say that Valid and Present are the same thing.
  * Alternatively, we could say that it's the "or" of R, W, and X
@@ -456,57 +449,36 @@ static inline int pte_exec(pte_t pte)
 #define pgtable_cache_init()    do { } while (0)
 
 /*
- * Swap/file PTE definitions.  If _PAGE_PRESENT is zero, the rest of the
- * PTE is interpreted as swap information.  Depending on the _PAGE_FILE
- * bit, the remaining free bits are eitehr interpreted as a file offset
- * or a swap type/offset tuple.  Rather than have the TLB fill handler
- * test _PAGE_PRESENT, we're going to reserve the permissions bits
- * and set them to all zeros for swap entries, which speeds up the
- * miss handler at the cost of 3 bits of offset.  That trade-off can
- * be revisited if necessary, but Hexagon processor architecture and
- * target applications suggest a lot of TLB misses and not much swap space.
+ * Swap/file PTE definitions.  If _PAGE_PRESENT is zero, the rest of the PTE is
+ * interpreted as swap information.  The remaining free bits are interpreted as
+ * swap type/offset tuple.  Rather than have the TLB fill handler test
+ * _PAGE_PRESENT, we're going to reserve the permissions bits and set them to
+ * all zeros for swap entries, which speeds up the miss handler at the cost of
+ * 3 bits of offset.  That trade-off can be revisited if necessary, but Hexagon
+ * processor architecture and target applications suggest a lot of TLB misses
+ * and not much swap space.
  *
  * Format of swap PTE:
  *	bit	0:	Present (zero)
- *	bit	1:	_PAGE_FILE (zero)
- *	bits	2-6:	swap type (arch independent layer uses 5 bits max)
- *	bits	7-9:	bits 2:0 of offset
- *	bits 10-12:	effectively _PAGE_PROTNONE (all zero)
- *	bits 13-31:  bits 21:3 of swap offset
- *
- * Format of file PTE:
- *	bit	0:	Present (zero)
- *	bit	1:	_PAGE_FILE (zero)
- *	bits	2-9:	bits 7:0 of offset
- *	bits 10-12:	effectively _PAGE_PROTNONE (all zero)
- *	bits 13-31:  bits 26:8 of swap offset
+ *	bits	1-5:	swap type (arch independent layer uses 5 bits max)
+ *	bits	6-9:	bits 3:0 of offset
+ *	bits	10-12:	effectively _PAGE_PROTNONE (all zero)
+ *	bits	13-31:  bits 22:4 of swap offset
  *
  * The split offset makes some of the following macros a little gnarly,
  * but there's plenty of precedent for this sort of thing.
  */
-#define PTE_FILE_MAX_BITS     27
 
 /* Used for swap PTEs */
-#define __swp_type(swp_pte)		(((swp_pte).val >> 2) & 0x1f)
+#define __swp_type(swp_pte)		(((swp_pte).val >> 1) & 0x1f)
 
 #define __swp_offset(swp_pte) \
-	((((swp_pte).val >> 7) & 0x7) | (((swp_pte).val >> 10) & 0x003ffff8))
+	((((swp_pte).val >> 6) & 0xf) | (((swp_pte).val >> 9) & 0x7ffff0))
 
 #define __swp_entry(type, offset) \
 	((swp_entry_t)	{ \
-		((type << 2) | \
-		 ((offset & 0x3ffff8) << 10) | ((offset & 0x7) << 7)) })
-
-/* Used for file PTEs */
-#define pte_file(pte) \
-	((pte_val(pte) & (_PAGE_FILE | _PAGE_PRESENT)) == _PAGE_FILE)
-
-#define pte_to_pgoff(pte) \
-	(((pte_val(pte) >> 2) & 0xff) | ((pte_val(pte) >> 5) & 0x07ffff00))
-
-#define pgoff_to_pte(off) \
-	((pte_t) { ((((off) & 0x7ffff00) << 5) | (((off) & 0xff) << 2)\
-	| _PAGE_FILE) })
+		((type << 1) | \
+		 ((offset & 0x7ffff0) << 9) | ((offset & 0xf) << 6)) })
 
 /*  Oh boy.  There are a lot of possible arch overrides found in this file.  */
 #include <asm-generic/pgtable.h>

arch/ia64/include/asm/pgtable.h

@@ -57,9 +57,6 @@
 #define _PAGE_ED		(__IA64_UL(1) << 52)	/* exception deferral */
 #define _PAGE_PROTNONE		(__IA64_UL(1) << 63)
 
-/* Valid only for a PTE with the present bit cleared: */
-#define _PAGE_FILE		(1 << 1)		/* see swap & file pte remarks below */
-
 #define _PFN_MASK		_PAGE_PPN_MASK
 /* Mask of bits which may be changed by pte_modify(); the odd bits are there for _PAGE_PROTNONE */
 #define _PAGE_CHG_MASK	(_PAGE_P | _PAGE_PROTNONE | _PAGE_PL_MASK | _PAGE_AR_MASK | _PAGE_ED)
@@ -300,7 +297,6 @@ extern unsigned long VMALLOC_END;
 #define pte_exec(pte)		((pte_val(pte) & _PAGE_AR_RX) != 0)
 #define pte_dirty(pte)		((pte_val(pte) & _PAGE_D) != 0)
 #define pte_young(pte)		((pte_val(pte) & _PAGE_A) != 0)
-#define pte_file(pte)		((pte_val(pte) & _PAGE_FILE) != 0)
 #define pte_special(pte)	0
 
 /*
@@ -472,27 +468,16 @@ extern void paging_init (void);
  *
  * Format of swap pte:
  *	bit   0   : present bit (must be zero)
- *	bit   1   : _PAGE_FILE (must be zero)
- *	bits  2- 8: swap-type
- *	bits  9-62: swap offset
- *	bit  63   : _PAGE_PROTNONE bit
- *
- * Format of file pte:
- *	bit   0   : present bit (must be zero)
- *	bit   1   : _PAGE_FILE (must be one)
- *	bits  2-62: file_offset/PAGE_SIZE
+ *	bits  1- 7: swap-type
+ *	bits  8-62: swap offset
  *	bit  63   : _PAGE_PROTNONE bit
  */
-#define __swp_type(entry)		(((entry).val >> 2) & 0x7f)
-#define __swp_offset(entry)		(((entry).val << 1) >> 10)
-#define __swp_entry(type,offset)	((swp_entry_t) { ((type) << 2) | ((long) (offset) << 9) })
+#define __swp_type(entry)		(((entry).val >> 1) & 0x7f)
+#define __swp_offset(entry)		(((entry).val << 1) >> 9)
+#define __swp_entry(type,offset)	((swp_entry_t) { ((type) << 1) | ((long) (offset) << 8) })
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-#define PTE_FILE_MAX_BITS		61
-#define pte_to_pgoff(pte)		((pte_val(pte) << 1) >> 3)
-#define pgoff_to_pte(off)		((pte_t) { ((off) << 2) | _PAGE_FILE })
-
 /*
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..

arch/m32r/include/asm/pgtable-2level.h

@@ -70,9 +70,5 @@ static inline pmd_t *pmd_offset(pgd_t * dir, unsigned long address)
 #define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
 #define pfn_pmd(pfn, prot)	__pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
 
-#define PTE_FILE_MAX_BITS	29
-#define pte_to_pgoff(pte)	(((pte_val(pte) >> 2) & 0x7f) | (((pte_val(pte) >> 10)) << 7))
-#define pgoff_to_pte(off)	((pte_t) { (((off) & 0x7f) << 2) | (((off) >> 7) << 10) | _PAGE_FILE })
-
 #endif /* __KERNEL__ */
 #endif /* _ASM_M32R_PGTABLE_2LEVEL_H */

arch/m32r/include/asm/pgtable.h

@@ -80,8 +80,6 @@ extern unsigned long empty_zero_page[1024];
  */
 
 #define _PAGE_BIT_DIRTY		0	/* software: page changed */
-#define _PAGE_BIT_FILE		0	/* when !present: nonlinear file
-					   mapping */
 #define _PAGE_BIT_PRESENT	1	/* Valid: page is valid */
 #define _PAGE_BIT_GLOBAL	2	/* Global */
 #define _PAGE_BIT_LARGE		3	/* Large */
@@ -93,7 +91,6 @@ extern unsigned long empty_zero_page[1024];
 #define _PAGE_BIT_PROTNONE	9	/* software: if not present */
 
 #define _PAGE_DIRTY		(1UL << _PAGE_BIT_DIRTY)
-#define _PAGE_FILE		(1UL << _PAGE_BIT_FILE)
 #define _PAGE_PRESENT		(1UL << _PAGE_BIT_PRESENT)
 #define _PAGE_GLOBAL		(1UL << _PAGE_BIT_GLOBAL)
 #define _PAGE_LARGE		(1UL << _PAGE_BIT_LARGE)
@@ -206,14 +203,6 @@ static inline int pte_write(pte_t pte)
 	return pte_val(pte) & _PAGE_WRITE;
 }
 
-/*
- * The following only works if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)
-{
-	return pte_val(pte) & _PAGE_FILE;
-}
-
 static inline int pte_special(pte_t pte)
 {
 	return 0;

arch/m68k/include/asm/mcf_pgtable.h

@@ -35,7 +35,6 @@
  * hitting hardware.
  */
 #define CF_PAGE_DIRTY		0x00000001
-#define CF_PAGE_FILE		0x00000200
 #define CF_PAGE_ACCESSED	0x00001000
 
 #define _PAGE_CACHE040		0x020   /* 68040 cache mode, cachable, copyback */
@@ -243,11 +242,6 @@ static inline int pte_young(pte_t pte)
 	return pte_val(pte) & CF_PAGE_ACCESSED;
 }
 
-static inline int pte_file(pte_t pte)
-{
-	return pte_val(pte) & CF_PAGE_FILE;
-}
-
 static inline int pte_special(pte_t pte)
 {
 	return 0;
@@ -391,26 +385,13 @@ static inline void cache_page(void *vaddr)
 	*ptep = pte_mkcache(*ptep);
 }
 
-#define PTE_FILE_MAX_BITS	21
-#define PTE_FILE_SHIFT		11
-
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
-	return pte_val(pte) >> PTE_FILE_SHIFT;
-}
-
-static inline pte_t pgoff_to_pte(unsigned pgoff)
-{
-	return __pte((pgoff << PTE_FILE_SHIFT) + CF_PAGE_FILE);
-}
-
 /*
  * Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e))
  */
 #define __swp_type(x)		((x).val & 0xFF)
-#define __swp_offset(x)		((x).val >> PTE_FILE_SHIFT)
+#define __swp_offset(x)		((x).val >> 11)
 #define __swp_entry(typ, off)	((swp_entry_t) { (typ) | \
-					(off << PTE_FILE_SHIFT) })
+					(off << 11) })
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	(__pte((x).val))
 

arch/m68k/include/asm/motorola_pgtable.h

@@ -28,7 +28,6 @@
 #define _PAGE_CHG_MASK  (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_NOCACHE)
 
 #define _PAGE_PROTNONE	0x004
-#define _PAGE_FILE	0x008	/* pagecache or swap? */
 
 #ifndef __ASSEMBLY__
 
@@ -168,7 +167,6 @@ static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
 static inline int pte_write(pte_t pte)		{ return !(pte_val(pte) & _PAGE_RONLY); }
 static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)		{ return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte)	{ return 0; }
 
 static inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) |= _PAGE_RONLY; return pte; }
@@ -266,19 +264,6 @@ static inline void cache_page(void *vaddr)
 	}
 }
 
-#define PTE_FILE_MAX_BITS	28
-
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
-	return pte.pte >> 4;
-}
-
-static inline pte_t pgoff_to_pte(unsigned off)
-{
-	pte_t pte = { (off << 4) + _PAGE_FILE };
-	return pte;
-}
-
 /* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */
 #define __swp_type(x)		(((x).val >> 4) & 0xff)
 #define __swp_offset(x)		((x).val >> 12)

arch/m68k/include/asm/pgtable_no.h

@@ -37,8 +37,6 @@ extern void paging_init(void);
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-static inline int pte_file(pte_t pte) { return 0; }
-
 /*
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..

arch/m68k/include/asm/sun3_pgtable.h

@@ -38,8 +38,6 @@
 #define _PAGE_PRESENT	(SUN3_PAGE_VALID)
 #define _PAGE_ACCESSED	(SUN3_PAGE_ACCESSED)
 
-#define PTE_FILE_MAX_BITS 28
-
 /* Compound page protection values. */
 //todo: work out which ones *should* have SUN3_PAGE_NOCACHE and fix...
 // is it just PAGE_KERNEL and PAGE_SHARED?
@@ -168,7 +166,6 @@ static inline void pgd_clear (pgd_t *pgdp) {}
 static inline int pte_write(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_WRITEABLE; }
 static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_MODIFIED; }
 static inline int pte_young(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)		{ return pte_val(pte) & SUN3_PAGE_ACCESSED; }
 static inline int pte_special(pte_t pte)	{ return 0; }
 
 static inline pte_t pte_wrprotect(pte_t pte)	{ pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
@@ -202,18 +199,6 @@ static inline pmd_t *pmd_offset (pgd_t *pgd, unsigned long address)
 	return (pmd_t *) pgd;
 }
 
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
-	return pte.pte & SUN3_PAGE_PGNUM_MASK;
-}
-
-static inline pte_t pgoff_to_pte(unsigned off)
-{
-	pte_t pte = { off + SUN3_PAGE_ACCESSED };
-	return pte;
-}
-
-
 /* Find an entry in the third-level pagetable. */
 #define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
 #define pte_offset_kernel(pmd, address) ((pte_t *) __pmd_page(*pmd) + pte_index(address))

arch/metag/include/asm/pgtable.h

@@ -47,7 +47,6 @@
  */
 #define _PAGE_ACCESSED		_PAGE_ALWAYS_ZERO_1
 #define _PAGE_DIRTY		_PAGE_ALWAYS_ZERO_2
-#define _PAGE_FILE		_PAGE_ALWAYS_ZERO_3
 
 /* Pages owned, and protected by, the kernel. */
 #define _PAGE_KERNEL		_PAGE_PRIV
@@ -219,7 +218,6 @@ extern unsigned long empty_zero_page;
 static inline int pte_write(pte_t pte)   { return pte_val(pte) & _PAGE_WRITE; }
 static inline int pte_dirty(pte_t pte)   { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)   { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)    { return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte) { return 0; }
 
 static inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= (~_PAGE_WRITE); return pte; }
@@ -327,10 +325,6 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-#define PTE_FILE_MAX_BITS	22
-#define pte_to_pgoff(x)		(pte_val(x) >> 10)
-#define pgoff_to_pte(x)		__pte(((x) << 10) | _PAGE_FILE)
-
 #define kern_addr_valid(addr)	(1)
 
 /*

arch/microblaze/include/asm/pgtable.h

@@ -40,10 +40,6 @@ extern int mem_init_done;
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-#ifndef __ASSEMBLY__
-static inline int pte_file(pte_t pte) { return 0; }
-#endif /* __ASSEMBLY__ */
-
 #define ZERO_PAGE(vaddr)	({ BUG(); NULL; })
 
 #define swapper_pg_dir ((pgd_t *) NULL)
@@ -207,7 +203,6 @@ static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
 
 /* Definitions for MicroBlaze. */
 #define	_PAGE_GUARDED	0x001	/* G: page is guarded from prefetch */
-#define _PAGE_FILE	0x001	/* when !present: nonlinear file mapping */
 #define _PAGE_PRESENT	0x002	/* software: PTE contains a translation */
 #define	_PAGE_NO_CACHE	0x004	/* I: caching is inhibited */
 #define	_PAGE_WRITETHRU	0x008	/* W: caching is write-through */
@@ -337,7 +332,6 @@ static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; }
 static inline int pte_exec(pte_t pte)  { return pte_val(pte) & _PAGE_EXEC; }
 static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)  { return pte_val(pte) & _PAGE_FILE; }
 
 static inline void pte_uncache(pte_t pte) { pte_val(pte) |= _PAGE_NO_CACHE; }
 static inline void pte_cache(pte_t pte)   { pte_val(pte) &= ~_PAGE_NO_CACHE; }
@@ -499,11 +493,6 @@ static inline pmd_t *pmd_offset(pgd_t *dir, unsigned long address)
 
 #define pte_unmap(pte)		kunmap_atomic(pte)
 
-/* Encode and decode a nonlinear file mapping entry */
-#define PTE_FILE_MAX_BITS	29
-#define pte_to_pgoff(pte)	(pte_val(pte) >> 3)
-#define pgoff_to_pte(off)	((pte_t) { ((off) << 3) | _PAGE_FILE })
-
 extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
 
 /*

arch/mips/include/asm/pgtable-32.h

@@ -161,22 +161,6 @@ pfn_pte(unsigned long pfn, pgprot_t prot)
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-/*
- * Encode and decode a nonlinear file mapping entry
- */
-#define pte_to_pgoff(_pte)		((((_pte).pte >> 1 ) & 0x07) | \
-					 (((_pte).pte >> 2 ) & 0x38) | \
-					 (((_pte).pte >> 10) <<	 6 ))
-
-#define pgoff_to_pte(off)		((pte_t) { (((off) & 0x07) << 1 ) | \
-						   (((off) & 0x38) << 2 ) | \
-						   (((off) >>  6 ) << 10) | \
-						   _PAGE_FILE })
-
-/*
- * Bits 0, 4, 8, and 9 are taken, split up 28 bits of offset into this range:
- */
-#define PTE_FILE_MAX_BITS		28
 #else
 
 #if defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32)
@@ -188,13 +172,6 @@ pfn_pte(unsigned long pfn, pgprot_t prot)
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { (pte).pte_high })
 #define __swp_entry_to_pte(x)		((pte_t) { 0, (x).val })
 
-/*
- * Bits 0 and 1 of pte_high are taken, use the rest for the page offset...
- */
-#define pte_to_pgoff(_pte)		((_pte).pte_high >> 2)
-#define pgoff_to_pte(off)		((pte_t) { _PAGE_FILE, (off) << 2 })
-
-#define PTE_FILE_MAX_BITS		30
 #else
 /*
  * Constraints:
@@ -209,19 +186,6 @@ pfn_pte(unsigned long pfn, pgprot_t prot)
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-/*
- * Encode and decode a nonlinear file mapping entry
- */
-#define pte_to_pgoff(_pte)		((((_pte).pte >> 1) & 0x7) | \
-					 (((_pte).pte >> 2) & 0x8) | \
-					 (((_pte).pte >> 8) <<	4))
-
-#define pgoff_to_pte(off)		((pte_t) { (((off) & 0x7) << 1) | \
-						   (((off) & 0x8) << 2) | \
-						   (((off) >>  4) << 8) | \
-						   _PAGE_FILE })
-
-#define PTE_FILE_MAX_BITS		28
 #endif /* defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32) */
 
 #endif /* defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) */

arch/mips/include/asm/pgtable-64.h

@@ -291,13 +291,4 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
 #define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-/*
- * Bits 0, 4, 6, and 7 are taken. Let's leave bits 1, 2, 3, and 5 alone to
- * make things easier, and only use the upper 56 bits for the page offset...
- */
-#define PTE_FILE_MAX_BITS	56
-
-#define pte_to_pgoff(_pte)	((_pte).pte >> 8)
-#define pgoff_to_pte(off)	((pte_t) { ((off) << 8) | _PAGE_FILE })
-
 #endif /* _ASM_PGTABLE_64_H */

arch/mips/include/asm/pgtable-bits.h

@@ -48,8 +48,6 @@
 
 /*
  * The following bits are implemented in software
- *
- * _PAGE_FILE semantics: set:pagecache unset:swap
  */
 #define _PAGE_PRESENT_SHIFT	(_CACHE_SHIFT + 3)
 #define _PAGE_PRESENT		(1 << _PAGE_PRESENT_SHIFT)
@@ -64,7 +62,6 @@
 
 #define _PAGE_SILENT_READ	_PAGE_VALID
 #define _PAGE_SILENT_WRITE	_PAGE_DIRTY
-#define _PAGE_FILE		_PAGE_MODIFIED
 
 #define _PFN_SHIFT		(PAGE_SHIFT - 12 + _CACHE_SHIFT + 3)
 
@@ -72,8 +69,6 @@
 
 /*
  * The following are implemented by software
- *
- * _PAGE_FILE semantics: set:pagecache unset:swap
  */
 #define _PAGE_PRESENT_SHIFT	0
 #define _PAGE_PRESENT		(1 <<  _PAGE_PRESENT_SHIFT)
@@ -85,8 +80,6 @@
 #define _PAGE_ACCESSED		(1 <<  _PAGE_ACCESSED_SHIFT)
 #define _PAGE_MODIFIED_SHIFT	4
 #define _PAGE_MODIFIED		(1 <<  _PAGE_MODIFIED_SHIFT)
-#define _PAGE_FILE_SHIFT	4
-#define _PAGE_FILE		(1 <<  _PAGE_FILE_SHIFT)
 
 /*
  * And these are the hardware TLB bits
@@ -116,7 +109,6 @@
  * The following bits are implemented in software
  *
  * _PAGE_READ / _PAGE_READ_SHIFT should be unused if cpu_has_rixi.
- * _PAGE_FILE semantics: set:pagecache unset:swap
  */
 #define _PAGE_PRESENT_SHIFT	(0)
 #define _PAGE_PRESENT		(1 << _PAGE_PRESENT_SHIFT)
@@ -128,7 +120,6 @@
 #define _PAGE_ACCESSED		(1 << _PAGE_ACCESSED_SHIFT)
 #define _PAGE_MODIFIED_SHIFT	(_PAGE_ACCESSED_SHIFT + 1)
 #define _PAGE_MODIFIED		(1 << _PAGE_MODIFIED_SHIFT)
-#define _PAGE_FILE		(_PAGE_MODIFIED)
 
 #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 /* huge tlb page */

arch/mips/include/asm/pgtable.h

@@ -231,7 +231,6 @@ extern pgd_t swapper_pg_dir[];
 static inline int pte_write(pte_t pte)	{ return pte.pte_low & _PAGE_WRITE; }
 static inline int pte_dirty(pte_t pte)	{ return pte.pte_low & _PAGE_MODIFIED; }
 static inline int pte_young(pte_t pte)	{ return pte.pte_low & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)	{ return pte.pte_low & _PAGE_FILE; }
 
 static inline pte_t pte_wrprotect(pte_t pte)
 {
@@ -287,7 +286,6 @@ static inline pte_t pte_mkyoung(pte_t pte)
 static inline int pte_write(pte_t pte)	{ return pte_val(pte) & _PAGE_WRITE; }
 static inline int pte_dirty(pte_t pte)	{ return pte_val(pte) & _PAGE_MODIFIED; }
 static inline int pte_young(pte_t pte)	{ return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)	{ return pte_val(pte) & _PAGE_FILE; }
 
 static inline pte_t pte_wrprotect(pte_t pte)
 {

arch/mn10300/include/asm/pgtable.h

@@ -134,7 +134,6 @@ extern pte_t kernel_vmalloc_ptes[(VMALLOC_END - VMALLOC_START) / PAGE_SIZE];
 #define _PAGE_NX		0			/* no-execute bit */
 
 /* If _PAGE_VALID is clear, we use these: */
-#define _PAGE_FILE		xPTEL2_C	/* set:pagecache unset:swap */
 #define _PAGE_PROTNONE		0x000		/* If not present */
 
 #define __PAGE_PROT_UWAUX	0x010
@@ -241,11 +240,6 @@ static inline int pte_young(pte_t pte)	{ return pte_val(pte) & _PAGE_ACCESSED; }
 static inline int pte_write(pte_t pte)	{ return pte_val(pte) & __PAGE_PROT_WRITE; }
 static inline int pte_special(pte_t pte){ return 0; }
 
-/*
- * The following only works if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)	{ return pte_val(pte) & _PAGE_FILE; }
-
 static inline pte_t pte_rdprotect(pte_t pte)
 {
 	pte_val(pte) &= ~(__PAGE_PROT_USER|__PAGE_PROT_UWAUX); return pte;
@@ -338,16 +332,11 @@ static inline int pte_exec_kernel(pte_t pte)
 	return 1;
 }
 
-#define PTE_FILE_MAX_BITS	30
-
-#define pte_to_pgoff(pte)	(pte_val(pte) >> 2)
-#define pgoff_to_pte(off)	__pte((off) << 2 | _PAGE_FILE)
-
 /* Encode and de-code a swap entry */
-#define __swp_type(x)			(((x).val >> 2) & 0x3f)
-#define __swp_offset(x)			((x).val >> 8)
+#define __swp_type(x)			(((x).val >> 1) & 0x3f)
+#define __swp_offset(x)			((x).val >> 7)
 #define __swp_entry(type, offset) \
-	((swp_entry_t) { ((type) << 2) | ((offset) << 8) })
+	((swp_entry_t) { ((type) << 1) | ((offset) << 7) })
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		__pte((x).val)
 

arch/nios2/include/asm/pgtable-bits.h

@@ -30,6 +30,5 @@
 #define _PAGE_PRESENT	(1<<25)	/* PTE contains a translation */
 #define _PAGE_ACCESSED	(1<<26)	/* page referenced */
 #define _PAGE_DIRTY	(1<<27)	/* dirty page */
-#define _PAGE_FILE	(1<<28)	/* PTE used for file mapping or swap */
 
 #endif /* _ASM_NIOS2_PGTABLE_BITS_H */

arch/nios2/include/asm/pgtable.h

@@ -112,8 +112,6 @@ static inline int pte_dirty(pte_t pte)		\
 	{ return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)		\
 	{ return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)		\
-	{ return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte)	{ return 0; }
 
 #define pgprot_noncached pgprot_noncached
@@ -272,8 +270,7 @@ static inline void pte_clear(struct mm_struct *mm,
 		__FILE__, __LINE__, pgd_val(e))
 
 /*
- * Encode and decode a swap entry (must be !pte_none(pte) && !pte_present(pte)
- * && !pte_file(pte)):
+ * Encode and decode a swap entry (must be !pte_none(pte) && !pte_present(pte):
  *
  * 31 30 29 28 27 26 25 24 23 22 21 20 19 18 ...  1  0
  *  0  0  0  0 type.  0  0  0  0  0  0 offset.........
@@ -290,11 +287,6 @@ static inline void pte_clear(struct mm_struct *mm,
 #define __swp_entry_to_pte(swp)	((pte_t) { (swp).val })
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 
-/* Encode and decode a nonlinear file mapping entry */
-#define PTE_FILE_MAX_BITS	25
-#define pte_to_pgoff(pte)	(pte_val(pte) & 0x1ffffff)
-#define pgoff_to_pte(off)	__pte(((off) & 0x1ffffff) | _PAGE_FILE)
-
 #define kern_addr_valid(addr)		(1)
 
 #include <asm-generic/pgtable.h>

arch/openrisc/include/asm/pgtable.h

@@ -125,7 +125,6 @@ extern void paging_init(void);
 #define _PAGE_CC       0x001 /* software: pte contains a translation */
 #define _PAGE_CI       0x002 /* cache inhibit          */
 #define _PAGE_WBC      0x004 /* write back cache       */
-#define _PAGE_FILE     0x004 /* set: pagecache, unset: swap (when !PRESENT) */
 #define _PAGE_WOM      0x008 /* weakly ordered memory  */
 
 #define _PAGE_A        0x010 /* accessed               */
@@ -240,7 +239,6 @@ static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; }
 static inline int pte_exec(pte_t pte)  { return pte_val(pte) & _PAGE_EXEC; }
 static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)  { return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte) { return 0; }
 static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 
@@ -438,12 +436,6 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-/* Encode and decode a nonlinear file mapping entry */
-
-#define PTE_FILE_MAX_BITS               26
-#define pte_to_pgoff(x)	                (pte_val(x) >> 6)
-#define pgoff_to_pte(x)	                __pte(((x) << 6) | _PAGE_FILE)
-
 #define kern_addr_valid(addr)           (1)
 
 #include <asm-generic/pgtable.h>

arch/openrisc/kernel/head.S

@@ -754,11 +754,6 @@ _dc_enable:
 
 /* ===============================================[ page table masks ]=== */
 
-/* bit 4 is used in hardware as write back cache bit. we never use this bit
- * explicitly, so we can reuse it as _PAGE_FILE bit and mask it out when
- * writing into hardware pte's
- */
-
 #define DTLB_UP_CONVERT_MASK  0x3fa
 #define ITLB_UP_CONVERT_MASK  0x3a
 

arch/parisc/include/asm/pgtable.h

@@ -146,7 +146,6 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
 #define _PAGE_GATEWAY_BIT  28   /* (0x008) privilege promotion allowed */
 #define _PAGE_DMB_BIT      27   /* (0x010) Data Memory Break enable (B bit) */
 #define _PAGE_DIRTY_BIT    26   /* (0x020) Page Dirty (D bit) */
-#define _PAGE_FILE_BIT	_PAGE_DIRTY_BIT	/* overload this bit */
 #define _PAGE_REFTRAP_BIT  25   /* (0x040) Page Ref. Trap enable (T bit) */
 #define _PAGE_NO_CACHE_BIT 24   /* (0x080) Uncached Page (U bit) */
 #define _PAGE_ACCESSED_BIT 23   /* (0x100) Software: Page Accessed */
@@ -167,13 +166,6 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
 /* PFN_PTE_SHIFT defines the shift of a PTE value to access the PFN field */
 #define PFN_PTE_SHIFT		12
 
-
-/* this is how many bits may be used by the file functions */
-#define PTE_FILE_MAX_BITS	(BITS_PER_LONG - PTE_SHIFT)
-
-#define pte_to_pgoff(pte) (pte_val(pte) >> PTE_SHIFT)
-#define pgoff_to_pte(off) ((pte_t) { ((off) << PTE_SHIFT) | _PAGE_FILE })
-
 #define _PAGE_READ     (1 << xlate_pabit(_PAGE_READ_BIT))
 #define _PAGE_WRITE    (1 << xlate_pabit(_PAGE_WRITE_BIT))
 #define _PAGE_RW       (_PAGE_READ | _PAGE_WRITE)
@@ -186,7 +178,6 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
 #define _PAGE_ACCESSED (1 << xlate_pabit(_PAGE_ACCESSED_BIT))
 #define _PAGE_PRESENT  (1 << xlate_pabit(_PAGE_PRESENT_BIT))
 #define _PAGE_USER     (1 << xlate_pabit(_PAGE_USER_BIT))
-#define _PAGE_FILE     (1 << xlate_pabit(_PAGE_FILE_BIT))
 
 #define _PAGE_TABLE	(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE |  _PAGE_DIRTY | _PAGE_ACCESSED)
 #define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
@@ -344,7 +335,6 @@ static inline void pgd_clear(pgd_t * pgdp)	{ }
 static inline int pte_dirty(pte_t pte)		{ return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)		{ return pte_val(pte) & _PAGE_ACCESSED; }
 static inline int pte_write(pte_t pte)		{ return pte_val(pte) & _PAGE_WRITE; }
-static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte)	{ return 0; }
 
 static inline pte_t pte_mkclean(pte_t pte)	{ pte_val(pte) &= ~_PAGE_DIRTY; return pte; }

arch/s390/include/asm/pgtable.h

@@ -249,10 +249,10 @@ static inline int is_module_addr(void *addr)
 				 _PAGE_YOUNG)
 
 /*
- * handle_pte_fault uses pte_present, pte_none and pte_file to find out the
- * pte type WITHOUT holding the page table lock. The _PAGE_PRESENT bit
- * is used to distinguish present from not-present ptes. It is changed only
- * with the page table lock held.
+ * handle_pte_fault uses pte_present and pte_none to find out the pte type
+ * WITHOUT holding the page table lock. The _PAGE_PRESENT bit is used to
+ * distinguish present from not-present ptes. It is changed only with the page
+ * table lock held.
  *
  * The following table gives the different possible bit combinations for
  * the pte hardware and software bits in the last 12 bits of a pte:
@@ -279,7 +279,6 @@ static inline int is_module_addr(void *addr)
  *
  * pte_present is true for the bit pattern .xx...xxxxx1, (pte & 0x001) == 0x001
  * pte_none    is true for the bit pattern .10...xxxx00, (pte & 0x603) == 0x400
- * pte_file    is true for the bit pattern .11...xxxxx0, (pte & 0x601) == 0x600
  * pte_swap    is true for the bit pattern .10...xxxx10, (pte & 0x603) == 0x402
  */
 
@@ -671,13 +670,6 @@ static inline int pte_swap(pte_t pte)
 		== (_PAGE_INVALID | _PAGE_TYPE);
 }
 
-static inline int pte_file(pte_t pte)
-{
-	/* Bit pattern: (pte & 0x601) == 0x600 */
-	return (pte_val(pte) & (_PAGE_INVALID | _PAGE_PROTECT | _PAGE_PRESENT))
-		== (_PAGE_INVALID | _PAGE_PROTECT);
-}
-
 static inline int pte_special(pte_t pte)
 {
 	return (pte_val(pte) & _PAGE_SPECIAL);
@@ -1756,19 +1748,6 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-#ifndef CONFIG_64BIT
-# define PTE_FILE_MAX_BITS	26
-#else /* CONFIG_64BIT */
-# define PTE_FILE_MAX_BITS	59
-#endif /* CONFIG_64BIT */
-
-#define pte_to_pgoff(__pte) \
-	((((__pte).pte >> 12) << 7) + (((__pte).pte >> 1) & 0x7f))
-
-#define pgoff_to_pte(__off) \
-	((pte_t) { ((((__off) & 0x7f) << 1) + (((__off) >> 7) << 12)) \
-		   | _PAGE_INVALID | _PAGE_PROTECT })
-
 #endif /* !__ASSEMBLY__ */
 
 #define kern_addr_valid(addr)   (1)

arch/score/include/asm/pgtable-bits.h

@@ -6,7 +6,6 @@
 #define _PAGE_WRITE			(1<<7)	/* implemented in software */
 #define _PAGE_PRESENT			(1<<9)	/* implemented in software */
 #define _PAGE_MODIFIED			(1<<10)	/* implemented in software */
-#define _PAGE_FILE			(1<<10)
 
 #define _PAGE_GLOBAL			(1<<0)
 #define _PAGE_VALID			(1<<1)

arch/score/include/asm/pgtable.h

@@ -90,15 +90,6 @@ static inline void pmd_clear(pmd_t *pmdp)
 	((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
 #define pte_unmap(pte) ((void)(pte))
 
-/*
- * Bits 9(_PAGE_PRESENT) and 10(_PAGE_FILE)are taken,
- * split up 30 bits of offset into this range:
- */
-#define PTE_FILE_MAX_BITS	30
-#define pte_to_pgoff(_pte)		\
-	(((_pte).pte & 0x1ff) | (((_pte).pte >> 11) << 9))
-#define pgoff_to_pte(off)		\
-	((pte_t) {((off) & 0x1ff) | (((off) >> 9) << 11) | _PAGE_FILE})
 #define __pte_to_swp_entry(pte)		\
 	((swp_entry_t) { pte_val(pte)})
 #define __swp_entry_to_pte(x)	((pte_t) {(x).val})
@@ -169,8 +160,8 @@ static inline pgprot_t pgprot_noncached(pgprot_t _prot)
 }
 
 #define __swp_type(x)		((x).val & 0x1f)
-#define __swp_offset(x) 	((x).val >> 11)
-#define __swp_entry(type, offset) ((swp_entry_t){(type) | ((offset) << 11)})
+#define __swp_offset(x) 	((x).val >> 10)
+#define __swp_entry(type, offset) ((swp_entry_t){(type) | ((offset) << 10)})
 
 extern unsigned long empty_zero_page;
 extern unsigned long zero_page_mask;
@@ -198,11 +189,6 @@ static inline int pte_young(pte_t pte)
 	return pte_val(pte) & _PAGE_ACCESSED;
 }
 
-static inline int pte_file(pte_t pte)
-{
-	return pte_val(pte) & _PAGE_FILE;
-}
-
 #define pte_special(pte)	(0)
 
 static inline pte_t pte_wrprotect(pte_t pte)

arch/sh/Kconfig

@@ -1,7 +1,7 @@
 config SUPERH
 	def_bool y
 	select ARCH_MIGHT_HAVE_PC_PARPORT
-	select EXPERT
+	select HAVE_PATA_PLATFORM
 	select CLKDEV_LOOKUP
 	select HAVE_IDE if HAS_IOPORT_MAP
 	select HAVE_MEMBLOCK

arch/sh/boards/mach-se/7343/irq.c

@@ -14,9 +14,6 @@
 #define DRV_NAME "SE7343-FPGA"
 #define pr_fmt(fmt) DRV_NAME ": " fmt
 
-#define irq_reg_readl	ioread16
-#define irq_reg_writel	iowrite16
-
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>

arch/sh/boards/mach-se/7722/irq.c

@@ -11,9 +11,6 @@
 #define DRV_NAME "SE7722-FPGA"
 #define pr_fmt(fmt) DRV_NAME ": " fmt
 
-#define irq_reg_readl	ioread16
-#define irq_reg_writel	iowrite16
-
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>

arch/sh/include/asm/pgtable_32.h

@@ -26,8 +26,6 @@
  *   and timing control which (together with bit 0) are moved into the
  *   old-style PTEA on the parts that support it.
  *
- * XXX: Leave the _PAGE_FILE and _PAGE_WT overhaul for a rainy day.
- *
  * SH-X2 MMUs and extended PTEs
  *
  * SH-X2 supports an extended mode TLB with split data arrays due to the
@@ -51,7 +49,6 @@
 #define _PAGE_PRESENT	0x100		/* V-bit   : page is valid */
 #define _PAGE_PROTNONE	0x200		/* software: if not present  */
 #define _PAGE_ACCESSED	0x400		/* software: page referenced */
-#define _PAGE_FILE	_PAGE_WT	/* software: pagecache or swap? */
 #define _PAGE_SPECIAL	0x800		/* software: special page */
 
 #define _PAGE_SZ_MASK	(_PAGE_SZ0 | _PAGE_SZ1)
@@ -105,14 +102,13 @@ static inline unsigned long copy_ptea_attributes(unsigned long x)
 /* Mask which drops unused bits from the PTEL value */
 #if defined(CONFIG_CPU_SH3)
 #define _PAGE_CLEAR_FLAGS	(_PAGE_PROTNONE | _PAGE_ACCESSED| \
-				 _PAGE_FILE	| _PAGE_SZ1	| \
-				 _PAGE_HW_SHARED)
+				  _PAGE_SZ1	| _PAGE_HW_SHARED)
 #elif defined(CONFIG_X2TLB)
 /* Get rid of the legacy PR/SZ bits when using extended mode */
 #define _PAGE_CLEAR_FLAGS	(_PAGE_PROTNONE | _PAGE_ACCESSED | \
-				 _PAGE_FILE | _PAGE_PR_MASK | _PAGE_SZ_MASK)
+				 _PAGE_PR_MASK | _PAGE_SZ_MASK)
 #else
-#define _PAGE_CLEAR_FLAGS	(_PAGE_PROTNONE | _PAGE_ACCESSED | _PAGE_FILE)
+#define _PAGE_CLEAR_FLAGS	(_PAGE_PROTNONE | _PAGE_ACCESSED)
 #endif
 
 #define _PAGE_FLAGS_HARDWARE_MASK	(phys_addr_mask() & ~(_PAGE_CLEAR_FLAGS))
@@ -343,7 +339,6 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
 #define pte_not_present(pte)	(!((pte).pte_low & _PAGE_PRESENT))
 #define pte_dirty(pte)		((pte).pte_low & _PAGE_DIRTY)
 #define pte_young(pte)		((pte).pte_low & _PAGE_ACCESSED)
-#define pte_file(pte)		((pte).pte_low & _PAGE_FILE)
 #define pte_special(pte)	((pte).pte_low & _PAGE_SPECIAL)
 
 #ifdef CONFIG_X2TLB
@@ -445,7 +440,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  * Encode and de-code a swap entry
  *
  * Constraints:
- *	_PAGE_FILE at bit 0
  *	_PAGE_PRESENT at bit 8
  *	_PAGE_PROTNONE at bit 9
  *
@@ -453,9 +447,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  * swap offset into bits 10:30. For the 64-bit PTE case, we keep the
  * preserved bits in the low 32-bits and use the upper 32 as the swap
  * offset (along with a 5-bit type), following the same approach as x86
- * PAE. This keeps the logic quite simple, and allows for a full 32
- * PTE_FILE_MAX_BITS, as opposed to the 29-bits we're constrained with
- * in the pte_low case.
+ * PAE. This keeps the logic quite simple.
  *
  * As is evident by the Alpha code, if we ever get a 64-bit unsigned
  * long (swp_entry_t) to match up with the 64-bit PTEs, this all becomes
@@ -471,13 +463,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 #define __pte_to_swp_entry(pte)		((swp_entry_t){ (pte).pte_high })
 #define __swp_entry_to_pte(x)		((pte_t){ 0, (x).val })
 
-/*
- * Encode and decode a nonlinear file mapping entry
- */
-#define pte_to_pgoff(pte)		((pte).pte_high)
-#define pgoff_to_pte(off)		((pte_t) { _PAGE_FILE, (off) })
-
-#define PTE_FILE_MAX_BITS		32
 #else
 #define __swp_type(x)			((x).val & 0xff)
 #define __swp_offset(x)			((x).val >> 10)
@@ -485,13 +470,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) >> 1 })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val << 1 })
-
-/*
- * Encode and decode a nonlinear file mapping entry
- */
-#define PTE_FILE_MAX_BITS	29
-#define pte_to_pgoff(pte)	(pte_val(pte) >> 1)
-#define pgoff_to_pte(off)	((pte_t) { ((off) << 1) | _PAGE_FILE })
 #endif
 
 #endif /* __ASSEMBLY__ */

arch/sh/include/asm/pgtable_64.h

@@ -107,7 +107,6 @@ static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
 #define _PAGE_DEVICE	0x001  /* CB0: if uncacheable, 1->device (i.e. no write-combining or reordering at bus level) */
 #define _PAGE_CACHABLE	0x002  /* CB1: uncachable/cachable */
 #define _PAGE_PRESENT	0x004  /* software: page referenced */
-#define _PAGE_FILE	0x004  /* software: only when !present */
 #define _PAGE_SIZE0	0x008  /* SZ0-bit : size of page */
 #define _PAGE_SIZE1	0x010  /* SZ1-bit : size of page */
 #define _PAGE_SHARED	0x020  /* software: reflects PTEH's SH */
@@ -129,7 +128,7 @@ static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
 #define _PAGE_WIRED	_PAGE_EXT(0x001) /* software: wire the tlb entry */
 #define _PAGE_SPECIAL	_PAGE_EXT(0x002)
 
-#define _PAGE_CLEAR_FLAGS	(_PAGE_PRESENT | _PAGE_FILE | _PAGE_SHARED | \
+#define _PAGE_CLEAR_FLAGS	(_PAGE_PRESENT | _PAGE_SHARED | \
 				 _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_WIRED)
 
 /* Mask which drops software flags */
@@ -260,7 +259,6 @@ static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
  */
 static inline int pte_dirty(pte_t pte)  { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)  { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)   { return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_write(pte_t pte)  { return pte_val(pte) & _PAGE_WRITE; }
 static inline int pte_special(pte_t pte){ return pte_val(pte) & _PAGE_SPECIAL; }
 
@@ -304,11 +302,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-/* Encode and decode a nonlinear file mapping entry */
-#define PTE_FILE_MAX_BITS		29
-#define pte_to_pgoff(pte)		(pte_val(pte))
-#define pgoff_to_pte(off)		((pte_t) { (off) | _PAGE_FILE })
-
 #endif /* !__ASSEMBLY__ */
 
 #define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))

arch/sparc/include/asm/pgtable_32.h

@@ -221,14 +221,6 @@ static inline int pte_young(pte_t pte)
 	return pte_val(pte) & SRMMU_REF;
 }
 
-/*
- * The following only work if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)
-{
-	return pte_val(pte) & SRMMU_FILE;
-}
-
 static inline int pte_special(pte_t pte)
 {
 	return 0;
@@ -375,22 +367,6 @@ static inline swp_entry_t __swp_entry(unsigned long type, unsigned long offset)
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-/* file-offset-in-pte helpers */
-static inline unsigned long pte_to_pgoff(pte_t pte)
-{
-	return pte_val(pte) >> SRMMU_PTE_FILE_SHIFT;
-}
-
-static inline pte_t pgoff_to_pte(unsigned long pgoff)
-{
-	return __pte((pgoff << SRMMU_PTE_FILE_SHIFT) | SRMMU_FILE);
-}
-
-/*
- * This is made a constant because mm/fremap.c required a constant.
- */
-#define PTE_FILE_MAX_BITS 24
-
 static inline unsigned long
 __get_phys (unsigned long addr)
 {

arch/sparc/include/asm/pgtable_64.h

@@ -137,7 +137,6 @@ bool kern_addr_valid(unsigned long addr);
 #define _PAGE_SOFT_4U	  _AC(0x0000000000001F80,UL) /* Software bits:       */
 #define _PAGE_EXEC_4U	  _AC(0x0000000000001000,UL) /* Executable SW bit    */
 #define _PAGE_MODIFIED_4U _AC(0x0000000000000800,UL) /* Modified (dirty)     */
-#define _PAGE_FILE_4U	  _AC(0x0000000000000800,UL) /* Pagecache page       */
 #define _PAGE_ACCESSED_4U _AC(0x0000000000000400,UL) /* Accessed (ref'd)     */
 #define _PAGE_READ_4U	  _AC(0x0000000000000200,UL) /* Readable SW Bit      */
 #define _PAGE_WRITE_4U	  _AC(0x0000000000000100,UL) /* Writable SW Bit      */
@@ -167,7 +166,6 @@ bool kern_addr_valid(unsigned long addr);
 #define _PAGE_EXEC_4V	  _AC(0x0000000000000080,UL) /* Executable Page      */
 #define _PAGE_W_4V	  _AC(0x0000000000000040,UL) /* Writable             */
 #define _PAGE_SOFT_4V	  _AC(0x0000000000000030,UL) /* Software bits        */
-#define _PAGE_FILE_4V	  _AC(0x0000000000000020,UL) /* Pagecache page       */
 #define _PAGE_PRESENT_4V  _AC(0x0000000000000010,UL) /* Present              */
 #define _PAGE_RESV_4V	  _AC(0x0000000000000008,UL) /* Reserved             */
 #define _PAGE_SZ16GB_4V	  _AC(0x0000000000000007,UL) /* 16GB Page            */
@@ -332,22 +330,6 @@ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
 }
 #endif
 
-static inline pte_t pgoff_to_pte(unsigned long off)
-{
-	off <<= PAGE_SHIFT;
-
-	__asm__ __volatile__(
-	"\n661:	or		%0, %2, %0\n"
-	"	.section	.sun4v_1insn_patch, \"ax\"\n"
-	"	.word		661b\n"
-	"	or		%0, %3, %0\n"
-	"	.previous\n"
-	: "=r" (off)
-	: "0" (off), "i" (_PAGE_FILE_4U), "i" (_PAGE_FILE_4V));
-
-	return __pte(off);
-}
-
 static inline pgprot_t pgprot_noncached(pgprot_t prot)
 {
 	unsigned long val = pgprot_val(prot);
@@ -609,22 +591,6 @@ static inline unsigned long pte_exec(pte_t pte)
 	return (pte_val(pte) & mask);
 }
 
-static inline unsigned long pte_file(pte_t pte)
-{
-	unsigned long val = pte_val(pte);
-
-	__asm__ __volatile__(
-	"\n661:	and		%0, %2, %0\n"
-	"	.section	.sun4v_1insn_patch, \"ax\"\n"
-	"	.word		661b\n"
-	"	and		%0, %3, %0\n"
-	"	.previous\n"
-	: "=r" (val)
-	: "0" (val), "i" (_PAGE_FILE_4U), "i" (_PAGE_FILE_4V));
-
-	return val;
-}
-
 static inline unsigned long pte_present(pte_t pte)
 {
 	unsigned long val = pte_val(pte);
@@ -971,12 +937,6 @@ pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp);
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)		((pte_t) { (x).val })
 
-/* File offset in PTE support. */
-unsigned long pte_file(pte_t);
-#define pte_to_pgoff(pte)	(pte_val(pte) >> PAGE_SHIFT)
-pte_t pgoff_to_pte(unsigned long);
-#define PTE_FILE_MAX_BITS	(64UL - PAGE_SHIFT - 1UL)
-
 int page_in_phys_avail(unsigned long paddr);
 
 /*

arch/sparc/include/asm/pgtsrmmu.h

@@ -80,10 +80,6 @@
 #define SRMMU_PRIV         0x1c
 #define SRMMU_PRIV_RDONLY  0x18
 
-#define SRMMU_FILE         0x40	/* Implemented in software */
-
-#define SRMMU_PTE_FILE_SHIFT     8	/* == 32-PTE_FILE_MAX_BITS */
-
 #define SRMMU_CHG_MASK    (0xffffff00 | SRMMU_REF | SRMMU_DIRTY)
 
 /* SRMMU swap entry encoding
@@ -94,13 +90,13 @@
  * oooooooooooooooooootttttRRRRRRRR
  * fedcba9876543210fedcba9876543210
  *
- * The bottom 8 bits are reserved for protection and status bits, especially
- * FILE and PRESENT.
+ * The bottom 7 bits are reserved for protection and status bits, especially
+ * PRESENT.
  */
 #define SRMMU_SWP_TYPE_MASK	0x1f
-#define SRMMU_SWP_TYPE_SHIFT	SRMMU_PTE_FILE_SHIFT
-#define SRMMU_SWP_OFF_MASK	0x7ffff
-#define SRMMU_SWP_OFF_SHIFT	(SRMMU_PTE_FILE_SHIFT + 5)
+#define SRMMU_SWP_TYPE_SHIFT	7
+#define SRMMU_SWP_OFF_MASK	0xfffff
+#define SRMMU_SWP_OFF_SHIFT	(SRMMU_SWP_TYPE_SHIFT + 5)
 
 /* Some day I will implement true fine grained access bits for
  * user pages because the SRMMU gives us the capabilities to

arch/tile/include/asm/pgtable.h

@@ -284,17 +284,6 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
 extern void start_mm_caching(struct mm_struct *mm);
 extern void check_mm_caching(struct mm_struct *prev, struct mm_struct *next);
 
-/*
- * Support non-linear file mappings (see sys_remap_file_pages).
- * This is defined by CLIENT1 set but CLIENT0 and _PAGE_PRESENT clear, and the
- * file offset in the 32 high bits.
- */
-#define _PAGE_FILE        HV_PTE_CLIENT1
-#define PTE_FILE_MAX_BITS 32
-#define pte_file(pte)     (hv_pte_get_client1(pte) && !hv_pte_get_client0(pte))
-#define pte_to_pgoff(pte) ((pte).val >> 32)
-#define pgoff_to_pte(off) ((pte_t) { (((long long)(off)) << 32) | _PAGE_FILE })
-
 /*
  * Encode and de-code a swap entry (see <linux/swapops.h>).
  * We put the swap file type+offset in the 32 high bits;

arch/tile/mm/homecache.c

@@ -263,10 +263,6 @@ static int pte_to_home(pte_t pte)
 /* Update the home of a PTE if necessary (can also be used for a pgprot_t). */
 pte_t pte_set_home(pte_t pte, int home)
 {
-	/* Check for non-linear file mapping "PTEs" and pass them through. */
-	if (pte_file(pte))
-		return pte;
-
 #if CHIP_HAS_MMIO()
 	/* Check for MMIO mappings and pass them through. */
 	if (hv_pte_get_mode(pte) == HV_PTE_MODE_MMIO)

arch/um/include/asm/pgtable-2level.h

@@ -41,13 +41,4 @@ static inline void pgd_mkuptodate(pgd_t pgd)	{ }
 #define pfn_pte(pfn, prot) __pte(pfn_to_phys(pfn) | pgprot_val(prot))
 #define pfn_pmd(pfn, prot) __pmd(pfn_to_phys(pfn) | pgprot_val(prot))
 
-/*
- * Bits 0 through 4 are taken
- */
-#define PTE_FILE_MAX_BITS	27
-
-#define pte_to_pgoff(pte) (pte_val(pte) >> 5)
-
-#define pgoff_to_pte(off) ((pte_t) { ((off) << 5) + _PAGE_FILE })
-
 #endif

arch/um/include/asm/pgtable-3level.h

@@ -112,25 +112,5 @@ static inline pmd_t pfn_pmd(pfn_t page_nr, pgprot_t pgprot)
 	return __pmd((page_nr << PAGE_SHIFT) | pgprot_val(pgprot));
 }
 
-/*
- * Bits 0 through 3 are taken in the low part of the pte,
- * put the 32 bits of offset into the high part.
- */
-#define PTE_FILE_MAX_BITS	32
-
-#ifdef CONFIG_64BIT
-
-#define pte_to_pgoff(p) ((p).pte >> 32)
-
-#define pgoff_to_pte(off) ((pte_t) { ((off) << 32) | _PAGE_FILE })
-
-#else
-
-#define pte_to_pgoff(pte) ((pte).pte_high)
-
-#define pgoff_to_pte(off) ((pte_t) { _PAGE_FILE, (off) })
-
-#endif
-
 #endif
 

arch/um/include/asm/pgtable.h

@@ -18,7 +18,6 @@
 #define _PAGE_ACCESSED	0x080
 #define _PAGE_DIRTY	0x100
 /* If _PAGE_PRESENT is clear, we use these: */
-#define _PAGE_FILE	0x008	/* nonlinear file mapping, saved PTE; unset:swap */
 #define _PAGE_PROTNONE	0x010	/* if the user mapped it with PROT_NONE;
 				   pte_present gives true */
 
@@ -151,14 +150,6 @@ static inline int pte_write(pte_t pte)
 	       !(pte_get_bits(pte, _PAGE_PROTNONE)));
 }
 
-/*
- * The following only works if pte_present() is not true.
- */
-static inline int pte_file(pte_t pte)
-{
-	return pte_get_bits(pte, _PAGE_FILE);
-}
-
 static inline int pte_dirty(pte_t pte)
 {
 	return pte_get_bits(pte, _PAGE_DIRTY);

arch/unicore32/include/asm/pgtable-hwdef.h

@@ -44,7 +44,6 @@
 #define PTE_TYPE_INVALID	(3 << 0)
 
 #define PTE_PRESENT		(1 << 2)
-#define PTE_FILE		(1 << 3)	/* only when !PRESENT */
 #define PTE_YOUNG		(1 << 3)
 #define PTE_DIRTY		(1 << 4)
 #define PTE_CACHEABLE		(1 << 5)

arch/unicore32/include/asm/pgtable.h

@@ -283,20 +283,6 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
 #define MAX_SWAPFILES_CHECK()	\
 	BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > __SWP_TYPE_BITS)
 
-/*
- * Encode and decode a file entry.  File entries are stored in the Linux
- * page tables as follows:
- *
- *   3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
- *   1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
- *   <----------------------- offset ----------------------> 1 0 0 0
- */
-#define pte_file(pte)		(pte_val(pte) & PTE_FILE)
-#define pte_to_pgoff(x)		(pte_val(x) >> 4)
-#define pgoff_to_pte(x)		__pte(((x) << 4) | PTE_FILE)
-
-#define PTE_FILE_MAX_BITS	28
-
 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
 /* FIXME: this is not correct */
 #define kern_addr_valid(addr)	(1)

arch/x86/include/asm/pgtable-2level.h

@@ -62,44 +62,8 @@ static inline unsigned long pte_bitop(unsigned long value, unsigned int rightshi
 	return ((value >> rightshift) & mask) << leftshift;
 }
 
-/*
- * Bits _PAGE_BIT_PRESENT, _PAGE_BIT_FILE and _PAGE_BIT_PROTNONE are taken,
- * split up the 29 bits of offset into this range.
- */
-#define PTE_FILE_MAX_BITS	29
-#define PTE_FILE_SHIFT1		(_PAGE_BIT_PRESENT + 1)
-#define PTE_FILE_SHIFT2		(_PAGE_BIT_FILE + 1)
-#define PTE_FILE_SHIFT3		(_PAGE_BIT_PROTNONE + 1)
-#define PTE_FILE_BITS1		(PTE_FILE_SHIFT2 - PTE_FILE_SHIFT1 - 1)
-#define PTE_FILE_BITS2		(PTE_FILE_SHIFT3 - PTE_FILE_SHIFT2 - 1)
-
-#define PTE_FILE_MASK1		((1U << PTE_FILE_BITS1) - 1)
-#define PTE_FILE_MASK2		((1U << PTE_FILE_BITS2) - 1)
-
-#define PTE_FILE_LSHIFT2	(PTE_FILE_BITS1)
-#define PTE_FILE_LSHIFT3	(PTE_FILE_BITS1 + PTE_FILE_BITS2)
-
-static __always_inline pgoff_t pte_to_pgoff(pte_t pte)
-{
-	return (pgoff_t)
-		(pte_bitop(pte.pte_low, PTE_FILE_SHIFT1, PTE_FILE_MASK1,  0)		    +
-		 pte_bitop(pte.pte_low, PTE_FILE_SHIFT2, PTE_FILE_MASK2,  PTE_FILE_LSHIFT2) +
-		 pte_bitop(pte.pte_low, PTE_FILE_SHIFT3,           -1UL,  PTE_FILE_LSHIFT3));
-}
-
-static __always_inline pte_t pgoff_to_pte(pgoff_t off)
-{
-	return (pte_t){
-		.pte_low =
-			pte_bitop(off,                0, PTE_FILE_MASK1,  PTE_FILE_SHIFT1) +
-			pte_bitop(off, PTE_FILE_LSHIFT2, PTE_FILE_MASK2,  PTE_FILE_SHIFT2) +
-			pte_bitop(off, PTE_FILE_LSHIFT3,           -1UL,  PTE_FILE_SHIFT3) +
-			_PAGE_FILE,
-	};
-}
-
 /* Encode and de-code a swap entry */
-#define SWP_TYPE_BITS (_PAGE_BIT_FILE - _PAGE_BIT_PRESENT - 1)
+#define SWP_TYPE_BITS 5
 #define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 1)
 
 #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS)

arch/x86/include/asm/pgtable-3level.h

@@ -176,18 +176,6 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *pmdp)
 #define native_pmdp_get_and_clear(xp) native_local_pmdp_get_and_clear(xp)
 #endif
 
-/*
- * Bits 0, 6 and 7 are taken in the low part of the pte,
- * put the 32 bits of offset into the high part.
- *
- * For soft-dirty tracking 11 bit is taken from
- * the low part of pte as well.
- */
-#define pte_to_pgoff(pte) ((pte).pte_high)
-#define pgoff_to_pte(off)						\
-	((pte_t) { { .pte_low = _PAGE_FILE, .pte_high = (off) } })
-#define PTE_FILE_MAX_BITS       32
-
 /* Encode and de-code a swap entry */
 #define MAX_SWAPFILES_CHECK() BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > 5)
 #define __swp_type(x)			(((x).val) & 0x1f)

arch/x86/include/asm/pgtable.h

@@ -115,11 +115,6 @@ static inline int pte_write(pte_t pte)
 	return pte_flags(pte) & _PAGE_RW;
 }
 
-static inline int pte_file(pte_t pte)
-{
-	return pte_flags(pte) & _PAGE_FILE;
-}
-
 static inline int pte_huge(pte_t pte)
 {
 	return pte_flags(pte) & _PAGE_PSE;
@@ -329,21 +324,6 @@ static inline pmd_t pmd_mksoft_dirty(pmd_t pmd)
 	return pmd_set_flags(pmd, _PAGE_SOFT_DIRTY);
 }
 
-static inline pte_t pte_file_clear_soft_dirty(pte_t pte)
-{
-	return pte_clear_flags(pte, _PAGE_SOFT_DIRTY);
-}
-
-static inline pte_t pte_file_mksoft_dirty(pte_t pte)
-{
-	return pte_set_flags(pte, _PAGE_SOFT_DIRTY);
-}
-
-static inline int pte_file_soft_dirty(pte_t pte)
-{
-	return pte_flags(pte) & _PAGE_SOFT_DIRTY;
-}
-
 #endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */
 
 /*

arch/x86/include/asm/pgtable_64.h

@@ -133,10 +133,6 @@ static inline int pgd_large(pgd_t pgd) { return 0; }
 /* PUD - Level3 access */
 
 /* PMD  - Level 2 access */
-#define pte_to_pgoff(pte) ((pte_val((pte)) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
-#define pgoff_to_pte(off) ((pte_t) { .pte = ((off) << PAGE_SHIFT) |	\
-					    _PAGE_FILE })
-#define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT
 
 /* PTE - Level 1 access. */
 
@@ -145,7 +141,7 @@ static inline int pgd_large(pgd_t pgd) { return 0; }
 #define pte_unmap(pte) ((void)(pte))/* NOP */
 
 /* Encode and de-code a swap entry */
-#define SWP_TYPE_BITS (_PAGE_BIT_FILE - _PAGE_BIT_PRESENT - 1)
+#define SWP_TYPE_BITS 5
 #ifdef CONFIG_NUMA_BALANCING
 /* Automatic NUMA balancing needs to be distinguishable from swap entries */
 #define SWP_OFFSET_SHIFT (_PAGE_BIT_PROTNONE + 2)

arch/x86/include/asm/pgtable_types.h

@@ -38,8 +38,6 @@
 /* If _PAGE_BIT_PRESENT is clear, we use these: */
 /* - if the user mapped it with PROT_NONE; pte_present gives true */
 #define _PAGE_BIT_PROTNONE	_PAGE_BIT_GLOBAL
-/* - set: nonlinear file mapping, saved PTE; unset:swap */
-#define _PAGE_BIT_FILE		_PAGE_BIT_DIRTY
 
 #define _PAGE_PRESENT	(_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
 #define _PAGE_RW	(_AT(pteval_t, 1) << _PAGE_BIT_RW)
@@ -114,7 +112,6 @@
 #define _PAGE_NX	(_AT(pteval_t, 0))
 #endif
 
-#define _PAGE_FILE	(_AT(pteval_t, 1) << _PAGE_BIT_FILE)
 #define _PAGE_PROTNONE	(_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
 
 #define _PAGE_TABLE	(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |	\

arch/x86/mm/hugetlbpage.c

@@ -178,4 +178,15 @@ static __init int setup_hugepagesz(char *opt)
 	return 1;
 }
 __setup("hugepagesz=", setup_hugepagesz);
+
+#ifdef CONFIG_CMA
+static __init int gigantic_pages_init(void)
+{
+	/* With CMA we can allocate gigantic pages at runtime */
+	if (cpu_has_gbpages && !size_to_hstate(1UL << PUD_SHIFT))
+		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
+	return 0;
+}
+arch_initcall(gigantic_pages_init);
+#endif
 #endif

arch/xtensa/include/asm/pgtable.h

@@ -89,8 +89,6 @@
  *   (PAGE_NONE)|    PPN    | 0 | 00 | ADW | 01 | 11 | 11 |
  *		+-----------------------------------------+
  *   swap	|     index     |   type   | 01 | 11 | 00 |
- *		+- - - - - - - - - - - - - - - - - - - - -+
- *   file	|        file offset       | 01 | 11 | 10 |
  *		+-----------------------------------------+
  *
  * For T1050 hardware and earlier the layout differs for present and (PAGE_NONE)
@@ -111,7 +109,6 @@
  *   index      swap offset / PAGE_SIZE (bit 11-31: 21 bits -> 8 GB)
  *		(note that the index is always non-zero)
  *   type       swap type (5 bits -> 32 types)
- *   file offset 26-bit offset into the file, in increments of PAGE_SIZE
  *
  *  Notes:
  *   - (PROT_NONE) is a special case of 'present' but causes an exception for
@@ -144,7 +141,6 @@
 #define _PAGE_HW_VALID		0x00
 #define _PAGE_NONE		0x0f
 #endif
-#define _PAGE_FILE		(1<<1)	/* file mapped page, only if !present */
 
 #define _PAGE_USER		(1<<4)	/* user access (ring=1) */
 
@@ -260,7 +256,6 @@ static inline void pgtable_cache_init(void) { }
 static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
 static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_file(pte_t pte)  { return pte_val(pte) & _PAGE_FILE; }
 static inline int pte_special(pte_t pte) { return 0; }
 
 static inline pte_t pte_wrprotect(pte_t pte)	
@@ -390,11 +385,6 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val })
 
-#define PTE_FILE_MAX_BITS	26
-#define pte_to_pgoff(pte)	(pte_val(pte) >> 6)
-#define pgoff_to_pte(off)	\
-	((pte_t) { ((off) << 6) | _PAGE_CA_INVALID | _PAGE_FILE | _PAGE_USER })
-
 #endif /*  !defined (__ASSEMBLY__) */
 
 

drivers/gpu/drm/drm_vma_manager.c

@@ -50,8 +50,7 @@
  *
  * You must not use multiple offset managers on a single address_space.
  * Otherwise, mm-core will be unable to tear down memory mappings as the VM will
- * no longer be linear. Please use VM_NONLINEAR in that case and implement your
- * own offset managers.
+ * no longer be linear.
  *
  * This offset manager works on page-based addresses. That is, every argument
  * and return code (with the exception of drm_vma_node_offset_addr()) is given

fs/9p/vfs_file.c

@@ -831,7 +831,6 @@ static const struct vm_operations_struct v9fs_file_vm_ops = {
 	.fault = filemap_fault,
 	.map_pages = filemap_map_pages,
 	.page_mkwrite = v9fs_vm_page_mkwrite,
-	.remap_pages = generic_file_remap_pages,
 };
 
 static const struct vm_operations_struct v9fs_mmap_file_vm_ops = {
@@ -839,7 +838,6 @@ static const struct vm_operations_struct v9fs_mmap_file_vm_ops = {
 	.fault = filemap_fault,
 	.map_pages = filemap_map_pages,
 	.page_mkwrite = v9fs_vm_page_mkwrite,
-	.remap_pages = generic_file_remap_pages,
 };
 
 

fs/btrfs/file.c

@@ -2081,7 +2081,6 @@ static const struct vm_operations_struct btrfs_file_vm_ops = {
 	.fault		= filemap_fault,
 	.map_pages	= filemap_map_pages,
 	.page_mkwrite	= btrfs_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 static int btrfs_file_mmap(struct file	*filp, struct vm_area_struct *vma)

fs/ceph/addr.c

@@ -1569,7 +1569,6 @@ out:
 static struct vm_operations_struct ceph_vmops = {
 	.fault		= ceph_filemap_fault,
 	.page_mkwrite	= ceph_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 int ceph_mmap(struct file *file, struct vm_area_struct *vma)

fs/cifs/file.c

@@ -3236,7 +3236,6 @@ static struct vm_operations_struct cifs_file_vm_ops = {
 	.fault = filemap_fault,
 	.map_pages = filemap_map_pages,
 	.page_mkwrite = cifs_page_mkwrite,
-	.remap_pages = generic_file_remap_pages,
 };
 
 int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma)

fs/ext4/file.c

@@ -195,7 +195,6 @@ static const struct vm_operations_struct ext4_file_vm_ops = {
 	.fault		= filemap_fault,
 	.map_pages	= filemap_map_pages,
 	.page_mkwrite   = ext4_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma)

fs/f2fs/file.c

@@ -92,7 +92,6 @@ static const struct vm_operations_struct f2fs_file_vm_ops = {
 	.fault		= filemap_fault,
 	.map_pages	= filemap_map_pages,
 	.page_mkwrite	= f2fs_vm_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 static int get_parent_ino(struct inode *inode, nid_t *pino)

fs/fuse/file.c

@@ -2062,7 +2062,6 @@ static const struct vm_operations_struct fuse_file_vm_ops = {
 	.fault		= filemap_fault,
 	.map_pages	= filemap_map_pages,
 	.page_mkwrite	= fuse_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 static int fuse_file_mmap(struct file *file, struct vm_area_struct *vma)

fs/gfs2/file.c

@@ -498,7 +498,6 @@ static const struct vm_operations_struct gfs2_vm_ops = {
 	.fault = filemap_fault,
 	.map_pages = filemap_map_pages,
 	.page_mkwrite = gfs2_page_mkwrite,
-	.remap_pages = generic_file_remap_pages,
 };
 
 /**

fs/inode.c

@@ -356,7 +356,6 @@ void address_space_init_once(struct address_space *mapping)
 	INIT_LIST_HEAD(&mapping->private_list);
 	spin_lock_init(&mapping->private_lock);
 	mapping->i_mmap = RB_ROOT;
-	INIT_LIST_HEAD(&mapping->i_mmap_nonlinear);
 }
 EXPORT_SYMBOL(address_space_init_once);
 

fs/ioctl.c

@@ -379,6 +379,11 @@ int __generic_block_fiemap(struct inode *inode,
 				past_eof = true;
 		}
 		cond_resched();
+		if (fatal_signal_pending(current)) {
+			ret = -EINTR;
+			break;
+		}
+
 	} while (1);
 
 	/* If ret is 1 then we just hit the end of the extent array */

fs/nfs/file.c

@@ -646,7 +646,6 @@ static const struct vm_operations_struct nfs_file_vm_ops = {
 	.fault = filemap_fault,
 	.map_pages = filemap_map_pages,
 	.page_mkwrite = nfs_vm_page_mkwrite,
-	.remap_pages = generic_file_remap_pages,
 };
 
 static int nfs_need_sync_write(struct file *filp, struct inode *inode)

fs/nilfs2/file.c

@@ -128,7 +128,6 @@ static const struct vm_operations_struct nilfs_file_vm_ops = {
 	.fault		= filemap_fault,
 	.map_pages	= filemap_map_pages,
 	.page_mkwrite	= nilfs_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 static int nilfs_file_mmap(struct file *file, struct vm_area_struct *vma)

fs/notify/fanotify/fanotify.c

@@ -140,7 +140,7 @@ static bool fanotify_should_send_event(struct fsnotify_mark *inode_mark,
 	}
 
 	if (S_ISDIR(path->dentry->d_inode->i_mode) &&
-	    (marks_ignored_mask & FS_ISDIR))
+	    !(marks_mask & FS_ISDIR & ~marks_ignored_mask))
 		return false;
 
 	if (event_mask & marks_mask & ~marks_ignored_mask)

fs/notify/fanotify/fanotify_user.c

@@ -487,20 +487,27 @@ static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark,
 					    unsigned int flags,
 					    int *destroy)
 {
-	__u32 oldmask;
+	__u32 oldmask = 0;
 
 	spin_lock(&fsn_mark->lock);
 	if (!(flags & FAN_MARK_IGNORED_MASK)) {
+		__u32 tmask = fsn_mark->mask & ~mask;
+
+		if (flags & FAN_MARK_ONDIR)
+			tmask &= ~FAN_ONDIR;
+
 		oldmask = fsn_mark->mask;
-		fsnotify_set_mark_mask_locked(fsn_mark, (oldmask & ~mask));
+		fsnotify_set_mark_mask_locked(fsn_mark, tmask);
 	} else {
-		oldmask = fsn_mark->ignored_mask;
-		fsnotify_set_mark_ignored_mask_locked(fsn_mark, (oldmask & ~mask));
+		__u32 tmask = fsn_mark->ignored_mask & ~mask;
+		if (flags & FAN_MARK_ONDIR)
+			tmask &= ~FAN_ONDIR;
+
+		fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask);
 	}
+	*destroy = !(fsn_mark->mask | fsn_mark->ignored_mask);
 	spin_unlock(&fsn_mark->lock);
 
-	*destroy = !(oldmask & ~mask);
-
 	return mask & oldmask;
 }
 
@@ -569,20 +576,22 @@ static __u32 fanotify_mark_add_to_mask(struct fsnotify_mark *fsn_mark,
 
 	spin_lock(&fsn_mark->lock);
 	if (!(flags & FAN_MARK_IGNORED_MASK)) {
+		__u32 tmask = fsn_mark->mask | mask;
+
+		if (flags & FAN_MARK_ONDIR)
+			tmask |= FAN_ONDIR;
+
 		oldmask = fsn_mark->mask;
-		fsnotify_set_mark_mask_locked(fsn_mark, (oldmask | mask));
+		fsnotify_set_mark_mask_locked(fsn_mark, tmask);
 	} else {
 		__u32 tmask = fsn_mark->ignored_mask | mask;
+		if (flags & FAN_MARK_ONDIR)
+			tmask |= FAN_ONDIR;
+
 		fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask);
 		if (flags & FAN_MARK_IGNORED_SURV_MODIFY)
 			fsn_mark->flags |= FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY;
 	}
-
-	if (!(flags & FAN_MARK_ONDIR)) {
-		__u32 tmask = fsn_mark->ignored_mask | FAN_ONDIR;
-		fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask);
-	}
-
 	spin_unlock(&fsn_mark->lock);
 
 	return mask & ~oldmask;

fs/ocfs2/acl.c

@@ -245,16 +245,14 @@ int ocfs2_set_acl(handle_t *handle,
 			ret = posix_acl_equiv_mode(acl, &mode);
 			if (ret < 0)
 				return ret;
-			else {
-				if (ret == 0)
-					acl = NULL;
 
-				ret = ocfs2_acl_set_mode(inode, di_bh,
-							 handle, mode);
-				if (ret)
-					return ret;
+			if (ret == 0)
+				acl = NULL;
 
-			}
+			ret = ocfs2_acl_set_mode(inode, di_bh,
+						 handle, mode);
+			if (ret)
+				return ret;
 		}
 		break;
 	case ACL_TYPE_DEFAULT:

fs/ocfs2/alloc.c

@@ -6873,7 +6873,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
 	if (IS_ERR(handle)) {
 		ret = PTR_ERR(handle);
 		mlog_errno(ret);
-		goto out_unlock;
+		goto out;
 	}
 
 	ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
@@ -6931,7 +6931,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
 		if (ret) {
 			mlog_errno(ret);
 			need_free = 1;
-			goto out_commit;
+			goto out_unlock;
 		}
 
 		page_end = PAGE_CACHE_SIZE;
@@ -6964,12 +6964,16 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
 		if (ret) {
 			mlog_errno(ret);
 			need_free = 1;
-			goto out_commit;
+			goto out_unlock;
 		}
 
 		inode->i_blocks = ocfs2_inode_sector_count(inode);
 	}
 
+out_unlock:
+	if (pages)
+		ocfs2_unlock_and_free_pages(pages, num_pages);
+
 out_commit:
 	if (ret < 0 && did_quota)
 		dquot_free_space_nodirty(inode,
@@ -6989,15 +6993,11 @@ out_commit:
 
 	ocfs2_commit_trans(osb, handle);
 
-out_unlock:
+out:
 	if (data_ac)
 		ocfs2_free_alloc_context(data_ac);
-
-out:
-	if (pages) {
-		ocfs2_unlock_and_free_pages(pages, num_pages);
+	if (pages)
 		kfree(pages);
-	}
 
 	return ret;
 }

fs/ocfs2/cluster/tcp.c

@@ -1016,7 +1016,8 @@ void o2net_fill_node_map(unsigned long *map, unsigned bytes)
 
 	memset(map, 0, bytes);
 	for (node = 0; node < O2NM_MAX_NODES; ++node) {
-		o2net_tx_can_proceed(o2net_nn_from_num(node), &sc, &ret);
+		if (!o2net_tx_can_proceed(o2net_nn_from_num(node), &sc, &ret))
+			continue;
 		if (!ret) {
 			set_bit(node, map);
 			sc_put(sc);

fs/ocfs2/cluster/tcp_internal.h

@@ -107,12 +107,12 @@ struct o2net_node {
 	struct list_head		nn_status_list;
 
 	/* connects are attempted from when heartbeat comes up until either hb
-	 * goes down, the node is unconfigured, no connect attempts succeed
-	 * before O2NET_CONN_IDLE_DELAY, or a connect succeeds.  connect_work
-	 * is queued from set_nn_state both from hb up and from itself if a
-	 * connect attempt fails and so can be self-arming.  shutdown is
-	 * careful to first mark the nn such that no connects will be attempted
-	 * before canceling delayed connect work and flushing the queue. */
+	 * goes down, the node is unconfigured, or a connect succeeds.
+	 * connect_work is queued from set_nn_state both from hb up and from
+	 * itself if a connect attempt fails and so can be self-arming.
+	 * shutdown is careful to first mark the nn such that no connects will
+	 * be attempted before canceling delayed connect work and flushing the
+	 * queue. */
 	struct delayed_work		nn_connect_work;
 	unsigned long			nn_last_connect_attempt;
 

fs/ocfs2/dir.c

@@ -3456,10 +3456,8 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
 	int blocksize = dir->i_sb->s_blocksize;
 
 	status = ocfs2_read_dir_block(dir, 0, &bh, 0);
-	if (status) {
-		mlog_errno(status);
+	if (status)
 		goto bail;
-	}
 
 	rec_len = OCFS2_DIR_REC_LEN(namelen);
 	offset = 0;
@@ -3480,10 +3478,9 @@ static int ocfs2_find_dir_space_el(struct inode *dir, const char *name,
 			status = ocfs2_read_dir_block(dir,
 					     offset >> sb->s_blocksize_bits,
 					     &bh, 0);
-			if (status) {
-				mlog_errno(status);
+			if (status)
 				goto bail;
-			}
+
 			/* move to next block */
 			de = (struct ocfs2_dir_entry *) bh->b_data;
 		}
@@ -3513,7 +3510,6 @@ next:
 		de = (struct ocfs2_dir_entry *)((char *) de + le16_to_cpu(de->rec_len));
 	}
 
-	status = 0;
 bail:
 	brelse(bh);
 	if (status)

fs/ocfs2/dlm/dlmast.c

@@ -385,8 +385,12 @@ int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
 		head = &res->granted;
 
 	list_for_each_entry(lock, head, list) {
-		if (lock->ml.cookie == cookie)
+		/* if lock is found but unlock is pending ignore the bast */
+		if (lock->ml.cookie == cookie) {
+			if (lock->unlock_pending)
+				break;
 			goto do_ast;
+		}
 	}
 
 	mlog(0, "Got %sast for unknown lock! cookie=%u:%llu, name=%.*s, "

fs/ocfs2/dlm/dlmdebug.c

@@ -406,7 +406,7 @@ static int debug_purgelist_print(struct dlm_ctxt *dlm, char *buf, int len)
 	}
 	spin_unlock(&dlm->spinlock);
 
-	out += snprintf(buf + out, len - out, "Total on list: %ld\n", total);
+	out += snprintf(buf + out, len - out, "Total on list: %lu\n", total);
 
 	return out;
 }
@@ -464,7 +464,7 @@ static int debug_mle_print(struct dlm_ctxt *dlm, char *buf, int len)
 	spin_unlock(&dlm->master_lock);
 
 	out += snprintf(buf + out, len - out,
-			"Total: %ld, Longest: %ld\n", total, longest);
+			"Total: %lu, Longest: %lu\n", total, longest);
 	return out;
 }
 

fs/ocfs2/dlm/dlmdomain.c

@@ -674,20 +674,6 @@ static void dlm_leave_domain(struct dlm_ctxt *dlm)
 	spin_unlock(&dlm->spinlock);
 }
 
-int dlm_joined(struct dlm_ctxt *dlm)
-{
-	int ret = 0;
-
-	spin_lock(&dlm_domain_lock);
-
-	if (dlm->dlm_state == DLM_CTXT_JOINED)
-		ret = 1;
-
-	spin_unlock(&dlm_domain_lock);
-
-	return ret;
-}
-
 int dlm_shutting_down(struct dlm_ctxt *dlm)
 {
 	int ret = 0;

fs/ocfs2/dlm/dlmdomain.h

@@ -28,7 +28,6 @@
 extern spinlock_t dlm_domain_lock;
 extern struct list_head dlm_domains;
 
-int dlm_joined(struct dlm_ctxt *dlm);
 int dlm_shutting_down(struct dlm_ctxt *dlm);
 void dlm_fire_domain_eviction_callbacks(struct dlm_ctxt *dlm,
 					int node_num);

fs/ocfs2/dlm/dlmrecovery.c

@@ -1070,6 +1070,9 @@ static void dlm_move_reco_locks_to_list(struct dlm_ctxt *dlm,
 					     dead_node, dlm->name);
 					list_del_init(&lock->list);
 					dlm_lock_put(lock);
+					/* Can't schedule DLM_UNLOCK_FREE_LOCK
+					 * - do manually */
+					dlm_lock_put(lock);
 					break;
 				}
 			}
@@ -2346,6 +2349,10 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
 						     dead_node, dlm->name);
 						list_del_init(&lock->list);
 						dlm_lock_put(lock);
+						/* Can't schedule
+						 * DLM_UNLOCK_FREE_LOCK
+						 * - do manually */
+						dlm_lock_put(lock);
 						break;
 					}
 				}

fs/ocfs2/dlmglue.c

@@ -3750,6 +3750,9 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres,
 			break;
 		spin_unlock(&dentry_attach_lock);
 
+		if (S_ISDIR(dl->dl_inode->i_mode))
+			shrink_dcache_parent(dentry);
+
 		mlog(0, "d_delete(%pd);\n", dentry);
 
 		/*

fs/ocfs2/file.c

@@ -569,7 +569,7 @@ static int __ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
 	handle_t *handle = NULL;
 	struct ocfs2_alloc_context *data_ac = NULL;
 	struct ocfs2_alloc_context *meta_ac = NULL;
-	enum ocfs2_alloc_restarted why;
+	enum ocfs2_alloc_restarted why = RESTART_NONE;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 	struct ocfs2_extent_tree et;
 	int did_quota = 0;

fs/ocfs2/journal.c

@@ -1447,7 +1447,6 @@ bail:
 	 * requires that we call do_exit().  And it isn't exported, but
 	 * complete_and_exit() seems to be a minimal wrapper around it. */
 	complete_and_exit(NULL, status);
-	return status;
 }
 
 void ocfs2_recovery_thread(struct ocfs2_super *osb, int node_num)

fs/ocfs2/mmap.c

@@ -173,7 +173,6 @@ out:
 static const struct vm_operations_struct ocfs2_file_vm_ops = {
 	.fault		= ocfs2_fault,
 	.page_mkwrite	= ocfs2_page_mkwrite,
-	.remap_pages	= generic_file_remap_pages,
 };
 
 int ocfs2_mmap(struct file *file, struct vm_area_struct *vma)

fs/ocfs2/ocfs2.h

@@ -279,6 +279,8 @@ enum ocfs2_mount_options
 						     writes */
 	OCFS2_MOUNT_HB_NONE = 1 << 13, /* No heartbeat */
 	OCFS2_MOUNT_HB_GLOBAL = 1 << 14, /* Global heartbeat */
+
+	OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15,  /* Journal Async Commit */
 };
 
 #define OCFS2_OSB_SOFT_RO	0x0001

fs/ocfs2/quota_local.c

@@ -73,12 +73,6 @@ static loff_t ol_dqblk_off(struct super_block *sb, int c, int off)
 	       ol_dqblk_block_off(sb, c, off);
 }
 
-/* Compute block number from given offset */
-static inline unsigned int ol_dqblk_file_block(struct super_block *sb, loff_t off)
-{
-	return off >> sb->s_blocksize_bits;
-}
-
 static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off)
 {
 	return off & ((1 << sb->s_blocksize_bits) - 1);

fs/ocfs2/refcounttree.c

@@ -2428,8 +2428,6 @@ static int ocfs2_calc_refcount_meta_credits(struct super_block *sb,
 			get_bh(prev_bh);
 		}
 
-		rb = (struct ocfs2_refcount_block *)ref_leaf_bh->b_data;
-
 		trace_ocfs2_calc_refcount_meta_credits_iterate(
 				recs_add, (unsigned long long)cpos, clusters,
 				(unsigned long long)le64_to_cpu(rec.r_cpos),

fs/ocfs2/reservations.c

@@ -39,7 +39,7 @@
 #define OCFS2_CHECK_RESERVATIONS
 #endif
 
-DEFINE_SPINLOCK(resv_lock);
+static DEFINE_SPINLOCK(resv_lock);
 
 #define	OCFS2_MIN_RESV_WINDOW_BITS	8
 #define	OCFS2_MAX_RESV_WINDOW_BITS	1024

fs/ocfs2/super.c

@@ -191,6 +191,7 @@ enum {
 	Opt_coherency_full,
 	Opt_resv_level,
 	Opt_dir_resv_level,
+	Opt_journal_async_commit,
 	Opt_err,
 };
 
@@ -222,6 +223,7 @@ static const match_table_t tokens = {
 	{Opt_coherency_full, "coherency=full"},
 	{Opt_resv_level, "resv_level=%u"},
 	{Opt_dir_resv_level, "dir_resv_level=%u"},
+	{Opt_journal_async_commit, "journal_async_commit"},
 	{Opt_err, NULL}
 };
 
@@ -1470,6 +1472,9 @@ static int ocfs2_parse_options(struct super_block *sb,
 			    option < OCFS2_MAX_RESV_LEVEL)
 				mopt->dir_resv_level = option;
 			break;
+		case Opt_journal_async_commit:
+			mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT;
+			break;
 		default:
 			mlog(ML_ERROR,
 			     "Unrecognized mount option \"%s\" "
@@ -1576,6 +1581,9 @@ static int ocfs2_show_options(struct seq_file *s, struct dentry *root)
 	if (osb->osb_dir_resv_level != osb->osb_resv_level)
 		seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
 
+	if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
+		seq_printf(s, ",journal_async_commit");
+
 	return 0;
 }
 
@@ -2445,6 +2453,15 @@ static int ocfs2_check_volume(struct ocfs2_super *osb)
 		goto finally;
 	}
 
+	if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT)
+		jbd2_journal_set_features(osb->journal->j_journal,
+				JBD2_FEATURE_COMPAT_CHECKSUM, 0,
+				JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+	else
+		jbd2_journal_clear_features(osb->journal->j_journal,
+				JBD2_FEATURE_COMPAT_CHECKSUM, 0,
+				JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+
 	if (dirty) {
 		/* recover my local alloc if we didn't unmount cleanly. */
 		status = ocfs2_begin_local_alloc_recovery(osb,

fs/ocfs2/xattr.c

@@ -5334,16 +5334,6 @@ out:
 	return ret;
 }
 
-static inline char *ocfs2_xattr_bucket_get_val(struct inode *inode,
-					struct ocfs2_xattr_bucket *bucket,
-					int offs)
-{
-	int block_off = offs >> inode->i_sb->s_blocksize_bits;
-
-	offs = offs % inode->i_sb->s_blocksize;
-	return bucket_block(bucket, block_off) + offs;
-}
-
 /*
  * Truncate the specified xe_off entry in xattr bucket.
  * bucket is indicated by header_bh and len is the new length.