Merge tag 'for-linus-4.18-ofs' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
 "Fixes and cleanups:

   - fix some sparse warnings

   - cleanup some code formatting

   - fix up some attribute/meta-data related code"

* tag 'for-linus-4.18-ofs' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: use sparse annotations for holding locks across function calls.
  orangefs: make debug_help_fops static
  orangefs: remove unused function orangefs_get_bufmap_init
  orangefs: specify user pointers when using dev_map_desc and bufmap
  orangefs: formatting cleanups
  orangefs: set i_size on new symlink
  orangefs: report attributes_mask and attributes for statx
  orangefs: make struct orangefs_file_vm_ops static
  orangefs: revamp block sizes

fs/orangefs/devorangefs-req.c

@@ -281,14 +281,17 @@ restart:
 	ret = copy_to_user(buf, &proto_ver, sizeof(__s32));
 	if (ret != 0)
 		goto error;
-	ret = copy_to_user(buf+sizeof(__s32), &magic, sizeof(__s32));
+	ret = copy_to_user(buf + sizeof(__s32), &magic, sizeof(__s32));
 	if (ret != 0)
 		goto error;
-	ret = copy_to_user(buf+2 * sizeof(__s32), &cur_op->tag, sizeof(__u64));
+	ret = copy_to_user(buf + 2 * sizeof(__s32),
+		&cur_op->tag,
+		sizeof(__u64));
 	if (ret != 0)
 		goto error;
-	ret = copy_to_user(buf+2*sizeof(__s32)+sizeof(__u64), &cur_op->upcall,
-			   sizeof(struct orangefs_upcall_s));
+	ret = copy_to_user(buf + 2 * sizeof(__s32) + sizeof(__u64),
+		&cur_op->upcall,
+		sizeof(struct orangefs_upcall_s));
 	if (ret != 0)
 		goto error;
 
@@ -381,7 +384,7 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
 			   (unsigned int) MAX_DEV_REQ_DOWNSIZE);
 		return -EFAULT;
 	}
-     
+
 	if (!copy_from_iter_full(&head, head_size, iter)) {
 		gossip_err("%s: failed to copy head.\n", __func__);
 		return -EFAULT;
@@ -426,7 +429,7 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
 		goto wakeup;
 
 	/*
-	 * We've successfully peeled off the head and the downcall. 
+	 * We've successfully peeled off the head and the downcall.
 	 * Something has gone awry if total doesn't equal the
 	 * sum of head_size, downcall_size and trailer_size.
 	 */
@@ -477,7 +480,7 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
 wakeup:
 	/*
 	 * Return to vfs waitqueue, and back to service_operation
-	 * through wait_for_matching_downcall. 
+	 * through wait_for_matching_downcall.
 	 */
 	spin_lock(&op->lock);
 	if (unlikely(op_is_cancel(op))) {

fs/orangefs/file.c

@@ -162,7 +162,7 @@ populate_shared_memory:
 				else
 					ret = 0;
 				break;
-			/* 
+			/*
 			 * If the op was in progress when the interrupt
 			 * occurred, then the client-core was able to
 			 * trigger the write.
@@ -544,7 +544,7 @@ static int orangefs_fault(struct vm_fault *vmf)
 	return filemap_fault(vmf);
 }
 
-const struct vm_operations_struct orangefs_file_vm_ops = {
+static const struct vm_operations_struct orangefs_file_vm_ops = {
 	.fault = orangefs_fault,
 	.map_pages = filemap_map_pages,
 	.page_mkwrite = filemap_page_mkwrite,

fs/orangefs/inode.c

@@ -20,8 +20,8 @@ static int read_one_page(struct page *page)
 	int max_block;
 	ssize_t bytes_read = 0;
 	struct inode *inode = page->mapping->host;
-	const __u32 blocksize = PAGE_SIZE;	/* inode->i_blksize */
-	const __u32 blockbits = PAGE_SHIFT;	/* inode->i_blkbits */
+	const __u32 blocksize = PAGE_SIZE;
+	const __u32 blockbits = PAGE_SHIFT;
 	struct iov_iter to;
 	struct bio_vec bv = {.bv_page = page, .bv_len = PAGE_SIZE};
 
@@ -181,16 +181,15 @@ static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr)
 	new_op->upcall.req.truncate.refn = orangefs_inode->refn;
 	new_op->upcall.req.truncate.size = (__s64) iattr->ia_size;
 
-	ret = service_operation(new_op, __func__,
-				get_interruptible_flag(inode));
+	ret = service_operation(new_op,
+		__func__,
+		get_interruptible_flag(inode));
 
 	/*
 	 * the truncate has no downcall members to retrieve, but
 	 * the status value tells us if it went through ok or not
 	 */
-	gossip_debug(GOSSIP_INODE_DEBUG,
-		     "orangefs: orangefs_truncate got return value of %d\n",
-		     ret);
+	gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret);
 
 	op_release(new_op);
 
@@ -212,8 +211,9 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
 	struct inode *inode = dentry->d_inode;
 
 	gossip_debug(GOSSIP_INODE_DEBUG,
-		     "orangefs_setattr: called on %pd\n",
-		     dentry);
+		"%s: called on %pd\n",
+		__func__,
+		dentry);
 
 	ret = setattr_prepare(dentry, iattr);
 	if (ret)
@@ -230,15 +230,16 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
 
 	ret = orangefs_inode_setattr(inode, iattr);
 	gossip_debug(GOSSIP_INODE_DEBUG,
-		     "orangefs_setattr: inode_setattr returned %d\n",
-		     ret);
+		"%s: orangefs_inode_setattr returned %d\n",
+		__func__,
+		ret);
 
 	if (!ret && (iattr->ia_valid & ATTR_MODE))
 		/* change mod on a file that has ACLs */
 		ret = posix_acl_chmod(inode, inode->i_mode);
 
 out:
-	gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n", ret);
+	gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret);
 	return ret;
 }
 
@@ -262,13 +263,19 @@ int orangefs_getattr(const struct path *path, struct kstat *stat,
 
 		/* override block size reported to stat */
 		orangefs_inode = ORANGEFS_I(inode);
-		stat->blksize = orangefs_inode->blksize;
 
 		if (request_mask & STATX_SIZE)
 			stat->result_mask = STATX_BASIC_STATS;
 		else
 			stat->result_mask = STATX_BASIC_STATS &
 			    ~STATX_SIZE;
+
+		stat->attributes_mask = STATX_ATTR_IMMUTABLE |
+		    STATX_ATTR_APPEND;
+		if (inode->i_flags & S_IMMUTABLE)
+			stat->attributes |= STATX_ATTR_IMMUTABLE;
+		if (inode->i_flags & S_APPEND)
+			stat->attributes |= STATX_ATTR_APPEND;
 	}
 	return ret;
 }
@@ -306,7 +313,7 @@ int orangefs_update_time(struct inode *inode, struct timespec *time, int flags)
 	return orangefs_inode_setattr(inode, &iattr);
 }
 
-/* ORANGEDS2 implementation of VFS inode operations for files */
+/* ORANGEFS2 implementation of VFS inode operations for files */
 static const struct inode_operations orangefs_file_inode_operations = {
 	.get_acl = orangefs_get_acl,
 	.set_acl = orangefs_set_acl,
@@ -325,7 +332,6 @@ static int orangefs_init_iops(struct inode *inode)
 	case S_IFREG:
 		inode->i_op = &orangefs_file_inode_operations;
 		inode->i_fop = &orangefs_file_operations;
-		inode->i_blkbits = PAGE_SHIFT;
 		break;
 	case S_IFLNK:
 		inode->i_op = &orangefs_symlink_inode_operations;
@@ -345,8 +351,8 @@ static int orangefs_init_iops(struct inode *inode)
 }
 
 /*
- * Given a ORANGEFS object identifier (fsid, handle), convert it into a ino_t type
- * that will be used as a hash-index from where the handle will
+ * Given an ORANGEFS object identifier (fsid, handle), convert it into
+ * a ino_t type that will be used as a hash-index from where the handle will
  * be searched for in the VFS hash table of inodes.
  */
 static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref)
@@ -376,8 +382,10 @@ static int orangefs_test_inode(struct inode *inode, void *data)
 	struct orangefs_inode_s *orangefs_inode = NULL;
 
 	orangefs_inode = ORANGEFS_I(inode);
-	return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle), &(ref->khandle))
-		&& orangefs_inode->refn.fs_id == ref->fs_id);
+	/* test handles and fs_ids... */
+	return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle),
+				&(ref->khandle)) &&
+			orangefs_inode->refn.fs_id == ref->fs_id);
 }
 
 /*
@@ -385,16 +393,21 @@ static int orangefs_test_inode(struct inode *inode, void *data)
  * file handle.
  *
  * @sb: the file system super block instance.
- * @ref: The ORANGEFS object for which we are trying to locate an inode structure.
+ * @ref: The ORANGEFS object for which we are trying to locate an inode.
  */
-struct inode *orangefs_iget(struct super_block *sb, struct orangefs_object_kref *ref)
+struct inode *orangefs_iget(struct super_block *sb,
+		struct orangefs_object_kref *ref)
 {
 	struct inode *inode = NULL;
 	unsigned long hash;
 	int error;
 
 	hash = orangefs_handle_hash(ref);
-	inode = iget5_locked(sb, hash, orangefs_test_inode, orangefs_set_inode, ref);
+	inode = iget5_locked(sb,
+			hash,
+			orangefs_test_inode,
+			orangefs_set_inode,
+			ref);
 	if (!inode || !(inode->i_state & I_NEW))
 		return inode;
 

fs/orangefs/namei.c

@@ -278,6 +278,13 @@ static int orangefs_symlink(struct inode *dir,
 		ret = PTR_ERR(inode);
 		goto out;
 	}
+	/*
+	 * This is necessary because orangefs_inode_getattr will not
+	 * re-read symlink size as it is impossible for it to change.
+	 * Invalidating the cache does not help.  orangefs_new_inode
+	 * does not set the correct size (it does not know symname).
+	 */
+	inode->i_size = strlen(symname);
 
 	gossip_debug(GOSSIP_NAME_DEBUG,
 		     "Assigned symlink inode new number of %pU\n",

fs/orangefs/orangefs-bufmap.c

@@ -138,7 +138,7 @@ static int get(struct slot_map *m)
 
 /* used to describe mapped buffers */
 struct orangefs_bufmap_desc {
-	void *uaddr;			/* user space address pointer */
+	void __user *uaddr;		/* user space address pointer */
 	struct page **page_array;	/* array of mapped pages */
 	int array_count;		/* size of above arrays */
 	struct list_head list_link;
@@ -184,7 +184,7 @@ orangefs_bufmap_free(struct orangefs_bufmap *bufmap)
 }
 
 /*
- * XXX: Can the size and shift change while the caller gives up the 
+ * XXX: Can the size and shift change while the caller gives up the
  * XXX: lock between calling this and doing something useful?
  */
 
@@ -215,20 +215,6 @@ int orangefs_bufmap_shift_query(void)
 static DECLARE_WAIT_QUEUE_HEAD(bufmap_waitq);
 static DECLARE_WAIT_QUEUE_HEAD(readdir_waitq);
 
-/*
- * orangefs_get_bufmap_init
- *
- * If bufmap_init is 1, then the shared memory system, including the
- * buffer_index_array, is available.  Otherwise, it is not.
- *
- * returns the value of bufmap_init
- */
-int orangefs_get_bufmap_init(void)
-{
-	return __orangefs_bufmap ? 1 : 0;
-}
-
-
 static struct orangefs_bufmap *
 orangefs_bufmap_alloc(struct ORANGEFS_dev_map_desc *user_desc)
 {
@@ -496,7 +482,7 @@ void orangefs_readdir_index_put(int buffer_index)
 }
 
 /*
- * we've been handed an iovec, we need to copy it to 
+ * we've been handed an iovec, we need to copy it to
  * the shared memory descriptor at "buffer_index".
  */
 int orangefs_bufmap_copy_from_iovec(struct iov_iter *iter,

fs/orangefs/orangefs-debugfs.c

@@ -114,7 +114,7 @@ static const struct seq_operations help_debug_ops = {
 	.show	= help_show,
 };
 
-const struct file_operations debug_help_fops = {
+static const struct file_operations debug_help_fops = {
 	.owner		= THIS_MODULE,
 	.open           = orangefs_debug_help_open,
 	.read           = seq_read,

fs/orangefs/orangefs-kernel.h

@@ -182,7 +182,6 @@ static inline void set_op_state_purged(struct orangefs_kernel_op_s *op)
 struct orangefs_inode_s {
 	struct orangefs_object_kref refn;
 	char link_target[ORANGEFS_NAME_MAX];
-	__s64 blksize;
 	/*
 	 * Reading/Writing Extended attributes need to acquire the appropriate
 	 * reader/writer semaphore on the orangefs_inode_s structure.

fs/orangefs/orangefs-utils.c

@@ -183,9 +183,9 @@ static inline int copy_attributes_from_inode(struct inode *inode,
 		attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;
 
 	/*
-	 * ORANGEFS cannot set size with a setattr operation.  Probably not likely
-	 * to be requested through the VFS, but just in case, don't worry about
-	 * ATTR_SIZE
+	 * ORANGEFS cannot set size with a setattr operation. Probably not
+	 * likely to be requested through the VFS, but just in case, don't
+	 * worry about ATTR_SIZE
 	 */
 
 	if (iattr->ia_valid & ATTR_MODE) {
@@ -200,14 +200,16 @@ static inline int copy_attributes_from_inode(struct inode *inode,
 				tmp_mode -= S_ISVTX;
 			} else {
 				gossip_debug(GOSSIP_UTILS_DEBUG,
-					     "User attempted to set sticky bit on non-root directory; returning EINVAL.\n");
+					"%s: setting sticky bit not supported.\n",
+					__func__);
 				return -EINVAL;
 			}
 		}
 
 		if (tmp_mode & (S_ISUID)) {
 			gossip_debug(GOSSIP_UTILS_DEBUG,
-				     "Attempting to set setuid bit (not supported); returning EINVAL.\n");
+				"%s: setting setuid bit not supported.\n",
+				__func__);
 			return -EINVAL;
 		}
 
@@ -275,7 +277,7 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
 {
 	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
 	struct orangefs_kernel_op_s *new_op;
-	loff_t inode_size, rounded_up_size;
+	loff_t inode_size;
 	int ret, type;
 
 	gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
@@ -330,22 +332,19 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
 		if (request_mask & STATX_SIZE || new) {
 			inode_size = (loff_t)new_op->
 			    downcall.resp.getattr.attributes.size;
-			rounded_up_size =
-			    (inode_size + (4096 - (inode_size % 4096)));
 			inode->i_size = inode_size;
-			orangefs_inode->blksize =
-			    new_op->downcall.resp.getattr.attributes.blksize;
+			inode->i_blkbits = ffs(new_op->downcall.resp.getattr.
+			    attributes.blksize);
 			spin_lock(&inode->i_lock);
 			inode->i_bytes = inode_size;
 			inode->i_blocks =
-			    (unsigned long)(rounded_up_size / 512);
+			    (inode_size + 512 - inode_size % 512)/512;
 			spin_unlock(&inode->i_lock);
 		}
 		break;
 	case S_IFDIR:
 		if (request_mask & STATX_SIZE || new) {
 			inode->i_size = PAGE_SIZE;
-			orangefs_inode->blksize = i_blocksize(inode);
 			spin_lock(&inode->i_lock);
 			inode_set_bytes(inode, inode->i_size);
 			spin_unlock(&inode->i_lock);
@@ -356,7 +355,6 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
 		if (new) {
 			inode->i_size = (loff_t)strlen(new_op->
 			    downcall.resp.getattr.link_target);
-			orangefs_inode->blksize = i_blocksize(inode);
 			ret = strscpy(orangefs_inode->link_target,
 			    new_op->downcall.resp.getattr.link_target,
 			    ORANGEFS_NAME_MAX);
@@ -525,7 +523,9 @@ int orangefs_normalize_to_errno(__s32 error_code)
 			error_code = -ETIMEDOUT;
 		} else {
 			/* assume a default error code */
-			gossip_err("orangefs: warning: got error code without errno equivalent: %d.\n", error_code);
+			gossip_err("%s: bad error code :%d:.\n",
+				__func__,
+				error_code);
 			error_code = -EINVAL;
 		}
 
@@ -542,7 +542,7 @@ int orangefs_normalize_to_errno(__s32 error_code)
 	 * there is a bug somewhere.
 	 */
 	} else {
-		gossip_err("orangefs: orangefs_normalize_to_errno: got error code which is not from ORANGEFS.\n");
+		gossip_err("%s: unknown error code.\n", __func__);
 		error_code = -EINVAL;
 	}
 	return error_code;

fs/orangefs/protocol.h

@@ -342,7 +342,7 @@ enum {
  * that may be 32 bit!
  */
 struct ORANGEFS_dev_map_desc {
-	void *ptr;
+	void __user *ptr;
 	__s32 total_size;
 	__s32 size;
 	__s32 count;

fs/orangefs/super.c

@@ -156,9 +156,10 @@ static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	sb = dentry->d_sb;
 
 	gossip_debug(GOSSIP_SUPER_DEBUG,
-		     "orangefs_statfs: called on sb %p (fs_id is %d)\n",
-		     sb,
-		     (int)(ORANGEFS_SB(sb)->fs_id));
+			"%s: called on sb %p (fs_id is %d)\n",
+			__func__,
+			sb,
+			(int)(ORANGEFS_SB(sb)->fs_id));
 
 	new_op = op_alloc(ORANGEFS_VFS_OP_STATFS);
 	if (!new_op)
@@ -198,7 +199,7 @@ static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf)
 
 out_op_release:
 	op_release(new_op);
-	gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_statfs: returning %d\n", ret);
+	gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret);
 	return ret;
 }
 
@@ -423,8 +424,8 @@ static int orangefs_fill_sb(struct super_block *sb,
 	sb->s_op = &orangefs_s_ops;
 	sb->s_d_op = &orangefs_dentry_operations;
 
-	sb->s_blocksize = orangefs_bufmap_size_query();
-	sb->s_blocksize_bits = orangefs_bufmap_shift_query();
+	sb->s_blocksize = PAGE_SIZE;
+	sb->s_blocksize_bits = PAGE_SHIFT;
 	sb->s_maxbytes = MAX_LFS_FILESIZE;
 
 	root_object.khandle = ORANGEFS_SB(sb)->root_khandle;

fs/orangefs/waitqueue.c

@@ -17,8 +17,12 @@
 #include "orangefs-kernel.h"
 #include "orangefs-bufmap.h"
 
-static int wait_for_matching_downcall(struct orangefs_kernel_op_s *, long, bool);
-static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *);
+static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op,
+		long timeout,
+		bool interruptible)
+			__acquires(op->lock);
+static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *op)
+	__releases(op->lock);
 
 /*
  * What we do in this function is to walk the list of operations that are
@@ -246,6 +250,7 @@ bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op)
  */
 static void
 	orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s *op)
+		__releases(op->lock)
 {
 	/*
 	 * handle interrupted cases depending on what state we were in when
@@ -313,8 +318,9 @@ static void
  * Returns with op->lock taken.
  */
 static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op,
-				      long timeout,
-				      bool interruptible)
+		long timeout,
+		bool interruptible)
+			__acquires(op->lock)
 {
 	long n;