libceph, ceph: move ceph_calc_file_object_mapping() to striper.c

ceph_calc_file_object_mapping() has nothing to do with osdmaps.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

fs/ceph/addr.c

@@ -15,6 +15,7 @@
 #include "mds_client.h"
 #include "cache.h"
 #include <linux/ceph/osd_client.h>
+#include <linux/ceph/striper.h>
 
 /*
  * Ceph address space ops.

fs/ceph/ioctl.c

@@ -5,7 +5,7 @@
 #include "super.h"
 #include "mds_client.h"
 #include "ioctl.h"
-
+#include <linux/ceph/striper.h>
 
 /*
  * ioctls

include/linux/ceph/osdmap.h

@@ -5,7 +5,6 @@
 #include <linux/rbtree.h>
 #include <linux/ceph/types.h>
 #include <linux/ceph/decode.h>
-#include <linux/ceph/ceph_fs.h>
 #include <linux/crush/crush.h>
 
 /*
@@ -280,10 +279,6 @@ bool ceph_osds_changed(const struct ceph_osds *old_acting,
 		       const struct ceph_osds *new_acting,
 		       bool any_change);
 
-void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
-				   u64 off, u64 len,
-				   u64 *objno, u64 *objoff, u32 *xlen);
-
 int __ceph_object_locator_to_pg(struct ceph_pg_pool_info *pi,
 				const struct ceph_object_id *oid,
 				const struct ceph_object_locator *oloc,

include/linux/ceph/striper.h

@@ -7,6 +7,10 @@
 
 struct ceph_file_layout;
 
+void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
+				   u64 off, u64 len,
+				   u64 *objno, u64 *objoff, u32 *xlen);
+
 struct ceph_object_extent {
 	struct list_head oe_item;
 	u64 oe_objno;

net/ceph/osd_client.c

@@ -20,6 +20,7 @@
 #include <linux/ceph/decode.h>
 #include <linux/ceph/auth.h>
 #include <linux/ceph/pagelist.h>
+#include <linux/ceph/striper.h>
 
 #define OSD_OPREPLY_FRONT_LEN	512
 

net/ceph/osdmap.c

@@ -4,7 +4,6 @@
 
 #include <linux/module.h>
 #include <linux/slab.h>
-#include <asm/div64.h>
 
 #include <linux/ceph/libceph.h>
 #include <linux/ceph/osdmap.h>
@@ -2140,42 +2139,6 @@ bool ceph_osds_changed(const struct ceph_osds *old_acting,
 	return false;
 }
 
-/*
- * Map a file extent to a stripe unit within an object.
- * Fill in objno, offset into object, and object extent length (i.e. the
- * number of bytes mapped, less than or equal to @l->stripe_unit).
- *
- * Example for stripe_count = 3, stripes_per_object = 4:
- *
- * blockno   |  0  3  6  9 |  1  4  7 10 |  2  5  8 11 | 12 15 18 21 | 13 16 19
- * stripeno  |  0  1  2  3 |  0  1  2  3 |  0  1  2  3 |  4  5  6  7 |  4  5  6
- * stripepos |      0      |      1      |      2      |      0      |      1
- * objno     |      0      |      1      |      2      |      3      |      4
- * objsetno  |                    0                    |                    1
- */
-void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
-				   u64 off, u64 len,
-				   u64 *objno, u64 *objoff, u32 *xlen)
-{
-	u32 stripes_per_object = l->object_size / l->stripe_unit;
-	u64 blockno;	/* which su in the file (i.e. globally) */
-	u32 blockoff;	/* offset into su */
-	u64 stripeno;	/* which stripe */
-	u32 stripepos;	/* which su in the stripe,
-			   which object in the object set */
-	u64 objsetno;	/* which object set */
-	u32 objsetpos;	/* which stripe in the object set */
-
-	blockno = div_u64_rem(off, l->stripe_unit, &blockoff);
-	stripeno = div_u64_rem(blockno, l->stripe_count, &stripepos);
-	objsetno = div_u64_rem(stripeno, stripes_per_object, &objsetpos);
-
-	*objno = objsetno * l->stripe_count + stripepos;
-	*objoff = objsetpos * l->stripe_unit + blockoff;
-	*xlen = min_t(u64, len, l->stripe_unit - blockoff);
-}
-EXPORT_SYMBOL(ceph_calc_file_object_mapping);
-
 /*
  * Map an object into a PG.
  *

net/ceph/striper.c

@@ -5,10 +5,45 @@
 #include <linux/math64.h>
 #include <linux/slab.h>
 
-#include <linux/ceph/osdmap.h>
 #include <linux/ceph/striper.h>
 #include <linux/ceph/types.h>
 
+/*
+ * Map a file extent to a stripe unit within an object.
+ * Fill in objno, offset into object, and object extent length (i.e. the
+ * number of bytes mapped, less than or equal to @l->stripe_unit).
+ *
+ * Example for stripe_count = 3, stripes_per_object = 4:
+ *
+ * blockno   |  0  3  6  9 |  1  4  7 10 |  2  5  8 11 | 12 15 18 21 | 13 16 19
+ * stripeno  |  0  1  2  3 |  0  1  2  3 |  0  1  2  3 |  4  5  6  7 |  4  5  6
+ * stripepos |      0      |      1      |      2      |      0      |      1
+ * objno     |      0      |      1      |      2      |      3      |      4
+ * objsetno  |                    0                    |                    1
+ */
+void ceph_calc_file_object_mapping(struct ceph_file_layout *l,
+				   u64 off, u64 len,
+				   u64 *objno, u64 *objoff, u32 *xlen)
+{
+	u32 stripes_per_object = l->object_size / l->stripe_unit;
+	u64 blockno;	/* which su in the file (i.e. globally) */
+	u32 blockoff;	/* offset into su */
+	u64 stripeno;	/* which stripe */
+	u32 stripepos;	/* which su in the stripe,
+			   which object in the object set */
+	u64 objsetno;	/* which object set */
+	u32 objsetpos;	/* which stripe in the object set */
+
+	blockno = div_u64_rem(off, l->stripe_unit, &blockoff);
+	stripeno = div_u64_rem(blockno, l->stripe_count, &stripepos);
+	objsetno = div_u64_rem(stripeno, stripes_per_object, &objsetpos);
+
+	*objno = objsetno * l->stripe_count + stripepos;
+	*objoff = objsetpos * l->stripe_unit + blockoff;
+	*xlen = min_t(u64, len, l->stripe_unit - blockoff);
+}
+EXPORT_SYMBOL(ceph_calc_file_object_mapping);
+
 /*
  * Return the last extent with given objno (@object_extents is sorted
  * by objno).  If not found, return NULL and set @add_pos so that the