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>

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index c0fe1b6f47ac750de0a87e8c41fb75c037ec6345..c3557a9ea73d62faac5bba519000350b840cadc5 100644 (file)
--- a/fs/ceph/addr.c
+++ b/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.

diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index b855d24a895a302d875eca622b01a68a7d5ed079..c90f03beb15d0b70ef0455015cf2343746227574 100644 (file)
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -5,7 +5,7 @@
 #include "super.h"
 #include "mds_client.h"
 #include "ioctl.h"
-
+#include <linux/ceph/striper.h>
 
 /*
  * ioctls

diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 92314035dac1705fbfbb03d92b475f8436a14113..e71fb222c7c3640e46426dc5a0de96d6814d96df 100644 (file)
--- a/include/linux/ceph/osdmap.h
+++ b/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,

diff --git a/include/linux/ceph/striper.h b/include/linux/ceph/striper.h
index 74134ee5fdc8b67ae4b4b77469f4d697d8b476cf..cbd0d24b714867c07de06b201ee74c43ef34f32d 100644 (file)
--- a/include/linux/ceph/striper.h
+++ b/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;

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 407be0533c183d55b614cee28f1a35471100ab2a..4a3af96dc0574fee373bff7460734ea625f81f65 100644 (file)
--- a/net/ceph/osd_client.c
+++ b/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
 

diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index e3ebbe2ecdad8aab18a04d564e0c591f575a3e86..9645ffd6acfb24b1432ad69f655d1caa09741fcf 100644 (file)
--- a/net/ceph/osdmap.c
+++ b/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.
  *

diff --git a/net/ceph/striper.c b/net/ceph/striper.c
index bc1e4de30df9a6047e1b80286f1d56cbe4664e4d..c36462dc86b721e9ccd8f53b9b2419520110e76a 100644 (file)
--- a/net/ceph/striper.c
+++ b/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