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authorIlya Dryomov <idryomov@gmail.com>2018-02-17 12:41:20 +0300
committerIlya Dryomov <idryomov@gmail.com>2018-04-02 11:12:43 +0300
commit08c1ac508b6dc20ac866e7cdb7279245437c7d26 (patch)
tree5b1eee491292e772b446ceba9729fb6ba4d899f1 /net/ceph/osdmap.c
parented0811d2d243c4195580a9671266031907c02ca7 (diff)
downloadlinux-08c1ac508b6dc20ac866e7cdb7279245437c7d26.tar.xz
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>
Diffstat (limited to 'net/ceph/osdmap.c')
-rw-r--r--net/ceph/osdmap.c37
1 files changed, 0 insertions, 37 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index e3ebbe2ecdad..9645ffd6acfb 100644
--- 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>
@@ -2141,42 +2140,6 @@ bool ceph_osds_changed(const struct ceph_osds *old_acting,
}
/*
- * 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.
*
* Should only be called with target_oid and target_oloc (as opposed to