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authorAlex Elder <elder@inktank.com>2013-04-30 00:44:32 -0500
committerSage Weil <sage@inktank.com>2013-05-01 21:20:08 -0700
commit4f0dcb10cf1454a1c38aeaa04cb2757535e4905e (patch)
tree1637c6a8961c95bdf02b7326cea79ca9b0b8e07f /include/linux/ceph
parentb536f69a3a589113992c32982bf2981c8225c9da (diff)
downloadblackbird-op-linux-4f0dcb10cf1454a1c38aeaa04cb2757535e4905e.tar.gz
blackbird-op-linux-4f0dcb10cf1454a1c38aeaa04cb2757535e4905e.zip
libceph: create source file "net/ceph/snapshot.c"
This creates a new source file "net/ceph/snapshot.c" to contain utility routines related to ceph snapshot contexts. The main motivation was to define ceph_create_snap_context() as a common way to create these structures, but I've moved the definitions of ceph_get_snap_context() and ceph_put_snap_context() there too. (The benefit of inlining those is very small, and I'd rather keep this collection of functions together.) Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'include/linux/ceph')
-rw-r--r--include/linux/ceph/libceph.h30
1 files changed, 5 insertions, 25 deletions
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 5493d7b86423..2e3024881a5e 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -157,31 +157,11 @@ struct ceph_snap_context {
u64 snaps[];
};
-static inline struct ceph_snap_context *
-ceph_get_snap_context(struct ceph_snap_context *sc)
-{
- /*
- printk("get_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
- atomic_read(&sc->nref)+1);
- */
- if (sc)
- atomic_inc(&sc->nref);
- return sc;
-}
-
-static inline void ceph_put_snap_context(struct ceph_snap_context *sc)
-{
- if (!sc)
- return;
- /*
- printk("put_snap_context %p %d -> %d\n", sc, atomic_read(&sc->nref),
- atomic_read(&sc->nref)-1);
- */
- if (atomic_dec_and_test(&sc->nref)) {
- /*printk(" deleting snap_context %p\n", sc);*/
- kfree(sc);
- }
-}
+extern struct ceph_snap_context *ceph_create_snap_context(u32 snap_count,
+ gfp_t gfp_flags);
+extern struct ceph_snap_context *ceph_get_snap_context(
+ struct ceph_snap_context *sc);
+extern void ceph_put_snap_context(struct ceph_snap_context *sc);
/*
* calculate the number of pages a given length and offset map onto,
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