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| author |   Alex Elder <elder@inktank.com> | 2013-04-30 00:44:32 -0500 |
|---|---|---|
| committer |   Sage Weil <sage@inktank.com> | 2013-05-01 21:20:08 -0700 |
| commit | 4f0dcb10cf1454a1c38aeaa04cb2757535e4905e (patch) | |
| tree | 1637c6a8961c95bdf02b7326cea79ca9b0b8e07f /include/linux/ceph/libceph.h | |
| parent | rbd: set up devices only for mapped images (diff) | |
| download | linux-dev-4f0dcb10cf1454a1c38aeaa04cb2757535e4905e.tar.xz linux-dev-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/libceph.h')
| -rw-r--r-- | include/linux/ceph/libceph.h | 30 |
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, |