diff options
| author | Ilya Dryomov <idryomov@gmail.com> | 2016-02-16 17:00:24 +0300 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-03-25 20:51:52 +0300 |
| commit | 34b759b4a22b0acb82423389a24699357798cf3c (patch) | |
| tree | 02c1f45f274762ab91fd180e928aedb93612c5a5 /fs/ceph/snap.c | |
| parent | ce4355932a9412e0519e70fb1d03d88e39cd621a (diff) | |
| download | linux-34b759b4a22b0acb82423389a24699357798cf3c.tar.xz | |
ceph: kill ceph_empty_snapc
ceph_empty_snapc->num_snaps == 0 at all times. Passing such a snapc to
ceph_osdc_alloc_request() (possibly through ceph_osdc_new_request()) is
equivalent to passing NULL, as ceph_osdc_alloc_request() uses it only
for sizing the request message.
Further, in all four cases the subsequent ceph_osdc_build_request() is
passed NULL for snapc, meaning that 0 is encoded for seq and num_snaps
and making ceph_empty_snapc entirely useless. The two cases where it
actually mattered were removed in commits 860560904962 ("ceph: avoid
sending unnessesary FLUSHSNAP message") and 23078637e054 ("ceph: fix
queuing inode to mdsdir's snaprealm").
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/snap.c')
| -rw-r--r-- | fs/ceph/snap.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index 4aa7122a8d38..9caaa7ffc93f 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -296,8 +296,6 @@ static int cmpu64_rev(const void *a, const void *b) } -struct ceph_snap_context *ceph_empty_snapc; - /* * build the snap context for a given realm. */ @@ -987,17 +985,3 @@ out: up_write(&mdsc->snap_rwsem); return; } - -int __init ceph_snap_init(void) -{ - ceph_empty_snapc = ceph_create_snap_context(0, GFP_NOFS); - if (!ceph_empty_snapc) - return -ENOMEM; - ceph_empty_snapc->seq = 1; - return 0; -} - -void ceph_snap_exit(void) -{ - ceph_put_snap_context(ceph_empty_snapc); -} |