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authorIlya Dryomov <idryomov@gmail.com>2016-02-16 15:00:24 +0100
committerIlya Dryomov <idryomov@gmail.com>2016-03-25 18:51:52 +0100
commit34b759b4a22b0acb82423389a24699357798cf3c (patch)
tree02c1f45f274762ab91fd180e928aedb93612c5a5 /fs/ceph/snap.c
parentce4355932a9412e0519e70fb1d03d88e39cd621a (diff)
downloadlinux-34b759b4a22b0acb82423389a24699357798cf3c.tar.bz2
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.c16
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);
-}