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| author | Sage Weil <sage@newdream.net> | 2011-05-12 15:13:23 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-05-19 11:25:03 -0700 |
| commit | 3540303f87115cbdae6ed2cab44ce6a7676d48d3 (patch) | |
| tree | eb1003ac91370488972e3e5b126771707cf98a88 /fs/ceph | |
| parent | 12a2f643b0e6e791ba61485430d0003eeb3e373c (diff) | |
| download | linux-stable-3540303f87115cbdae6ed2cab44ce6a7676d48d3.tar.gz linux-stable-3540303f87115cbdae6ed2cab44ce6a7676d48d3.tar.bz2 linux-stable-3540303f87115cbdae6ed2cab44ce6a7676d48d3.zip | |
ceph: fix rare potential cap leak
If we grab new_cap, retake the lock, and find we already have a cap now
for the given mds, release new_cap.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/caps.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 2a5404c1c42f..591202bc9668 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -569,7 +569,8 @@ retry: list_add_tail(&cap->session_caps, &session->s_caps); session->s_nr_caps++; spin_unlock(&session->s_cap_lock); - } + } else if (new_cap) + ceph_put_cap(mdsc, new_cap); if (!ci->i_snap_realm) { /* |