diff options
| author | Yan, Zheng | 2013-11-22 06:50:45 +0100 |
|---|---|---|
| committer | Yan, Zheng | 2014-01-21 06:29:32 +0100 |
| commit | 9563f88c1fa01341d125e396edc654a8dbcab2d2 (patch) | |
| tree | 421b041c32cd218720bc1369b0abe1ce353d4547 /fs/ceph/caps.c | |
| parent | ceph: use ceph_seq_cmp() to compare migrate_seq (diff) | |
| download | kernel-qcow2-linux-9563f88c1fa01341d125e396edc654a8dbcab2d2.tar.gz kernel-qcow2-linux-9563f88c1fa01341d125e396edc654a8dbcab2d2.tar.xz kernel-qcow2-linux-9563f88c1fa01341d125e396edc654a8dbcab2d2.zip | |
ceph: fix cache revoke race
handle following sequence of events:
- non-auth MDS revokes Fc cap. queue invalidate work
- auth MDS issues Fc cap through request reply. i_rdcache_gen gets
increased.
- invalidate work runs. it finds i_rdcache_revoking != i_rdcache_gen,
so it does nothing.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Diffstat (limited to 'fs/ceph/caps.c')
| -rw-r--r-- | fs/ceph/caps.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 2c39d9fe18d7..d2154d63f671 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -816,7 +816,7 @@ int __ceph_caps_revoking_other(struct ceph_inode_info *ci, for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) { cap = rb_entry(p, struct ceph_cap, ci_node); - if (cap != ocap && __cap_is_valid(cap) && + if (cap != ocap && (cap->implemented & ~cap->issued & mask)) return 1; } |