diff options
| author | Yan, Zheng <zheng.z.yan@intel.com> | 2014-04-21 15:46:37 +0800 |
|---|---|---|
| committer | Yan, Zheng <zheng.z.yan@intel.com> | 2014-06-06 09:29:55 +0800 |
| commit | ca665e0282ece4f8121ab4de474351f291fa8c2d (patch) | |
| tree | d2ad463509ad678de715e5f5d568de2c8bb03374 /fs | |
| parent | 8d08503c130e96e3794f66fe47053051460b1584 (diff) | |
| download | linux-ca665e0282ece4f8121ab4de474351f291fa8c2d.tar.gz linux-ca665e0282ece4f8121ab4de474351f291fa8c2d.tar.bz2 linux-ca665e0282ece4f8121ab4de474351f291fa8c2d.zip | |
mds: check cap ID when handling cap export message
handle following sequence of events:
- mds0 exports an inode to mds1. client receives the cap import
message from mds1. caps from mds0 are removed while handling
the cap import message.
- mds1 exports an inode to mds0. client receives the cap export
message from mds1. handle_cap_export() adds placeholder caps
for mds0
- client receives the first cap export message (for exporting
inode from mds0 to mds1)
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Diffstat (limited to 'fs')
| -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 9f2c99c34e92..1fde164b74b5 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2805,7 +2805,7 @@ static void handle_cap_export(struct inode *inode, struct ceph_mds_caps *ex, retry: spin_lock(&ci->i_ceph_lock); cap = __get_cap_for_mds(ci, mds); - if (!cap) + if (!cap || cap->cap_id != le64_to_cpu(ex->cap_id)) goto out_unlock; if (target < 0) { |