diff options
| author | anand <anekkunt@redhat.com> | 2015-04-17 14:19:46 +0530 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2015-04-28 01:53:28 -0700 |
| commit | ada6b3a8800867934af57a57d5312f5a5d8374f0 (patch) | |
| tree | e6e7c6fa2c22c00fd0dd62be86f460adb0c98c27 /xlators/mgmt/glusterd/src/glusterd-op-sm.c | |
| parent | d4889b2cfd29e6ecc911d2b29d1f85d516a66eaf (diff) | |
libglusterfs: Implementation of sync lock as recursive lock to avoid crash.
Problem : In glusterd,we are using big lock which is implemented based on sync
task frame work for thread synchronization and rcu lock for data consistency.
sync task frame work swap the threads if there is no worker poll threads
available,due to this rcu lock and rcu unlock was happening in different threads
(urcu-bp will not allow this),resulting into glusterd crash.
fix : To avoid releasing the sync lock(big lock) in between rcu critical
section,implemented sync lock as recursive lock.
More details:
link : http://www.spinics.net/lists/gluster-devel/msg14632.html
Change-Id: I2b56c1caf3f0470f219b1adcaf62cce29cdc6b88
BUG: 1211640
Signed-off-by: anand <anekkunt@redhat.com>
Reviewed-on: http://review.gluster.org/10285
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-op-sm.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-op-sm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c index 33df2c31d8a..42477ebf6cd 100644 --- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c +++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c @@ -6924,6 +6924,6 @@ int glusterd_op_sm_init () { CDS_INIT_LIST_HEAD (&gd_op_sm_queue); - synclock_init (&gd_op_sm_lock); + synclock_init (&gd_op_sm_lock, SYNC_LOCK_DEFAULT); return 0; } |