diff options
| author | Hongchao Zhang <hongchao.zhang@intel.com> | 2015-02-01 21:52:04 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-07 17:31:10 +0800 |
| commit | 62e4941354c38c968474a909a5a89395ccff0067 (patch) | |
| tree | 77df4e20b8318cf62f522d6b665bedd1948d9639 /drivers/staging | |
| parent | 2661e6c45625abd32d6447cafb8d9b99839ce408 (diff) | |
| download | linux-62e4941354c38c968474a909a5a89395ccff0067.tar.bz2 | |
staging/lustre/obdclass: fix a race in recovery
in "class_export_recovery_cleanup", the check of the flag
"exp->exp_req_replay_needed" should be protected by "exp_lock".
Signed-off-by: Hongchao Zhang <hongchao.zhang@intel.com>
Reviewed-on: http://review.whamcloud.com/10849
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5128
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/lustre/lustre/obdclass/genops.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c index 736ca410aca3..82508210465e 100644 --- a/drivers/staging/lustre/lustre/obdclass/genops.c +++ b/drivers/staging/lustre/lustre/obdclass/genops.c @@ -1151,22 +1151,24 @@ void class_export_recovery_cleanup(struct obd_export *exp) exp->exp_obd->obd_stale_clients++; } spin_unlock(&obd->obd_recovery_task_lock); + + spin_lock(&exp->exp_lock); /** Cleanup req replay fields */ if (exp->exp_req_replay_needed) { - spin_lock(&exp->exp_lock); exp->exp_req_replay_needed = 0; - spin_unlock(&exp->exp_lock); + LASSERT(atomic_read(&obd->obd_req_replay_clients)); atomic_dec(&obd->obd_req_replay_clients); } + /** Cleanup lock replay data */ if (exp->exp_lock_replay_needed) { - spin_lock(&exp->exp_lock); exp->exp_lock_replay_needed = 0; - spin_unlock(&exp->exp_lock); + LASSERT(atomic_read(&obd->obd_lock_replay_clients)); atomic_dec(&obd->obd_lock_replay_clients); } + spin_unlock(&exp->exp_lock); } /* This function removes 1-3 references from the export: |