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path: root/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
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Diffstat (limited to 'drivers/staging/lustre/lustre/ldlm/ldlm_request.c')
-rw-r--r--drivers/staging/lustre/lustre/ldlm/ldlm_request.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
index ebfda36..84eeaa5 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_request.c
@@ -1029,13 +1029,23 @@ int ldlm_cli_cancel(const struct lustre_handle *lockh,
struct ldlm_lock *lock;
LIST_HEAD(cancels);
- /* concurrent cancels on the same handle can happen */
- lock = ldlm_handle2lock_long(lockh, LDLM_FL_CANCELING);
+ lock = ldlm_handle2lock_long(lockh, 0);
if (!lock) {
LDLM_DEBUG_NOLOCK("lock is already being destroyed");
return 0;
}
+ lock_res_and_lock(lock);
+ /* Lock is being canceled and the caller doesn't want to wait */
+ if (ldlm_is_canceling(lock) && (cancel_flags & LCF_ASYNC)) {
+ unlock_res_and_lock(lock);
+ LDLM_LOCK_RELEASE(lock);
+ return 0;
+ }
+
+ ldlm_set_canceling(lock);
+ unlock_res_and_lock(lock);
+
rc = ldlm_cli_cancel_local(lock);
if (rc == LDLM_FL_LOCAL_ONLY || cancel_flags & LCF_LOCAL) {
LDLM_LOCK_RELEASE(lock);
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