diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/ldlm/ldlm_flock.c')
-rw-r--r-- | drivers/staging/lustre/lustre/ldlm/ldlm_flock.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c index b88b78606aee..349bfcc9b331 100644 --- a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c +++ b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c @@ -101,8 +101,7 @@ ldlm_flock_destroy(struct ldlm_lock *lock, enum ldlm_mode mode, __u64 flags) LASSERT(hlist_unhashed(&lock->l_exp_flock_hash)); list_del_init(&lock->l_res_link); - if (flags == LDLM_FL_WAIT_NOREPROC && - !(lock->l_flags & LDLM_FL_FAILED)) { + if (flags == LDLM_FL_WAIT_NOREPROC && !ldlm_is_failed(lock)) { /* client side - set a flag to prevent sending a CANCEL */ lock->l_flags |= LDLM_FL_LOCAL_ONLY | LDLM_FL_CBPENDING; @@ -436,7 +435,7 @@ ldlm_flock_interrupted_wait(void *data) lock_res_and_lock(lock); /* client side - set flag to prevent lock from being put on LRU list */ - lock->l_flags |= LDLM_FL_CBPENDING; + ldlm_set_cbpending(lock); unlock_res_and_lock(lock); } @@ -520,30 +519,29 @@ ldlm_flock_completion_ast(struct ldlm_lock *lock, __u64 flags, void *data) granted: OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_CP_CB_WAIT, 10); - if (lock->l_flags & LDLM_FL_DESTROYED) { - LDLM_DEBUG(lock, "client-side enqueue waking up: destroyed"); - return 0; - } - - if (lock->l_flags & LDLM_FL_FAILED) { + if (ldlm_is_failed(lock)) { LDLM_DEBUG(lock, "client-side enqueue waking up: failed"); return -EIO; } - if (rc) { - LDLM_DEBUG(lock, "client-side enqueue waking up: failed (%d)", - rc); - return rc; - } - LDLM_DEBUG(lock, "client-side enqueue granted"); lock_res_and_lock(lock); + /* + * Protect against race where lock could have been just destroyed + * due to overlap in ldlm_process_flock_lock(). + */ + if (ldlm_is_destroyed(lock)) { + unlock_res_and_lock(lock); + LDLM_DEBUG(lock, "client-side enqueue waking up: destroyed"); + return 0; + } + /* ldlm_lock_enqueue() has already placed lock on the granted list. */ list_del_init(&lock->l_res_link); - if (lock->l_flags & LDLM_FL_FLOCK_DEADLOCK) { + if (ldlm_is_flock_deadlock(lock)) { LDLM_DEBUG(lock, "client-side enqueue deadlock received"); rc = -EDEADLK; } else if (flags & LDLM_FL_TEST_LOCK) { |