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orangefs_clean_up_interrupted_operation: call with op->lock held

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
This commit is contained in:
Al Viro 2016-01-23 13:09:05 -05:00 committed by Mike Marshall
parent 70c6ea26ff
commit eab9b38939
1 changed files with 4 additions and 32 deletions
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36
fs/orangefs/waitqueue.c
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@ -279,35 +279,8 @@ static void orangefs_clean_up_interrupted_operation(struct orangefs_kernel_op_s
* the interruption is detected. there is a coarse grained lock
* across the operation.
*
* NOTE: be sure not to reverse lock ordering by locking an op lock
* while holding the request_list lock. Here, we first lock the op
* and then lock the appropriate list.
* Called with op->lock held.
*/
if (!op) {
gossip_debug(GOSSIP_WAIT_DEBUG,
"%s: op is null, ignoring\n",
__func__);
return;
}
/*
* one more sanity check, make sure it's in one of the possible states
* or don't try to cancel it
*/
if (!(op_state_waiting(op) ||
op_state_in_progress(op) ||
op_state_serviced(op) ||
op_state_purged(op))) {
gossip_debug(GOSSIP_WAIT_DEBUG,
"%s: op %p not in a valid state (%0x), "
"ignoring\n",
__func__,
op,
op->op_state);
return;
}
spin_lock(&op->lock);
op->op_state |= OP_VFS_STATE_GIVEN_UP;
if (op_state_waiting(op)) {
@ -374,7 +347,6 @@ static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op)
ret = 0;
break;
}
spin_unlock(&op->lock);
if (unlikely(signal_pending(current))) {
gossip_debug(GOSSIP_WAIT_DEBUG,
@ -394,7 +366,6 @@ static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op)
* has not purged our operation, we are happy to
* simply wait
*/
spin_lock(&op->lock);
if (op->attempts == 0 && !op_state_purged(op)) {
spin_unlock(&op->lock);
schedule();
@ -415,6 +386,7 @@ static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op)
op,
op->attempts);
ret = -ETIMEDOUT;
spin_lock(&op->lock);
orangefs_clean_up_interrupted_operation(op);
break;
}
@ -434,7 +406,6 @@ static int wait_for_matching_downcall(struct orangefs_kernel_op_s *op)
ret = (op->attempts < ORANGEFS_PURGE_RETRY_COUNT) ?
-EAGAIN :
-EIO;
spin_unlock(&op->lock);
gossip_debug(GOSSIP_WAIT_DEBUG,
"*** %s:"
" operation purged (tag "
@ -481,7 +452,6 @@ static int wait_for_cancellation_downcall(struct orangefs_kernel_op_s *op)
ret = 0;
break;
}
spin_unlock(&op->lock);
if (signal_pending(current)) {
gossip_debug(GOSSIP_WAIT_DEBUG,
@ -498,6 +468,7 @@ static int wait_for_cancellation_downcall(struct orangefs_kernel_op_s *op)
gossip_debug(GOSSIP_WAIT_DEBUG,
"%s:About to call schedule_timeout.\n",
__func__);
spin_unlock(&op->lock);
ret =
schedule_timeout(MSECS_TO_JIFFIES(1000 * op_timeout_secs));
@ -510,6 +481,7 @@ static int wait_for_cancellation_downcall(struct orangefs_kernel_op_s *op)
"%s:*** operation timed out: %p\n",
__func__,
op);
spin_lock(&op->lock);
orangefs_clean_up_interrupted_operation(op);
ret = -ETIMEDOUT;
break;