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dlm: rearrange async condition return

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[ Upstream commit a800ba77fd ]

This patch moves the return of FILE_LOCK_DEFERRED a little bit earlier
than checking afterwards again if the request was an asynchronous request.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Stable-dep-of: 59e45c758c ("fs: dlm: interrupt posix locks only when process is killed")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alexander Aring 2022-04-04 16:06:33 -04:00 committed by Greg Kroah-Hartman
parent c07c14b4dd
commit 66cf508de1
1 changed files with 13 additions and 14 deletions
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27
fs/dlm/plock.c
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@ -152,26 +152,25 @@ int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
op_data->file = file;
op->data = op_data;
send_op(op);
rv = FILE_LOCK_DEFERRED;
goto out;
} else {
op->info.owner = (__u64)(long) fl->fl_owner;
}
send_op(op);
if (!op->data) {
rv = wait_event_interruptible(recv_wq, (op->done != 0));
if (rv == -ERESTARTSYS) {
log_debug(ls, "dlm_posix_lock: wait killed %llx",
(unsigned long long)number);
spin_lock(&ops_lock);
list_del(&op->list);
spin_unlock(&ops_lock);
dlm_release_plock_op(op);
do_unlock_close(ls, number, file, fl);
goto out;
}
} else {
rv = FILE_LOCK_DEFERRED;
rv = wait_event_interruptible(recv_wq, (op->done != 0));
if (rv == -ERESTARTSYS) {
log_debug(ls, "%s: wait killed %llx", __func__,
(unsigned long long)number);
spin_lock(&ops_lock);
list_del(&op->list);
spin_unlock(&ops_lock);
dlm_release_plock_op(op);
do_unlock_close(ls, number, file, fl);
goto out;
}