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authorChangli Gao <xiaosuo@gmail.com>2010-05-07 14:33:26 +0800
committerIngo Molnar <mingo@elte.hu>2010-05-11 17:43:58 +0200
commita93d2f1744206827ccf416e2cdc5018aa503314e (patch)
treec4c9daf16536d8d58db275617e19898f6c5bdbd7 /fs/eventpoll.c
parentaf507ae8a0512a83728b17d8f8c5fa1561669f50 (diff)
downloadblackbird-op-linux-a93d2f1744206827ccf416e2cdc5018aa503314e.tar.gz
blackbird-op-linux-a93d2f1744206827ccf416e2cdc5018aa503314e.zip
sched, wait: Use wrapper functions
epoll should not touch flags in wait_queue_t. This patch introduces a new function __add_wait_queue_exclusive(), for the users, who use wait queue as a LIFO queue. __add_wait_queue_tail_exclusive() is introduced too instead of add_wait_queue_exclusive_locked(). remove_wait_queue_locked() is removed, as it is a duplicate of __remove_wait_queue(), disliked by users, and with less users. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Paul Menage <menage@google.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Davide Libenzi <davidel@xmailserver.org> Cc: <containers@lists.linux-foundation.org> LKML-Reference: <1273214006-2979-1-git-send-email-xiaosuo@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/eventpoll.c')
-rw-r--r--fs/eventpoll.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index bd056a5b4efc..3817149919cb 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1140,8 +1140,7 @@ retry:
* ep_poll_callback() when events will become available.
*/
init_waitqueue_entry(&wait, current);
- wait.flags |= WQ_FLAG_EXCLUSIVE;
- __add_wait_queue(&ep->wq, &wait);
+ __add_wait_queue_exclusive(&ep->wq, &wait);
for (;;) {
/*
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