epoll keyed wakeups: make eventfd use keyed wakeups
Introduce keyed event wakeups inside the eventfd code.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: William Lee Irwin III <wli@movementarian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/eventfd.c b/fs/eventfd.c
index 91c0829..2a701d5 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -51,7 +51,7 @@
n = (int) (ULLONG_MAX - ctx->count);
ctx->count += n;
if (waitqueue_active(&ctx->wqh))
- wake_up_locked(&ctx->wqh);
+ wake_up_locked_poll(&ctx->wqh, POLLIN);
spin_unlock_irqrestore(&ctx->wqh.lock, flags);
return n;
@@ -120,7 +120,7 @@
ucnt = (ctx->flags & EFD_SEMAPHORE) ? 1 : ctx->count;
ctx->count -= ucnt;
if (waitqueue_active(&ctx->wqh))
- wake_up_locked(&ctx->wqh);
+ wake_up_locked_poll(&ctx->wqh, POLLOUT);
}
spin_unlock_irq(&ctx->wqh.lock);
if (res > 0 && put_user(ucnt, (__u64 __user *) buf))
@@ -169,7 +169,7 @@
if (likely(res > 0)) {
ctx->count += ucnt;
if (waitqueue_active(&ctx->wqh))
- wake_up_locked(&ctx->wqh);
+ wake_up_locked_poll(&ctx->wqh, POLLIN);
}
spin_unlock_irq(&ctx->wqh.lock);