tree 61d7a0fb45a279b10439caaa323373ba6f5729a0
parent 0f3c5aab5e00527eb3167aa9d1725cca9320e01e
author Davidlohr Bueso <dave@stgolabs.net> 1423867148 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1423891300 -0800

epoll: optimize setting task running after blocking

After waking up a task waiting for an event, we explicitly mark it as
TASK_RUNNING (which is necessary as we do the checks for wakeups as
TASK_INTERRUPTIBLE).  Once running and dealing with actually delivering
the events, we're obviously not planning on calling schedule, thus we can
relax the implied barrier and simply update the state with
__set_current_state().

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>