vfs: do bulk POLL* -> EPOLL* replacement

This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 13b35ffa021e..670e99b68aa6 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3688,7 +3688,7 @@ static void memcg_event_remove(struct work_struct *work)
 }
 
 /*
- * Gets called on POLLHUP on eventfd when user closes it.
+ * Gets called on EPOLLHUP on eventfd when user closes it.
  *
  * Called with wqh->lock held and interrupts disabled.
  */
@@ -3700,7 +3700,7 @@ static int memcg_event_wake(wait_queue_entry_t *wait, unsigned mode,
 	struct mem_cgroup *memcg = event->memcg;
 	__poll_t flags = key_to_poll(key);
 
-	if (flags & POLLHUP) {
+	if (flags & EPOLLHUP) {
 		/*
 		 * If the event has been detached at cgroup removal, we
 		 * can simply return knowing the other side will cleanup