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authorChristoph Hellwig <hch@lst.de>2018-03-05 18:26:05 +0300
committerChristoph Hellwig <hch@lst.de>2018-05-26 10:16:44 +0300
commit9965ed174e7d38896e5d2582159d8ef31ecd4cb5 (patch)
tree955bfa805fff87c169a4814deaf311b90cca84b2 /fs/eventpoll.c
parent6e8b704df58407aad7607053cb1b5ead4ac4a0bc (diff)
downloadlinux-9965ed174e7d38896e5d2582159d8ef31ecd4cb5.tar.xz
fs: add new vfs_poll and file_can_poll helpers
These abstract out calls to the poll method in preparation for changes in how we poll. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/eventpoll.c')
-rw-r--r--fs/eventpoll.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 602ca4285b2e..67db22fe99c5 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -884,8 +884,7 @@ static __poll_t ep_item_poll(const struct epitem *epi, poll_table *pt,
pt->_key = epi->event.events;
if (!is_file_epoll(epi->ffd.file))
- return epi->ffd.file->f_op->poll(epi->ffd.file, pt) &
- epi->event.events;
+ return vfs_poll(epi->ffd.file, pt) & epi->event.events;
ep = epi->ffd.file->private_data;
poll_wait(epi->ffd.file, &ep->poll_wait, pt);
@@ -2025,7 +2024,7 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd,
/* The target file descriptor must support poll */
error = -EPERM;
- if (!tf.file->f_op->poll)
+ if (!file_can_poll(tf.file))
goto error_tgt_fput;
/* Check if EPOLLWAKEUP is allowed */