saner FASYNC handling on file close

As it is, all instances of ->release() for files that have ->fasync()
need to remember to evict file from fasync lists; forgetting that
creates a hole and we actually have a bunch that *does* forget.

So let's keep our lives simple - let __fput() check FASYNC in
file->f_flags and call ->fasync() there if it's been set.  And lose that
crap in ->release() instances - leaving it there is still valid, but we
don't have to bother anymore.

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

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index f9b4647255aa..2d2440cd57a9 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -367,9 +367,6 @@ static int uio_release(struct inode *inode, struct file *filep)
                 ret = idev->info->release(idev->info, inode);
 
         module_put(idev->owner);
-
-        if (filep->f_flags & FASYNC)
-                ret = uio_fasync(-1, filep, 0);
         kfree(listener);
         return ret;
 }