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, 2 deletions

diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index d85af1b67027..eb36a81dd09b 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -358,8 +358,6 @@ static int ib_uverbs_event_close(struct inode *inode, struct file *filp)
         }
         spin_unlock_irq(&file->lock);
 
-        ib_uverbs_event_fasync(-1, filp, 0);
-
         if (file->is_async) {
                 ib_unregister_event_handler(&file->uverbs_file->event_handler);
                 kref_put(&file->uverbs_file->ref, ib_uverbs_release_file);