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saner FASYNC handling on file close

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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>
This commit is contained in:
Al Viro 2008-10-31 23:28:30 +00:00 • committed by Linus Torvalds
parent 3318a386e4
commit 233e70f422
36 changed files with 13 additions and 109 deletions
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2
drivers/gpu/drm/drm_fops.c
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@ -406,8 +406,6 @@ int drm_release(struct inode *inode, struct file *filp)
if (dev->driver->driver_features & DRIVER_GEM)
drm_gem_release(dev, file_priv);
drm_fasync(-1, filp, 0);
mutex_lock(&dev->ctxlist_mutex);
if (!list_empty(&dev->ctxlist)) {
struct drm_ctx_list *pos, *n;