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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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7
drivers/message/fusion/mptctl.c
View file

@ -559,12 +559,6 @@ mptctl_fasync(int fd, struct file *filep, int mode)
return ret;
}
static int
mptctl_release(struct inode *inode, struct file *filep)
{
return fasync_helper(-1, filep, 0, &async_queue);
}
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* MPT ioctl handler
@ -2706,7 +2700,6 @@ mptctl_hp_targetinfo(unsigned long arg)
static const struct file_operations mptctl_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.release = mptctl_release,
.fasync = mptctl_fasync,
.unlocked_ioctl = mptctl_ioctl,
#ifdef CONFIG_COMPAT