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>
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index f5233f3..b89f476 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -559,12 +559,6 @@
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 @@
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
diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
index a3fabdb..f3384c3 100644
--- a/drivers/message/i2o/i2o_config.c
+++ b/drivers/message/i2o/i2o_config.c
@@ -1097,28 +1097,17 @@
static int cfg_release(struct inode *inode, struct file *file)
{
ulong id = (ulong) file->private_data;
- struct i2o_cfg_info *p1, *p2;
+ struct i2o_cfg_info *p, **q;
unsigned long flags;
lock_kernel();
- p1 = p2 = NULL;
-
spin_lock_irqsave(&i2o_config_lock, flags);
- for (p1 = open_files; p1;) {
- if (p1->q_id == id) {
-
- if (p1->fasync)
- cfg_fasync(-1, file, 0);
- if (p2)
- p2->next = p1->next;
- else
- open_files = p1->next;
-
- kfree(p1);
+ for (q = &open_files; (p = *q) != NULL; q = &p->next) {
+ if (p->q_id == id) {
+ *q = p->next;
+ kfree(p);
break;
}
- p2 = p1;
- p1 = p1->next;
}
spin_unlock_irqrestore(&i2o_config_lock, flags);
unlock_kernel();