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procfs: return ENOENT on opening a being-removed proc entry 

Change the return value to ENOENT.  This return value is then returned
when opening the proc entry that have been removed.  For example,
open("/proc/bus/pci/XX/YY") when the corresponding device is being
hot-removed.

Signed-off-by: Daisuke Ogino <ogino.daisuke@jp.fujitsu.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daisuke Ogino 2011-07-26 16:08:37 -07:00 committed by Linus Torvalds
parent 5296f6d315
commit d2857e79a2
1 changed files with 1 additions and 1 deletions
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2
fs/proc/inode.c
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@ -319,7 +319,7 @@ static int proc_reg_open(struct inode *inode, struct file *file)
if (!pde->proc_fops) {
spin_unlock(&pde->pde_unload_lock);
kfree(pdeo);
return -EINVAL;
return -ENOENT;
}
pde->pde_users++;
open = pde->proc_fops->open;