From d2857e79a2ba7c155eaa1a7d3581c8d26b31e54e Mon Sep 17 00:00:00 2001
From: Daisuke Ogino <ogino.daisuke@jp.fujitsu.com>
Date: Tue, 26 Jul 2011 16:08:37 -0700
Subject: [PATCH] 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>
---
fs/proc/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 74b48cfa1bb2..7ed72d6c1c6f 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -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;
--
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