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fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
[linux-2.6-block.git]
/
fs
/
super.c
diff --git
a/fs/super.c
b/fs/super.c
index 928c20f47af9c1e26906e7e3be7dfa7705e8ca15..b61372354f2bd1cd104d140003859a4333456c79 100644
(file)
--- a/
fs/super.c
+++ b/
fs/super.c
@@
-842,7
+842,7
@@
int get_anon_bdev(dev_t *p)
else if (error)
return -EAGAIN;
- if (dev
=
= (1 << MINORBITS)) {
+ if (dev
>
= (1 << MINORBITS)) {
spin_lock(&unnamed_dev_lock);
ida_remove(&unnamed_dev_ida, dev);
if (unnamed_dev_start > dev)