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[PATCH] igrab() should check for I_CLEAR

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When igrab() is calling __iget() on an inode it should check if
clear_inode() has been called on the inode already.  Otherwise there is a
race window between clear_inode() and destroy_inode() where igrab() calls
__iget() which leads to already free inodes on the inode lists.

Signed-off-by: Vandana Rungta <vandana@novell.com>
Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Blunck 2007-02-10 01:44:59 -08:00 committed by Linus Torvalds
parent 068135e635
commit 4a3b0a490d
1 changed files with 1 additions and 1 deletions
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2
fs/inode.c
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@ -709,7 +709,7 @@ EXPORT_SYMBOL(iunique);
struct inode *igrab(struct inode *inode)
{
spin_lock(&inode_lock);
if (!(inode->i_state & (I_FREEING|I_WILL_FREE)))
if (!(inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)))
__iget(inode);
else
/*