[patch] fix inode leak in xfs_iget_core()

[David Chinner <dgc@xxxxxxx>]

If the radix_tree_preload() fails, we need to destroy the
inode we just read in before trying again. This could leak
xfs_vnode structures when there is memory pressure. Noticed
by Christoph Hellwig.

Signed-off-by: Dave Chinner <dgc@xxxxxxx>
---
 fs/xfs/xfs_iget.c |    1 +
 1 file changed, 1 insertion(+)

Index: 2.6.x-xfs-new/fs/xfs/xfs_iget.c
===================================================================
--- 2.6.x-xfs-new.orig/fs/xfs/xfs_iget.c        2008-02-15 19:27:02.000000000 
+1100
+++ 2.6.x-xfs-new/fs/xfs/xfs_iget.c     2008-02-23 16:51:31.602711856 +1100
@@ -232,6 +232,7 @@ finish_inode:
         * write spinlock.
         */
        if (radix_tree_preload(GFP_KERNEL)) {
+               xfs_idestroy(ip);
                delay(1);
                goto again;
        }