[PATCH] tmpfs double kunmap

[Hugh Dickins]

Found by Simon Trimmer <[e-mail]>: shmem_file_write
failure path duplicates kunmap, causing oops holding kmap_lock.

Patch against 2.4.19-rc1, applies at offset to 2.4.19-rc1-ac3,
applies at offset to 2.5.25 but I'll send Linus and Dave later.

--- 2.4.19-rc1/mm/shmem.c	Mon Jun 24 19:14:58 2002
+++ linux/mm/shmem.c	Mon Jul 15 12:28:47 2002
@@ -906,7 +906,6 @@
 fail_write:
 	status = -EFAULT;
 	ClearPageUptodate(page);
-	kunmap(page);
 	goto unlock;
 }