[PATCH] tmpfs double kunmap

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Found by Simon Trimmer <simon@veritas.com>: 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;
 }
 

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