From 9ab86c8e01c3f298dba0cbf2502c635b7f6fc6f9 Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Wed, 7 Jan 2009 09:48:51 -0500
Subject: [PATCH] Btrfs: kmap_atomic(KM_USER0) is safe for
 btrfs_readpage_end_io_hook

None of the checksum verification code schedules, so we can use the faster
kmap_atomic

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Reading git-format-patch failed