From 07d400a6df4767a90d49a153fdb7f4cfa1e3f23e Mon Sep 17 00:00:00 2001
From: Yan Zheng <zheng.yan@oracle.com>
Date: Tue, 6 Jan 2009 11:42:00 -0500
Subject: [PATCH] Btrfs: tree logging checksum fixes

This patch contains following things.

1) Limit the max size of btrfs_ordered_sum structure to PAGE_SIZE.  This
struct is kmalloced so we want to keep it reasonable.

2) Replace copy_extent_csums by btrfs_lookup_csums_range.  This was
duplicated code in tree-log.c

3) Remove replay_one_csum. csum items are replayed at the same time as
   replaying file extents. This guarantees we only replay useful csums.

4) nbytes accounting fix.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
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