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Btrfs: tree logging checksum fixes

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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>
This commit is contained in:
Yan Zheng
2009-01-06 11:42:00 -05:00
committed by Chris Mason
parent 1ba12553f3
commit 07d400a6df
4 changed files with 130 additions and 232 deletions
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5
fs/btrfs/inode.c
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@@ -157,7 +157,6 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans,
key.objectid = inode->i_ino;
key.offset = start;
btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);
inode_add_bytes(inode, size);
datasize = btrfs_file_extent_calc_inline_size(cur_size);
inode_add_bytes(inode, size);
@@ -920,8 +919,8 @@ static noinline int csum_exist_in_range(struct btrfs_root *root,
struct btrfs_ordered_sum *sums;
LIST_HEAD(list);
ret = btrfs_lookup_csums_range(root, bytenr, bytenr + num_bytes - 1,
&list);
ret = btrfs_lookup_csums_range(root->fs_info->csum_root, bytenr,
bytenr + num_bytes - 1, &list);
if (ret == 0 && list_empty(&list))
return 0;