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Add support for defragging files via btrfsctl -d. Avoid OOM on extent tree

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defrag.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-09-10 19:58:16 -04:00
committed by David Woodhouse
parent 8e21528f87
commit 86479a04ee
5 changed files with 100 additions and 18 deletions
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4
fs/btrfs/ctree.c
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@@ -217,6 +217,9 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
root->fs_info->generation);
WARN_ON(1);
}
if (buffer_defrag_done(parent))
return 0;
parent_node = btrfs_buffer_node(parent);
parent_nritems = btrfs_header_nritems(&parent_node->header);
parent_level = btrfs_header_level(&parent_node->header);
@@ -274,6 +277,7 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
*last_ret = search_start;
if (parent_level == 1)
clear_buffer_defrag(tmp_bh);
set_buffer_defrag_done(tmp_bh);
brelse(tmp_bh);
}
return err;