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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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3
fs/btrfs/tree-defrag.c
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@@ -113,6 +113,8 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
}
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
clear_buffer_defrag(path->nodes[*level]);
clear_buffer_defrag_done(path->nodes[*level]);
btrfs_block_release(root, path->nodes[*level]);
path->nodes[*level] = NULL;
*level += 1;
@@ -143,6 +145,7 @@ static int defrag_walk_up(struct btrfs_trans_handle *trans,
return 0;
} else {
clear_buffer_defrag(path->nodes[*level]);
clear_buffer_defrag_done(path->nodes[*level]);
btrfs_block_release(root, path->nodes[*level]);
path->nodes[*level] = NULL;
*level = i + 1;