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authorChris Mason <chris.mason@oracle.com>2007-08-10 14:06:19 -0400
committerDavid Woodhouse <dwmw2@hera.kernel.org>2007-08-10 14:06:19 -0400
commite9d0b13b5bbb58c9b840e407a8d181442f799966 (patch)
treed51a7e111a824e883c347c83745109400231de1c /fs/btrfs/tree-defrag.c
parent409eb95d7f6632d5af32b795244ce68a29e49319 (diff)
downloadlinux-e9d0b13b5bbb58c9b840e407a8d181442f799966.tar.bz2
Btrfs: Btree defrag on the extent-mapping tree as well
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/tree-defrag.c')
-rw-r--r--fs/btrfs/tree-defrag.c36
1 files changed, 29 insertions, 7 deletions
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 7ea66b4aa5c2..a09064a9a41c 100644
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -42,16 +42,20 @@ static void reada_defrag(struct btrfs_root *root,
static int defrag_walk_down(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path, int *level,
- int cache_only)
+ int cache_only, u64 *last_ret)
{
struct buffer_head *next;
struct buffer_head *cur;
u64 blocknr;
int ret = 0;
+ int is_extent = 0;
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
+ if (root->fs_info->extent_root == root)
+ is_extent = 1;
+
while(*level > 0) {
WARN_ON(*level < 0);
WARN_ON(*level >= BTRFS_MAX_LEVEL);
@@ -70,7 +74,10 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
if (*level == 1) {
ret = btrfs_realloc_node(trans, root,
path->nodes[*level],
- cache_only);
+ cache_only, last_ret);
+ if (is_extent)
+ btrfs_extent_post_op(trans, root);
+
break;
}
blocknr = btrfs_node_blockptr(btrfs_buffer_node(cur),
@@ -90,8 +97,13 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
ret = btrfs_cow_block(trans, root, next, path->nodes[*level],
path->slots[*level], &next);
BUG_ON(ret);
- ret = btrfs_realloc_node(trans, root, next, cache_only);
+ ret = btrfs_realloc_node(trans, root, next, cache_only,
+ last_ret);
BUG_ON(ret);
+
+ if (is_extent)
+ btrfs_extent_post_op(trans, root);
+
WARN_ON(*level <= 0);
if (path->nodes[*level-1])
btrfs_block_release(root, path->nodes[*level-1]);
@@ -148,10 +160,14 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
int level;
int orig_level;
int i;
+ int is_extent = 0;
+ u64 last_ret = 0;
+
+ if (root->fs_info->extent_root == root)
+ is_extent = 1;
- if (root->ref_cows == 0) {
+ if (root->ref_cows == 0 && !is_extent)
goto out;
- }
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@@ -165,16 +181,21 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
get_bh(root->node);
ret = btrfs_cow_block(trans, root, root->node, NULL, 0, &tmp);
BUG_ON(ret);
- ret = btrfs_realloc_node(trans, root, root->node, cache_only);
+ ret = btrfs_realloc_node(trans, root, root->node, cache_only,
+ &last_ret);
BUG_ON(ret);
path->nodes[level] = root->node;
path->slots[level] = 0;
+ if (is_extent)
+ btrfs_extent_post_op(trans, root);
} else {
level = root->defrag_level;
path->lowest_level = level;
wret = btrfs_search_slot(trans, root, &root->defrag_progress,
path, 0, 1);
+ if (is_extent)
+ btrfs_extent_post_op(trans, root);
if (wret < 0) {
ret = wret;
goto out;
@@ -188,7 +209,8 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
}
while(1) {
- wret = defrag_walk_down(trans, root, path, &level, cache_only);
+ wret = defrag_walk_down(trans, root, path, &level, cache_only,
+ &last_ret);
if (wret > 0)
break;
if (wret < 0)