btrfs: remove cache only arguments from defrag path
The entry point at the defrag ioctl always sets "cache only" to 0;
the codepaths haven't run for a long time as far as I can
tell. Chris says they're dead code, so remove them.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 3544401..ecd25a1 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1442,7 +1442,7 @@
*/
int btrfs_realloc_node(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *parent,
- int start_slot, int cache_only, u64 *last_ret,
+ int start_slot, u64 *last_ret,
struct btrfs_key *progress)
{
struct extent_buffer *cur;
@@ -1462,8 +1462,6 @@
struct btrfs_disk_key disk_key;
parent_level = btrfs_header_level(parent);
- if (cache_only && parent_level != 1)
- return 0;
WARN_ON(trans->transaction != root->fs_info->running_transaction);
WARN_ON(trans->transid != root->fs_info->generation);
@@ -1509,10 +1507,6 @@
else
uptodate = 0;
if (!cur || !uptodate) {
- if (cache_only) {
- free_extent_buffer(cur);
- continue;
- }
if (!cur) {
cur = read_tree_block(root, blocknr,
blocksize, gen);
@@ -4826,8 +4820,8 @@
/*
* A helper function to walk down the tree starting at min_key, and looking
- * for nodes or leaves that are either in cache or have a minimum
- * transaction id. This is used by the btree defrag code, and tree logging
+ * for nodes or leaves that are have a minimum transaction id.
+ * This is used by the btree defrag code, and tree logging
*
* This does not cow, but it does stuff the starting key it finds back
* into min_key, so you can call btrfs_search_slot with cow=1 on the
@@ -4848,7 +4842,7 @@
*/
int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key,
struct btrfs_key *max_key,
- struct btrfs_path *path, int cache_only,
+ struct btrfs_path *path,
u64 min_trans)
{
struct extent_buffer *cur;
@@ -4888,15 +4882,12 @@
if (sret && slot > 0)
slot--;
/*
- * check this node pointer against the cache_only and
- * min_trans parameters. If it isn't in cache or is too
- * old, skip to the next one.
+ * check this node pointer against the min_trans parameters.
+ * If it is too old, old, skip to the next one.
*/
while (slot < nritems) {
u64 blockptr;
u64 gen;
- struct extent_buffer *tmp;
- struct btrfs_disk_key disk_key;
blockptr = btrfs_node_blockptr(cur, slot);
gen = btrfs_node_ptr_generation(cur, slot);
@@ -4904,27 +4895,7 @@
slot++;
continue;
}
- if (!cache_only)
- break;
-
- if (max_key) {
- btrfs_node_key(cur, &disk_key, slot);
- if (comp_keys(&disk_key, max_key) >= 0) {
- ret = 1;
- goto out;
- }
- }
-
- tmp = btrfs_find_tree_block(root, blockptr,
- btrfs_level_size(root, level - 1));
-
- if (tmp && btrfs_buffer_uptodate(tmp, gen, 1) > 0) {
- free_extent_buffer(tmp);
- break;
- }
- if (tmp)
- free_extent_buffer(tmp);
- slot++;
+ break;
}
find_next_key:
/*
@@ -4935,7 +4906,7 @@
path->slots[level] = slot;
btrfs_set_path_blocking(path);
sret = btrfs_find_next_key(root, path, min_key, level,
- cache_only, min_trans);
+ min_trans);
if (sret == 0) {
btrfs_release_path(path);
goto again;
@@ -5400,8 +5371,7 @@
/*
* this is similar to btrfs_next_leaf, but does not try to preserve
* and fixup the path. It looks for and returns the next key in the
- * tree based on the current path and the cache_only and min_trans
- * parameters.
+ * tree based on the current path and the min_trans parameters.
*
* 0 is returned if another key is found, < 0 if there are any errors
* and 1 is returned if there are no higher keys in the tree
@@ -5410,8 +5380,7 @@
* calling this function.
*/
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
- struct btrfs_key *key, int level,
- int cache_only, u64 min_trans)
+ struct btrfs_key *key, int level, u64 min_trans)
{
int slot;
struct extent_buffer *c;
@@ -5462,22 +5431,8 @@
if (level == 0)
btrfs_item_key_to_cpu(c, key, slot);
else {
- u64 blockptr = btrfs_node_blockptr(c, slot);
u64 gen = btrfs_node_ptr_generation(c, slot);
- if (cache_only) {
- struct extent_buffer *cur;
- cur = btrfs_find_tree_block(root, blockptr,
- btrfs_level_size(root, level - 1));
- if (!cur ||
- btrfs_buffer_uptodate(cur, gen, 1) <= 0) {
- slot++;
- if (cur)
- free_extent_buffer(cur);
- goto next;
- }
- free_extent_buffer(cur);
- }
if (gen < min_trans) {
slot++;
goto next;