@@ -598,7 +598,7 @@ static noinline int insert_extent_data_ref(struct btrfs_trans_handle *trans,
static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
- int refs_to_drop, int *last_ref)
+ int refs_to_drop)
{
struct btrfs_key key;
struct btrfs_extent_data_ref *ref1 = NULL;
@@ -631,7 +631,6 @@ static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans,
if (num_refs == 0) {
ret = btrfs_del_item(trans, root, path);
- *last_ref = 1;
} else {
if (key.type == BTRFS_EXTENT_DATA_REF_KEY)
btrfs_set_extent_data_ref_count(leaf, ref1, num_refs);
@@ -1072,8 +1071,7 @@ static noinline_for_stack
void update_inline_extent_backref(struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
int refs_to_mod,
- struct btrfs_delayed_extent_op *extent_op,
- int *last_ref)
+ struct btrfs_delayed_extent_op *extent_op)
{
struct extent_buffer *leaf = path->nodes[0];
struct btrfs_extent_item *ei;
@@ -1121,7 +1119,6 @@ void update_inline_extent_backref(struct btrfs_path *path,
else
btrfs_set_shared_data_ref_count(leaf, sref, refs);
} else {
- *last_ref = 1;
size = btrfs_extent_inline_ref_size(type);
item_size = btrfs_item_size(leaf, path->slots[0]);
ptr = (unsigned long)iref;
@@ -1167,7 +1164,7 @@ int insert_inline_extent_backref(struct btrfs_trans_handle *trans,
return -EUCLEAN;
}
update_inline_extent_backref(path, iref, refs_to_add,
- extent_op, NULL);
+ extent_op);
} else if (ret == -ENOENT) {
setup_inline_extent_backref(trans->fs_info, path, iref, parent,
root_objectid, owner, offset,
@@ -1181,21 +1178,17 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
- int refs_to_drop, int is_data, int *last_ref)
+ int refs_to_drop, int is_data)
{
int ret = 0;
BUG_ON(!is_data && refs_to_drop != 1);
- if (iref) {
- update_inline_extent_backref(path, iref, -refs_to_drop, NULL,
- last_ref);
- } else if (is_data) {
- ret = remove_extent_data_ref(trans, root, path, refs_to_drop,
- last_ref);
- } else {
- *last_ref = 1;
+ if (iref)
+ update_inline_extent_backref(path, iref, -refs_to_drop, NULL);
+ else if (is_data)
+ ret = remove_extent_data_ref(trans, root, path, refs_to_drop);
+ else
ret = btrfs_del_item(trans, root, path);
- }
return ret;
}
@@ -2942,7 +2935,6 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
u64 refs;
u64 bytenr = node->bytenr;
u64 num_bytes = node->num_bytes;
- int last_ref = 0;
bool skinny_metadata = btrfs_fs_incompat(info, SKINNY_METADATA);
extent_root = btrfs_extent_root(info, bytenr);
@@ -3009,8 +3001,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
}
/* Must be SHARED_* item, remove the backref first */
ret = remove_extent_backref(trans, extent_root, path,
- NULL, refs_to_drop, is_data,
- &last_ref);
+ NULL, refs_to_drop, is_data);
if (ret) {
btrfs_abort_transaction(trans, ret);
goto out;
@@ -3135,8 +3126,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
}
if (found_extent) {
ret = remove_extent_backref(trans, extent_root, path,
- iref, refs_to_drop, is_data,
- &last_ref);
+ iref, refs_to_drop, is_data);
if (ret) {
btrfs_abort_transaction(trans, ret);
goto out;
@@ -3181,7 +3171,6 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
}
}
- last_ref = 1;
ret = btrfs_del_items(trans, extent_root, path, path->slots[0],
num_to_del);
if (ret) {
This is a remnant of the work I did for qgroups a long time ago to only run for a block when we had dropped the last ref. We haven't done that for years, but the code remains. Drop this remnant. Signed-off-by: Josef Bacik <josef@toxicpanda.com> --- fs/btrfs/extent-tree.c | 33 +++++++++++---------------------- 1 file changed, 11 insertions(+), 22 deletions(-)