btrfs: Remove unused arguments from btrfs_changed_cb_t
btrfs_changed_cb_t represents the signature of the callback being passed
to btrfs_compare_trees. Currently there is only one such callback,
namely changed_cb in send.c. This function doesn't really uses the first
2 parameters, i.e. the roots. Since there are not other functions
implementing the btrfs_changed_cb_t let's remove the unused parameters
from the prototype and implementation.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 6d49db7..19b9c51 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -5496,8 +5496,7 @@
goto out;
} else if (left_end_reached) {
if (right_level == 0) {
- ret = changed_cb(left_root, right_root,
- left_path, right_path,
+ ret = changed_cb(left_path, right_path,
&right_key,
BTRFS_COMPARE_TREE_DELETED,
ctx);
@@ -5508,8 +5507,7 @@
continue;
} else if (right_end_reached) {
if (left_level == 0) {
- ret = changed_cb(left_root, right_root,
- left_path, right_path,
+ ret = changed_cb(left_path, right_path,
&left_key,
BTRFS_COMPARE_TREE_NEW,
ctx);
@@ -5523,8 +5521,7 @@
if (left_level == 0 && right_level == 0) {
cmp = btrfs_comp_cpu_keys(&left_key, &right_key);
if (cmp < 0) {
- ret = changed_cb(left_root, right_root,
- left_path, right_path,
+ ret = changed_cb(left_path, right_path,
&left_key,
BTRFS_COMPARE_TREE_NEW,
ctx);
@@ -5532,8 +5529,7 @@
goto out;
advance_left = ADVANCE;
} else if (cmp > 0) {
- ret = changed_cb(left_root, right_root,
- left_path, right_path,
+ ret = changed_cb(left_path, right_path,
&right_key,
BTRFS_COMPARE_TREE_DELETED,
ctx);
@@ -5550,8 +5546,7 @@
result = BTRFS_COMPARE_TREE_CHANGED;
else
result = BTRFS_COMPARE_TREE_SAME;
- ret = changed_cb(left_root, right_root,
- left_path, right_path,
+ ret = changed_cb(left_path, right_path,
&left_key, result, ctx);
if (ret < 0)
goto out;
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 8fc6903..16b3537 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2821,9 +2821,7 @@
BTRFS_COMPARE_TREE_CHANGED,
BTRFS_COMPARE_TREE_SAME,
};
-typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root,
- struct btrfs_root *right_root,
- struct btrfs_path *left_path,
+typedef int (*btrfs_changed_cb_t)(struct btrfs_path *left_path,
struct btrfs_path *right_path,
struct btrfs_key *key,
enum btrfs_compare_tree_result result,
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index e4ad2fa..07445be 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -6159,9 +6159,7 @@
* Updates compare related fields in sctx and simply forwards to the actual
* changed_xxx functions.
*/
-static int changed_cb(struct btrfs_root *left_root,
- struct btrfs_root *right_root,
- struct btrfs_path *left_path,
+static int changed_cb(struct btrfs_path *left_path,
struct btrfs_path *right_path,
struct btrfs_key *key,
enum btrfs_compare_tree_result result,
@@ -6243,8 +6241,8 @@
slot = path->slots[0];
btrfs_item_key_to_cpu(eb, &found_key, slot);
- ret = changed_cb(send_root, NULL, path, NULL,
- &found_key, BTRFS_COMPARE_TREE_NEW, sctx);
+ ret = changed_cb(path, NULL, &found_key,
+ BTRFS_COMPARE_TREE_NEW, sctx);
if (ret < 0)
goto out;