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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>
This commit is contained in:
Nikolay Borisov 2017-08-21 12:43:45 +03:00 committed by David Sterba
parent a0357511f2
commit ee8c494f88
3 changed files with 9 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
fs/btrfs/ctree.c
View File

@ -5496,8 +5496,7 @@ int btrfs_compare_trees(struct btrfs_root *left_root,
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 @@ int btrfs_compare_trees(struct btrfs_root *left_root,
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 @@ int btrfs_compare_trees(struct btrfs_root *left_root,
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 @@ int btrfs_compare_trees(struct btrfs_root *left_root,
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 @@ int btrfs_compare_trees(struct btrfs_root *left_root,
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;

4
fs/btrfs/ctree.h
View File

@ -2821,9 +2821,7 @@ enum btrfs_compare_tree_result {
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,

8
fs/btrfs/send.c
View File

@ -6159,9 +6159,7 @@ out:
* 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 @@ static int full_send_tree(struct send_ctx *sctx)
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;