From: Nikolay Borisov Date: Mon, 21 Aug 2017 09:43:45 +0000 (+0300) Subject: btrfs: Remove unused arguments from btrfs_changed_cb_t X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ee8c494f88736c1a1873fdd65559828f9a734bcf;p=openwrt%2Fstaging%2Fblogic.git 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 Reviewed-by: David Sterba Reviewed-by: Josef Bacik Signed-off-by: David Sterba --- diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 6d49db7d86be..19b9c5131745 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -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; diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 8fc690384c58..16b3537f31d4 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -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, diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index e4ad2fa82acf..07445be8c1cc 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -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;