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btrfs: use btrfs_for_each_slot in btrfs_unlink_all_paths 

This function can be simplified by refactoring to use the new iterator
macro.  No functional changes.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Signed-off-by: Gabriel Niebler <gniebler@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Gabriel Niebler 2022-03-09 14:50:49 +01:00 committed by David Sterba
parent 9930e9d4ad
commit 3d64f060a7
1 changed files with 13 additions and 23 deletions
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36
fs/btrfs/send.c
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@ -6110,8 +6110,11 @@ static int btrfs_unlink_all_paths(struct send_ctx *sctx)
{
LIST_HEAD(deleted_refs);
struct btrfs_path *path;
struct btrfs_root *root = sctx->parent_root;
struct btrfs_key key;
struct btrfs_key found_key;
struct parent_paths_ctx ctx;
int iter_ret = 0;
int ret;
path = alloc_path_for_send();
@ -6121,39 +6124,26 @@ static int btrfs_unlink_all_paths(struct send_ctx *sctx)
key.objectid = sctx->cur_ino;
key.type = BTRFS_INODE_REF_KEY;
key.offset = 0;
ret = btrfs_search_slot(NULL, sctx->parent_root, &key, path, 0, 0);
if (ret < 0)
goto out;
ctx.refs = &deleted_refs;
ctx.sctx = sctx;
while (true) {
struct extent_buffer *eb = path->nodes[0];
int slot = path->slots[0];
if (slot >= btrfs_header_nritems(eb)) {
ret = btrfs_next_leaf(sctx->parent_root, path);
if (ret < 0)
goto out;
else if (ret > 0)
break;
continue;
}
btrfs_item_key_to_cpu(eb, &key, slot);
if (key.objectid != sctx->cur_ino)
btrfs_for_each_slot(root, &key, &found_key, path, iter_ret) {
if (found_key.objectid != key.objectid)
break;
if (key.type != BTRFS_INODE_REF_KEY &&
key.type != BTRFS_INODE_EXTREF_KEY)
if (found_key.type != key.type &&
found_key.type != BTRFS_INODE_EXTREF_KEY)
break;
ret = iterate_inode_ref(sctx->parent_root, path, &key, 1,
ret = iterate_inode_ref(root, path, &found_key, 1,
record_parent_ref, &ctx);
if (ret < 0)
goto out;
path->slots[0]++;
}
/* Catch error found during iteration */
if (iter_ret < 0) {
ret = iter_ret;
goto out;
}
while (!list_empty(&deleted_refs)) {