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btrfs: use rb_find() in lookup_root_entry()

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Use the rb-tree helper so we don't open code the search code.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Pan Chuang <panchuang@vivo.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Yangtao Li 2025-05-16 11:03:25 +08:00 committed by David Sterba
parent 3f60f4374a
commit afaa9f8235
1 changed files with 16 additions and 13 deletions
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29
fs/btrfs/ref-verify.c
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@ -112,6 +112,19 @@ static struct block_entry *lookup_block_entry(struct rb_root *root, u64 bytenr)
return rb_entry_safe(node, struct block_entry, node);
}
static int root_entry_root_objectid_key_cmp(const void *key, const struct rb_node *node)
{
const u64 *objectid = key;
const struct root_entry *entry = rb_entry(node, struct root_entry, node);
if (entry->root_objectid < *objectid)
return 1;
else if (entry->root_objectid > *objectid)
return -1;
return 0;
}
static struct root_entry *insert_root_entry(struct rb_root *root,
struct root_entry *re)
{
@ -185,20 +198,10 @@ static struct ref_entry *insert_ref_entry(struct rb_root *root,
static struct root_entry *lookup_root_entry(struct rb_root *root, u64 objectid)
{
struct rb_node *n;
struct root_entry *entry = NULL;
struct rb_node *node;
n = root->rb_node;
while (n) {
entry = rb_entry(n, struct root_entry, node);
if (entry->root_objectid < objectid)
n = n->rb_right;
else if (entry->root_objectid > objectid)
n = n->rb_left;
else
return entry;
}
return NULL;
node = rb_find(&objectid, root, root_entry_root_objectid_key_cmp);
return rb_entry_safe(node, struct root_entry, node);
}
#ifdef CONFIG_STACKTRACE