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btrfs: send: introduce recorded_ref_alloc and recorded_ref_free 

Introduce wrappers to allocate and free recorded_ref structures.

Reviewed-by: Robbie Ko <robbieko@synology.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: BingJing Chang <bingjingc@synology.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
BingJing Chang 2022-07-12 09:36:31 +08:00 committed by David Sterba
parent 2ce543f478
commit 71ecfc133b
1 changed files with 24 additions and 10 deletions
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34
fs/btrfs/send.c
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@ -2795,6 +2795,26 @@ struct recorded_ref {
int name_len;
};
static struct recorded_ref *recorded_ref_alloc(void)
{
struct recorded_ref *ref;
ref = kzalloc(sizeof(*ref), GFP_KERNEL);
if (!ref)
return NULL;
INIT_LIST_HEAD(&ref->list);
return ref;
}
static void recorded_ref_free(struct recorded_ref *ref)
{
if (!ref)
return;
list_del(&ref->list);
fs_path_free(ref->full_path);
kfree(ref);
}
static void set_ref_path(struct recorded_ref *ref, struct fs_path *path)
{
ref->full_path = path;
@ -2812,7 +2832,7 @@ static int __record_ref(struct list_head *head, u64 dir,
{
struct recorded_ref *ref;
ref = kmalloc(sizeof(*ref), GFP_KERNEL);
ref = recorded_ref_alloc();
if (!ref)
return -ENOMEM;
@ -2827,14 +2847,12 @@ static int dup_ref(struct recorded_ref *ref, struct list_head *list)
{
struct recorded_ref *new;
new = kmalloc(sizeof(*ref), GFP_KERNEL);
new = recorded_ref_alloc();
if (!new)
return -ENOMEM;
new->dir = ref->dir;
new->dir_gen = ref->dir_gen;
new->full_path = NULL;
INIT_LIST_HEAD(&new->list);
list_add_tail(&new->list, list);
return 0;
}
@ -2845,9 +2863,7 @@ static void __free_recorded_refs(struct list_head *head)
while (!list_empty(head)) {
cur = list_entry(head->next, struct recorded_ref, list);
fs_path_free(cur->full_path);
list_del(&cur->list);
kfree(cur);
recorded_ref_free(cur);
}
}
@ -6484,9 +6500,7 @@ static int btrfs_unlink_all_paths(struct send_ctx *sctx)
ret = send_unlink(sctx, ref->full_path);
if (ret < 0)
goto out;
fs_path_free(ref->full_path);
list_del(&ref->list);
kfree(ref);
recorded_ref_free(ref);
}
ret = 0;
out: