diff options
| author | Amery Hung <ameryhung@gmail.com> | 2026-02-05 14:29:01 -0800 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2026-02-06 14:28:55 -0800 |
| commit | fd103ffc57c9a3b8b76bc852ffae5eb630a6ded4 (patch) | |
| tree | 859736ed9030d321d5513b1b1ceb5f1069629d3f /kernel/bpf | |
| parent | 1b7e0cae85accc9e728004511193e995cd040300 (diff) | |
bpf: Convert bpf_selem_link_map to failable
To prepare for changing bpf_local_storage_map_bucket::lock to rqspinlock,
convert bpf_selem_link_map() to failable. It still always succeeds and
returns 0 until the change happens. No functional change.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260205222916.1788211-4-ameryhung@gmail.com
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/bpf_local_storage.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/bpf/bpf_local_storage.c b/kernel/bpf/bpf_local_storage.c index 6fa71502c7d7..2f94ca4a4475 100644 --- a/kernel/bpf/bpf_local_storage.c +++ b/kernel/bpf/bpf_local_storage.c @@ -365,9 +365,9 @@ static void bpf_selem_unlink_map_nolock(struct bpf_local_storage_elem *selem) hlist_del_init_rcu(&selem->map_node); } -void bpf_selem_link_map(struct bpf_local_storage_map *smap, - struct bpf_local_storage *local_storage, - struct bpf_local_storage_elem *selem) +int bpf_selem_link_map(struct bpf_local_storage_map *smap, + struct bpf_local_storage *local_storage, + struct bpf_local_storage_elem *selem) { struct bpf_local_storage_map_bucket *b; unsigned long flags; @@ -376,6 +376,8 @@ void bpf_selem_link_map(struct bpf_local_storage_map *smap, raw_spin_lock_irqsave(&b->lock, flags); hlist_add_head_rcu(&selem->map_node, &b->list); raw_spin_unlock_irqrestore(&b->lock, flags); + + return 0; } static void bpf_selem_link_map_nolock(struct bpf_local_storage_map_bucket *b, |