diff options
| author | Menglong Dong <menglong8.dong@gmail.com> | 2025-08-21 17:06:05 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-08-25 18:52:16 -0700 |
| commit | f2fa9b906911407ca99d14aa9f4353fda7566bbc (patch) | |
| tree | bfaba6a5f364f019f3f3d219a0e6b95ef40c5ca3 /kernel/bpf/bpf_inode_storage.c | |
| parent | 8c0afc7c9c112eb6884bc7e443247f242b6d8a3e (diff) | |
bpf: use rcu_read_lock_dont_migrate() for bpf_inode_storage_free()
Use rcu_read_lock_dont_migrate() and rcu_read_unlock_migrate() in
bpf_inode_storage_free to obtain better performance when PREEMPT_RCU is
not enabled.
Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Link: https://lore.kernel.org/r/20250821090609.42508-4-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/bpf_inode_storage.c')
| -rw-r--r-- | kernel/bpf/bpf_inode_storage.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/bpf/bpf_inode_storage.c b/kernel/bpf/bpf_inode_storage.c index 15a3eb9b02d9..e54cce2b9175 100644 --- a/kernel/bpf/bpf_inode_storage.c +++ b/kernel/bpf/bpf_inode_storage.c @@ -62,8 +62,7 @@ void bpf_inode_storage_free(struct inode *inode) if (!bsb) return; - migrate_disable(); - rcu_read_lock(); + rcu_read_lock_dont_migrate(); local_storage = rcu_dereference(bsb->storage); if (!local_storage) @@ -71,8 +70,7 @@ void bpf_inode_storage_free(struct inode *inode) bpf_local_storage_destroy(local_storage); out: - rcu_read_unlock(); - migrate_enable(); + rcu_read_unlock_migrate(); } static void *bpf_fd_inode_storage_lookup_elem(struct bpf_map *map, void *key) |