diff options
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/io_uring.c | 2 | ||||
| -rw-r--r-- | io_uring/kbuf.c | 7 |
2 files changed, 5 insertions, 4 deletions
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 722624b6d0dc..2a8b8c304d2a 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -2789,8 +2789,8 @@ static __cold void io_ring_ctx_free(struct io_ring_ctx *ctx) io_eventfd_unregister(ctx); io_alloc_cache_free(&ctx->apoll_cache, io_apoll_cache_free); io_alloc_cache_free(&ctx->netmsg_cache, io_netmsg_cache_free); - mutex_unlock(&ctx->uring_lock); io_destroy_buffers(ctx); + mutex_unlock(&ctx->uring_lock); if (ctx->sq_creds) put_cred(ctx->sq_creds); if (ctx->submitter_task) diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 3002dc827195..a90c820ce99e 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -228,17 +228,18 @@ static int __io_remove_buffers(struct io_ring_ctx *ctx, return i; } - /* the head kbuf is the list itself */ + /* protects io_buffers_cache */ + lockdep_assert_held(&ctx->uring_lock); + while (!list_empty(&bl->buf_list)) { struct io_buffer *nxt; nxt = list_first_entry(&bl->buf_list, struct io_buffer, list); - list_del(&nxt->list); + list_move(&nxt->list, &ctx->io_buffers_cache); if (++i == nbufs) return i; cond_resched(); } - i++; return i; } |