diff options
| -rw-r--r-- | io_uring/kbuf.c | 30 |
1 files changed, 5 insertions, 25 deletions
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 8e72de7712ac..f152afdf0bc7 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -501,12 +501,9 @@ int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe return 0; } -#define IO_BUFFER_ALLOC_BATCH 64 - static int io_refill_buffer_cache(struct io_ring_ctx *ctx) { - struct io_buffer *bufs[IO_BUFFER_ALLOC_BATCH]; - int allocated; + struct io_buffer *buf; /* * Completions that don't happen inline (eg not under uring_lock) will @@ -524,27 +521,10 @@ static int io_refill_buffer_cache(struct io_ring_ctx *ctx) spin_unlock(&ctx->completion_lock); } - /* - * No free buffers and no completion entries either. Allocate a new - * batch of buffer entries and add those to our freelist. - */ - - allocated = kmem_cache_alloc_bulk(io_buf_cachep, GFP_KERNEL_ACCOUNT, - ARRAY_SIZE(bufs), (void **) bufs); - if (unlikely(!allocated)) { - /* - * Bulk alloc is all-or-nothing. If we fail to get a batch, - * retry single alloc to be on the safe side. - */ - bufs[0] = kmem_cache_alloc(io_buf_cachep, GFP_KERNEL); - if (!bufs[0]) - return -ENOMEM; - allocated = 1; - } - - while (allocated) - list_add_tail(&bufs[--allocated]->list, &ctx->io_buffers_cache); - + buf = kmem_cache_alloc(io_buf_cachep, GFP_KERNEL); + if (!buf) + return -ENOMEM; + list_add_tail(&buf->list, &ctx->io_buffers_cache); return 0; } |