Commit 0c6e1d7f authored by Hao Xu's avatar Hao Xu Committed by Jens Axboe
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io_uring: don't free request to slab 



It's not necessary to free the request back to slab when we fail to
get sqe, just move it to state->free_list.

Signed-off-by: default avatarHao Xu <haoxu@linux.alibaba.com>
Reviewed-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20210825175856.194299-1-haoxu@linux.alibaba.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent aaa4db12

fs/io_uring.c

+1 −1
Original line number Diff line number Diff line
@@ -6889,7 +6889,7 @@ static int io_submit_sqes(struct io_ring_ctx *ctx, unsigned int nr) 
		}

		sqe = io_get_sqe(ctx);

		if (unlikely(!sqe)) {

			kmem_cache_free(req_cachep, req);

			list_add(&req->inflight_entry, &ctx->submit_state.free_list);

			break;

		}

		/* will complete beyond this point, count as submitted */