From 0c6e1d7fd5e7560fdc4bb3418c2c0f0d7a95bf76 Mon Sep 17 00:00:00 2001 From: Hao Xu Date: Thu, 26 Aug 2021 01:58:56 +0800 Subject: 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: Hao Xu Reviewed-by: Pavel Begunkov Link: https://lore.kernel.org/r/20210825175856.194299-1-haoxu@linux.alibaba.com Signed-off-by: Jens Axboe --- fs/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/io_uring.c') diff --git a/fs/io_uring.c b/fs/io_uring.c index e321cb0d00c4..be3c3aea6398 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -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 */ -- cgit v1.2.3-59-g8ed1b