From 23d91035cafa30d186242ebdf583aa1b55f1c59e Mon Sep 17 00:00:00 2001 From: Gabriel Krisman Bertazi Date: Mon, 16 Dec 2024 15:46:12 -0500 Subject: [PATCH] io_uring/net: Allocate msghdr async data through helper This abstracts away the cache details. Signed-off-by: Gabriel Krisman Bertazi Link: https://lore.kernel.org/r/20241216204615.759089-7-krisman@suse.de Signed-off-by: Jens Axboe --- io_uring/net.c | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) diff --git a/io_uring/net.c b/io_uring/net.c index df1f7dc6f1c8..8457408194e7 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -155,30 +155,31 @@ static void io_netmsg_recycle(struct io_kiocb *req, unsigned int issue_flags) } } +static void io_msg_async_data_init(void *obj) +{ + struct io_async_msghdr *hdr = (struct io_async_msghdr *)obj; + + hdr->free_iov = NULL; + hdr->free_iov_nr = 0; +} + static struct io_async_msghdr *io_msg_alloc_async(struct io_kiocb *req) { struct io_ring_ctx *ctx = req->ctx; struct io_async_msghdr *hdr; - hdr = io_alloc_cache_get(&ctx->netmsg_cache); - if (hdr) { - if (hdr->free_iov) { - kasan_mempool_unpoison_object(hdr->free_iov, - hdr->free_iov_nr * sizeof(struct iovec)); - req->flags |= REQ_F_NEED_CLEANUP; - } - req->flags |= REQ_F_ASYNC_DATA; - req->async_data = hdr; - return hdr; - } + hdr = io_uring_alloc_async_data(&ctx->netmsg_cache, req, + io_msg_async_data_init); + if (!hdr) + return NULL; - if (!io_alloc_async_data(req)) { - hdr = req->async_data; - hdr->free_iov_nr = 0; - hdr->free_iov = NULL; - return hdr; + /* If the async data was cached, we might have an iov cached inside. */ + if (hdr->free_iov) { + kasan_mempool_unpoison_object(hdr->free_iov, + hdr->free_iov_nr * sizeof(struct iovec)); + req->flags |= REQ_F_NEED_CLEANUP; } - return NULL; + return hdr; } /* assign new iovec to kmsg, if we need to */