From: Pavel Begunkov Date: Thu, 16 Oct 2025 13:23:19 +0000 (+0100) Subject: io_uring: use no mmap safe region helpers on resizing X-Git-Tag: v6.19-rc1~169^2~53 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4c53e392a194f2bb37403a5b9bcf8e77401234cc;p=thirdparty%2Fkernel%2Flinux.git io_uring: use no mmap safe region helpers on resizing io_create_region_mmap_safe() is only needed when the created region is exposed to userspace code via mmap. io_register_resize_rings() creates them locally on stack, so the no mmap_safe version of the helper is enough. Signed-off-by: Pavel Begunkov Reviewed-by: Gabriel Krisman Bertazi Signed-off-by: Jens Axboe --- diff --git a/io_uring/register.c b/io_uring/register.c index 2e4717f1357c7..a809d95153e4a 100644 --- a/io_uring/register.c +++ b/io_uring/register.c @@ -432,7 +432,7 @@ static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg) rd.user_addr = p.cq_off.user_addr; rd.flags |= IORING_MEM_REGION_TYPE_USER; } - ret = io_create_region_mmap_safe(ctx, &n.ring_region, &rd, IORING_OFF_CQ_RING); + ret = io_create_region(ctx, &n.ring_region, &rd, IORING_OFF_CQ_RING); if (ret) { io_register_free_rings(ctx, &p, &n); return ret; @@ -472,7 +472,7 @@ static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg) rd.user_addr = p.sq_off.user_addr; rd.flags |= IORING_MEM_REGION_TYPE_USER; } - ret = io_create_region_mmap_safe(ctx, &n.sq_region, &rd, IORING_OFF_SQES); + ret = io_create_region(ctx, &n.sq_region, &rd, IORING_OFF_SQES); if (ret) { io_register_free_rings(ctx, &p, &n); return ret;