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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 <asml.silence@gmail.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
pull/1354/merge
Pavel Begunkov 2025-10-16 14:23:19 +01:00 committed by Jens Axboe
parent 284306f6e6
commit 4c53e392a1
1 changed files with 2 additions and 2 deletions
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4
io_uring/register.c
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@ -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;