Commit dec10a1a authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
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io_uring/kbuf: use io_create_region for kbuf creation 



kbuf ring is published by io_buffer_add_list(), which correctly protects
with mmap_lock, there is no need to use io_create_region_mmap_safe()
before as the region is not yet exposed to the userspace via mmap.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Reviewed-by: default avatarGabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 6e975297

io_uring/kbuf.c

+1 −1
Original line number Diff line number Diff line
@@ -630,7 +630,7 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg) 
		rd.user_addr = reg.ring_addr;

		rd.flags |= IORING_MEM_REGION_TYPE_USER;

	}

	ret = io_create_region_mmap_safe(ctx, &bl->region, &rd, mmap_offset);

	ret = io_create_region(ctx, &bl->region, &rd, mmap_offset);

	if (ret)

		goto fail;

	br = io_region_get_ptr(&bl->region);