Commit e522f446 authored Oct 13, 2019 by Israel Rukshin Committed by Jens Axboe Nov 04, 2019

nvmet: add unlikely check at nvmet_req_alloc_sgl



The call to sgl_alloc shouldn't fail so add this simple optimization to
the fast path.

Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 4d764bb9

drivers/nvme/target/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -966,7 +966,7 @@ int nvmet_req_alloc_sgl(struct nvmet_req *req)
		}

		req->sg = sgl_alloc(req->transfer_len, GFP_KERNEL, &req->sg_cnt);
		if (!req->sg)
		if (unlikely(!req->sg))
		return -ENOMEM;

		return 0;

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