Commit d8ee9d69 authored Feb 24, 2011 by Matthew Wilcox

NVMe: Fix discontiguous accesses

When we submit subsequent portions of the I/O, we need to access the
updated block, not start reading again from the original position.
This was showing up as miscompares in the XFS randholes testcase.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

parent 1ad2f893

drivers/block/nvme.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -529,6 +529,8 @@ static int nvme_submit_bio_queue(struct nvme_queue nvmeq, struct nvme_ns ns,
		cmnd->rw.control = cpu_to_le16(control);
		cmnd->rw.dsmgmt = cpu_to_le32(dsmgmt);

		bio->bi_sector += length >> 9;

		if (++nvmeq->sq_tail == nvmeq->q_depth)
		nvmeq->sq_tail = 0;
		writel(nvmeq->sq_tail, nvmeq->q_db);