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bdev/ocssd: Call read() directly when buffer is already allocated

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Call bdev_ocssd_read() directly when buffer is already allocated
to improve performance and support retry in the bdev module as done
for the standard NVMe bdev.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: Icf18148e09b61df7effc84535bea60f49d1c15b3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5559
Community-CI: Broadcom CI
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
This commit is contained in:
Shuhei Matsumoto 2020-12-13 23:22:14 +09:00 committed by Tomasz Zawadzki
parent c885010fbf
commit 6fdc0a5346
1 changed files with 14 additions and 3 deletions
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17
module/bdev/nvme/bdev_ocssd.c
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@ -810,9 +810,20 @@ _bdev_ocssd_submit_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev
switch (bdev_io->type) {
case SPDK_BDEV_IO_TYPE_READ:
spdk_bdev_io_get_buf(bdev_io, bdev_ocssd_io_get_buf_cb,
bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen);
return 0;
if (bdev_io->u.bdev.iovs && bdev_io->u.bdev.iovs[0].iov_base) {
return bdev_ocssd_read(ocssd_bdev,
nvme_ch,
ocdev_io,
bdev_io->u.bdev.iovs,
bdev_io->u.bdev.iovcnt,
bdev_io->u.bdev.md_buf,
bdev_io->u.bdev.num_blocks,
bdev_io->u.bdev.offset_blocks);
} else {
spdk_bdev_io_get_buf(bdev_io, bdev_ocssd_io_get_buf_cb,
bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen);
return 0;
}
case SPDK_BDEV_IO_TYPE_WRITE:
return bdev_ocssd_write(ocssd_bdev,