Commit 06fd87e4 authored by Konrad Sztyber's avatar Konrad Sztyber
Browse files

bdev/malloc: use appends for write requests 



Signed-off-by: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
Change-Id: Ief6c873a5f65274a25b67bc3f2811d8f3e4a33b3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17200


Community-CI: Mellanox Build Bot
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
parent ad154aae

module/bdev/malloc/bdev_malloc.c

+15 −17
Original line number Diff line number Diff line
@@ -282,8 +282,7 @@ bdev_malloc_writev(struct malloc_disk *mdisk, struct spdk_io_channel *ch, 
		   struct malloc_task *task, struct spdk_bdev_io *bdev_io)

{

	uint64_t len, offset, md_offset;

	int i, res = 0;

	void *dst;

	int res = 0;

	size_t md_len;



	len = bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen;
@@ -295,26 +294,25 @@ bdev_malloc_writev(struct malloc_disk *mdisk, struct spdk_io_channel *ch, 
		return;

	}



	SPDK_DEBUGLOG(bdev_malloc, "wrote %zu bytes to offset %#" PRIx64 ", iovcnt=%d\n",

		      len, offset, bdev_io->u.bdev.iovcnt);



	dst = mdisk->malloc_buf + offset;



	task->status = SPDK_BDEV_IO_STATUS_SUCCESS;

	task->num_outstanding = 0;

	task->iov.iov_base = mdisk->malloc_buf + offset;

	task->iov.iov_len = len;



	for (i = 0; i < bdev_io->u.bdev.iovcnt; i++) {

		task->num_outstanding++;

		res = spdk_accel_submit_copy(ch, dst, bdev_io->u.bdev.iovs[i].iov_base,

					     bdev_io->u.bdev.iovs[i].iov_len, 0, malloc_done, task);

	SPDK_DEBUGLOG(bdev_malloc, "wrote %zu bytes to offset %#" PRIx64 ", iovcnt=%d\n",

		      len, offset, bdev_io->u.bdev.iovcnt);



		if (res != 0) {

			malloc_done(task, res);

			break;

	task->num_outstanding++;

	res = spdk_accel_append_copy(&bdev_io->u.bdev.accel_sequence, ch, &task->iov, 1, NULL, NULL,

				     bdev_io->u.bdev.iovs, bdev_io->u.bdev.iovcnt,

				     bdev_io->u.bdev.memory_domain,

				     bdev_io->u.bdev.memory_domain_ctx, 0, NULL, NULL);

	if (spdk_unlikely(res != 0)) {

		malloc_sequence_fail(task, res);

		return;

	}



		dst += bdev_io->u.bdev.iovs[i].iov_len;

	}

	spdk_accel_sequence_finish(bdev_io->u.bdev.accel_sequence, malloc_sequence_done, task);



	if (bdev_io->u.bdev.md_buf == NULL) {

		return;

test/bdev/chaining.sh

+2 −2
Original line number Diff line number Diff line
@@ -79,7 +79,7 @@ update_stats 
# Write a single 64K request and check the stats

dd if=/dev/urandom of="$input" bs=1K count=64

spdk_dd --if "$input" --ob Nvme0n1 --bs $((64 * 1024)) --count 1

(($(get_stat sequence_executed) == stats[sequence_executed] + 1))

(($(get_stat sequence_executed) == stats[sequence_executed] + 2))

(($(get_stat executed encrypt) == stats[encrypt_executed] + 2))

(($(get_stat executed decrypt) == stats[decrypt_executed]))

# There's still one copy performed by the malloc bdev
@@ -98,7 +98,7 @@ update_stats 


# Now do the same using 4K requests

spdk_dd --if "$input" --ob Nvme0n1 --bs 4096 --count 16

(($(get_stat sequence_executed) == stats[sequence_executed] + 16))

(($(get_stat sequence_executed) == stats[sequence_executed] + 32))

(($(get_stat executed encrypt) == stats[encrypt_executed] + 32))

(($(get_stat executed decrypt) == stats[decrypt_executed]))

(($(get_stat executed copy) == stats[copy_executed] + 16))