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bdev/raid: extend unmap process to null data io

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Other io_type, like FLUSH, has a similar character with
UNMAP, that has a range description (offset and length),
but has no data payload. So the process for UNMAP io_type
can be extended to io_type like FLUSH.

Change-Id: I9467dfc3cc4fc1431b79359b0c477807ec138ac7
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/446491
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: wuzhouhui <wuzhouhui@kingsoft.com>
Reviewed-by: Piotr Pelpliński <piotr.pelplinski@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Xiaodong Liu 2019-02-28 20:48:07 +08:00 committed by Changpeng Liu
parent 59f0d22e40
commit 1d29b23134
1 changed files with 28 additions and 17 deletions
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45
lib/bdev/raid/bdev_raid.c
View File

@ -634,7 +634,7 @@ _raid_bdev_get_io_range(struct raid_bdev_io_range *io_range,
io_range->start_disk = start_strip % num_base_bdevs;
io_range->end_disk = end_strip % num_base_bdevs;
/* Calculate how many base_bdevs are involved in unmap operation.
/* Calculate how many base_bdevs are involved in io operation.
* Number of base bdevs involved is between 1 and num_base_bdevs.
* It will be 1 if the first strip and last strip are the same one.
*/
@ -693,16 +693,17 @@ _raid_bdev_split_io_range(struct raid_bdev_io_range *io_range, uint64_t disk_idx
/*
* brief:
* _raid_bdev_submit_unmap_request_next function submits the next batch of unmap requests
* to member disks; it will submit as many as possible unless one unmap fails with -ENOMEM, in
* which case it will queue it for later submission
* _raid_bdev_submit_null_payload_request_next function submits the next batch of
* io requests with range but without payload, like FLUSH and UNMAP, to member disks;
* it will submit as many as possible unless one base io request fails with -ENOMEM,
* in which case it will queue itself for later submission.
* params:
* bdev_io - pointer to parent bdev_io on raid bdev device
* returns:
* none
*/
static void
_raid_bdev_submit_unmap_request_next(void *_bdev_io)
_raid_bdev_submit_null_payload_request_next(void *_bdev_io)
{
struct spdk_bdev_io *bdev_io = _bdev_io;
struct raid_bdev_io *raid_io;
@ -733,15 +734,25 @@ _raid_bdev_submit_unmap_request_next(void *_bdev_io)
_raid_bdev_split_io_range(&io_range, disk_idx, &offset_in_disk, &nblocks_in_disk);
ret = spdk_bdev_unmap_blocks(raid_bdev->base_bdev_info[disk_idx].desc,
raid_ch->base_channel[disk_idx],
offset_in_disk, nblocks_in_disk,
raid_bdev_base_io_completion, bdev_io);
switch (bdev_io->type) {
case SPDK_BDEV_IO_TYPE_UNMAP:
ret = spdk_bdev_unmap_blocks(raid_bdev->base_bdev_info[disk_idx].desc,
raid_ch->base_channel[disk_idx],
offset_in_disk, nblocks_in_disk,
raid_bdev_base_io_completion, bdev_io);
break;
default:
SPDK_ERRLOG("submit request, invalid io type with null payload %u\n", bdev_io->type);
assert(false);
ret = -EIO;
}
if (ret == 0) {
raid_io->base_bdev_io_submitted++;
} else {
raid_bdev_base_io_submit_fail_process(bdev_io, disk_idx,
_raid_bdev_submit_unmap_request_next, ret);
_raid_bdev_submit_null_payload_request_next, ret);
return;
}
}
@ -749,8 +760,8 @@ _raid_bdev_submit_unmap_request_next(void *_bdev_io)
/*
* brief:
* _raid_bdev_submit_unmap_request function is the submit_request function for
* unmap requests
* _raid_bdev_submit_null_payload_request function is the submit_request function
* for io requests with range but without payload, like UNMAP and FLUSH.
* params:
* ch - pointer to raid bdev io channel
* bdev_io - pointer to parent bdev_io on raid bdev device
@ -758,7 +769,7 @@ _raid_bdev_submit_unmap_request_next(void *_bdev_io)
* none
*/
static void
_raid_bdev_submit_unmap_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io)
_raid_bdev_submit_null_payload_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io)
{
struct raid_bdev_io *raid_io;
@ -768,10 +779,10 @@ _raid_bdev_submit_unmap_request(struct spdk_io_channel *ch, struct spdk_bdev_io
raid_io->base_bdev_io_completed = 0;
raid_io->base_bdev_io_status = SPDK_BDEV_IO_STATUS_SUCCESS;
SPDK_DEBUGLOG(SPDK_LOG_BDEV_RAID, "raid_bdev unmap (0x%lx, 0x%lx)\n",
bdev_io->u.bdev.offset_blocks, bdev_io->u.bdev.num_blocks);
SPDK_DEBUGLOG(SPDK_LOG_BDEV_RAID, "raid_bdev: type %d, range (0x%lx, 0x%lx)\n",
bdev_io->type, bdev_io->u.bdev.offset_blocks, bdev_io->u.bdev.num_blocks);
_raid_bdev_submit_unmap_request_next(bdev_io);
_raid_bdev_submit_null_payload_request_next(bdev_io);
}
/*
@ -834,7 +845,7 @@ raid_bdev_submit_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_i
break;
case SPDK_BDEV_IO_TYPE_UNMAP:
_raid_bdev_submit_unmap_request(ch, bdev_io);
_raid_bdev_submit_null_payload_request(ch, bdev_io);
break;
default: