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md: factor out a helper raid_is_456()

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There are no functional changes, the helper will be used by llbitmap in
following patches.

Link: https://lore.kernel.org/linux-raid/20250829080426.1441678-3-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Li Nan <linan122@huawei.com>
This commit is contained in:
Yu Kuai 2025-08-29 16:04:17 +08:00
parent d01acbce39
commit 7797da149d
2 changed files with 7 additions and 8 deletions
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9
drivers/md/md.c
View File

@ -9121,19 +9121,12 @@ static sector_t md_sync_position(struct mddev *mddev, enum sync_action action)
static bool sync_io_within_limit(struct mddev *mddev)
{
int io_sectors;
/*
* For raid456, sync IO is stripe(4k) per IO, for other levels, it's
* RESYNC_PAGES(64k) per IO.
*/
if (mddev->level == 4 || mddev->level == 5 || mddev->level == 6)
io_sectors = 8;
else
io_sectors = 128;
return atomic_read(&mddev->recovery_active) <
io_sectors * sync_io_depth(mddev);
(raid_is_456(mddev) ? 8 : 128) * sync_io_depth(mddev);
}
#define SYNC_MARKS 10

6
drivers/md/md.h
View File

@ -1033,6 +1033,12 @@ static inline bool mddev_is_dm(struct mddev *mddev)
return !mddev->gendisk;
}
static inline bool raid_is_456(struct mddev *mddev)
{
return mddev->level == ID_RAID4 || mddev->level == ID_RAID5 ||
mddev->level == ID_RAID6;
}
static inline void mddev_trace_remap(struct mddev *mddev, struct bio *bio,
sector_t sector)
{