Commit 7797da14 authored by Yu Kuai's avatar Yu Kuai
Browse files

md: factor out a helper raid_is_456() 

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: default avatarYu Kuai <yukuai3@huawei.com>
Reviewed-by: default avatarXiao Ni <xni@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Reviewed-by: default avatarLi Nan <linan122@huawei.com>
parent d01acbce

drivers/md/md.c

+1 −8
Original line number Diff line number Diff line
@@ -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

drivers/md/md.h

+6 −0
Original line number Diff line number Diff line
@@ -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)

{