From: Yu Kuai <yukuai3@xxxxxxxxxx>
The parameter is always set to 0 for now, following patches will use
this helper to write llbitmap to underlying disks, allow writing
dirty sectors instead of the whole page.
Also rename md_super_write to md_write_metadata since there is nothing
super-block specific.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/md-bitmap.c | 3 ++-
drivers/md/md.c | 28 ++++++++++++++--------------
drivers/md/md.h | 5 +++--
3 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 431a3ab2e449..168eea6595b3 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c
@@ -470,7 +470,8 @@ static int __write_sb_page(struct md_rdev *rdev, struct bitmap *bitmap,
return -EINVAL;
}
- md_super_write(mddev, rdev, sboff + ps, (int)min(size, bitmap_limit), page);
+ md_write_metadata(mddev, rdev, sboff + ps, (int)min(size, bitmap_limit),
+ page, 0);
return 0;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 32b997dfe6f4..18e03f651f6b 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1021,8 +1021,9 @@ static void super_written(struct bio *bio)
wake_up(&mddev->sb_wait);
}
-void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
- sector_t sector, int size, struct page *page)
+void md_write_metadata(struct mddev *mddev, struct md_rdev *rdev,
+ sector_t sector, int size, struct page *page,
+ unsigned int offset)
{
/* write first size bytes of page to sector of rdev
* Increment mddev->pending_writes before returning
@@ -1047,7 +1048,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
atomic_inc(&rdev->nr_pending);
bio->bi_iter.bi_sector = sector;
- __bio_add_page(bio, page, size, 0);
+ __bio_add_page(bio, page, size, offset);
bio->bi_private = rdev;
bio->bi_end_io = super_written;
@@ -1657,8 +1658,8 @@ super_90_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
if ((u64)num_sectors >= (2ULL << 32) && rdev->mddev->level >= 1)
num_sectors = (sector_t)(2ULL << 32) - 2;
do {
- md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size,
- rdev->sb_page);
+ md_write_metadata(rdev->mddev, rdev, rdev->sb_start,
+ rdev->sb_size, rdev->sb_page, 0);
} while (md_super_wait(rdev->mddev) < 0);
return num_sectors;
}
@@ -2306,8 +2307,8 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
sb->super_offset = cpu_to_le64(rdev->sb_start);
sb->sb_csum = calc_sb_1_csum(sb);
do {
- md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size,
- rdev->sb_page);
+ md_write_metadata(rdev->mddev, rdev, rdev->sb_start,
+ rdev->sb_size, rdev->sb_page, 0);
} while (md_super_wait(rdev->mddev) < 0);
return num_sectors;
@@ -2816,18 +2817,17 @@ void md_update_sb(struct mddev *mddev, int force_change)
continue; /* no noise on spare devices */
if (!test_bit(Faulty, &rdev->flags)) {
- md_super_write(mddev,rdev,
- rdev->sb_start, rdev->sb_size,
- rdev->sb_page);
+ md_write_metadata(mddev, rdev, rdev->sb_start,
+ rdev->sb_size, rdev->sb_page, 0);
pr_debug("md: (write) %pg's sb offset: %llu\n",
rdev->bdev,
(unsigned long long)rdev->sb_start);
rdev->sb_events = mddev->events;
if (rdev->badblocks.size) {
- md_super_write(mddev, rdev,
- rdev->badblocks.sector,
- rdev->badblocks.size << 9,
- rdev->bb_page);
+ md_write_metadata(mddev, rdev,
+ rdev->badblocks.sector,
+ rdev->badblocks.size << 9,
+ rdev->bb_page, 0);
rdev->badblocks.size = 0;
}
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 6eb5dfdf2f55..5ba4a9093a92 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -886,8 +886,9 @@ void md_account_bio(struct mddev *mddev, struct bio **bio);
void md_free_cloned_bio(struct bio *bio);
extern bool __must_check md_flush_request(struct mddev *mddev, struct bio *bio);
-extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
- sector_t sector, int size, struct page *page);
+extern void md_write_metadata(struct mddev *mddev, struct md_rdev *rdev,
+ sector_t sector, int size, struct page *page,
+ unsigned int offset);
extern int md_super_wait(struct mddev *mddev);
extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
struct page *page, blk_opf_t opf, bool metadata_op);
--
2.39.2
