[PATCH 07/11] md-bitmap: cleanup read_sb_page
From: Christoph Hellwig <hch@lst.de>
Date: 2023-06-15 06:50:38
Also in:
linux-block, linux-fsdevel
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
Convert read_sb_page to the normal kernel coding style, calculate the target sector only once, and add a local iosize variable to make the call to sync_page_io more readable. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/md/md-bitmap.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c
index 1f71683b417981..f4bff2dfe2fd8f 100644
--- a/drivers/md/md-bitmap.c
+++ b/drivers/md/md-bitmap.c@@ -139,26 +139,25 @@ static void md_bitmap_checkfree(struct bitmap_counts *bitmap, unsigned long page */ /* IO operations when bitmap is stored near all superblocks */ + +/* choose a good rdev and read the page from there */ static int read_sb_page(struct mddev *mddev, loff_t offset, - struct page *page, - unsigned long index, int size) + struct page *page, unsigned long index, int size) { - /* choose a good rdev and read the page from there */ + sector_t sector = offset + index * (PAGE_SIZE / SECTOR_SIZE); struct md_rdev *rdev; - sector_t target; rdev_for_each(rdev, mddev) { - if (! test_bit(In_sync, &rdev->flags) - || test_bit(Faulty, &rdev->flags) - || test_bit(Bitmap_sync, &rdev->flags)) - continue; + u32 iosize = roundup(size, bdev_logical_block_size(rdev->bdev)); - target = offset + index * (PAGE_SIZE/512); + if (!test_bit(In_sync, &rdev->flags) || + test_bit(Faulty, &rdev->flags) || + test_bit(Bitmap_sync, &rdev->flags)) + continue; - if (sync_page_io(rdev, target, - roundup(size, bdev_logical_block_size(rdev->bdev)), - page, REQ_OP_READ, true)) { + if (sync_page_io(rdev, sector, iosize, page, REQ_OP_READ, + true)) { page->index = index; return 0; }
--
2.39.2