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Commit 15702d7f authored by NeilBrown's avatar NeilBrown
Browse files

md/bitmap: use DIV_ROUND_UP instead of open-code 



Also take the opportunity to simplify CHUNK_BLOCK_RATIO.

Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent 40cffcc0

drivers/md/bitmap.c

+2 −3
Original line number Diff line number Diff line
@@ -1694,9 +1694,8 @@ int bitmap_create(struct mddev *mddev) 
	bitmap->counts.chunkshift = (ffz(~mddev->bitmap_info.chunksize)

			      - BITMAP_BLOCK_SHIFT);



	chunks = (blocks + (1 << bitmap->counts.chunkshift) - 1) >>

			bitmap->counts.chunkshift;

	pages = (chunks + PAGE_COUNTER_RATIO - 1) / PAGE_COUNTER_RATIO;

	chunks = DIV_ROUND_UP_SECTOR_T(blocks, 1 << bitmap->counts.chunkshift);

	pages = DIV_ROUND_UP(chunks, PAGE_COUNTER_RATIO);



	BUG_ON(!pages);