Commit 08542241 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'md-3.4-fixes' of git://neil.brown.name/md 

Pull one small fix for md/bitmaps from NeilBrown:
 "This fixes a regression that was introduced in the merge window."

* tag 'md-3.4-fixes' of git://neil.brown.name/md:
  md/bitmap: fix calculation of 'chunks' - missing shift.
parents f4622045 b16b1b6c

drivers/md/bitmap.c

+1 −2
Original line number Diff line number Diff line
@@ -1727,8 +1727,7 @@ int bitmap_create(struct mddev *mddev) 
	bitmap->chunkshift = (ffz(~mddev->bitmap_info.chunksize)

			      - BITMAP_BLOCK_SHIFT);



	/* now that chunksize and chunkshift are set, we can use these macros */

	chunks = (blocks + bitmap->chunkshift - 1) >>

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

			bitmap->chunkshift;

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

drivers/md/bitmap.h

+0 −3
Original line number Diff line number Diff line
@@ -101,9 +101,6 @@ typedef __u16 bitmap_counter_t; 


#define BITMAP_BLOCK_SHIFT 9



/* how many blocks per chunk? (this is variable) */

#define CHUNK_BLOCK_RATIO(bitmap) ((bitmap)->mddev->bitmap_info.chunksize >> BITMAP_BLOCK_SHIFT)



#endif



/*

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