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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-04 07:56:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-04 07:56:22 -0700
commit08542241cf710d1b7c28c63b2213be4b7b1b3362 (patch)
treeacafbf265de573f020cdaeb3539d0bdb3c71dec6
parentf4622045455faaac958ca35a0cf313f3d6c14d8b (diff)
parentb16b1b6cd052acbacc0a15f934bca9b354534d48 (diff)
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.
-rw-r--r--drivers/md/bitmap.c3
-rw-r--r--drivers/md/bitmap.h3
2 files changed, 1 insertions, 5 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 97e73e555d11..17e2b472e16d 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -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;
diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index 55ca5aec84e4..b44b0aba2d47 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -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
/*