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authorNeilBrown <neilb@suse.de>2009-04-20 11:50:24 +1000
committerNeilBrown <neilb@suse.de>2009-04-20 11:50:24 +1000
commit1f59390339f263c0fe7908fbe54466dbf3a64b58 (patch)
tree334f287c819c1876f29cd5833222eacd910e0ada /drivers/md/bitmap.c
parentc03f6a19699fce4389888a45db8245969311d868 (diff)
downloadlinux-stericsson-1f59390339f263c0fe7908fbe54466dbf3a64b58.tar.gz
md: support bitmaps on RAID10 arrays larger then 2 terabytes
.. and other arrays with components larger than 2 terabytes. We use a "long" rather than a "sector_t" in part of the bitmap size calculations, which is sad. Reported-by: "Mario 'BitKoenig' Holbe" <Mario.Holbe@TU-Ilmenau.DE> Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/bitmap.c')
-rw-r--r--drivers/md/bitmap.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index e4510c976b34..1fb91edc7de2 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1590,7 +1590,7 @@ void bitmap_destroy(mddev_t *mddev)
int bitmap_create(mddev_t *mddev)
{
struct bitmap *bitmap;
- unsigned long blocks = mddev->resync_max_sectors;
+ sector_t blocks = mddev->resync_max_sectors;
unsigned long chunks;
unsigned long pages;
struct file *file = mddev->bitmap_file;
@@ -1632,8 +1632,8 @@ int bitmap_create(mddev_t *mddev)
bitmap->chunkshift = ffz(~bitmap->chunksize);
/* now that chunksize and chunkshift are set, we can use these macros */
- chunks = (blocks + CHUNK_BLOCK_RATIO(bitmap) - 1) /
- CHUNK_BLOCK_RATIO(bitmap);
+ chunks = (blocks + CHUNK_BLOCK_RATIO(bitmap) - 1) >>
+ CHUNK_BLOCK_SHIFT(bitmap);
pages = (chunks + PAGE_COUNTER_RATIO - 1) / PAGE_COUNTER_RATIO;
BUG_ON(!pages);