Commit da6fb7a9 authored Oct 01, 2015 by NeilBrown

md/bitmap: don't pass -1 to bitmap_storage_alloc.



Passing -1 to bitmap_storage_alloc() causes page->index to be set to
-1, which is quite problematic.

So only pass ->cluster_slot if mddev_is_clustered().

Fixes: b97e9257 ("Use separate bitmaps for each nodes in the cluster")
Cc: stable@vger.kernel.org (v4.1+)
Signed-off-by: NeilBrown <neilb@suse.com>

parent e8ff8bf0

drivers/md/bitmap.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1997,7 +1997,8 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
		if (bitmap->mddev->bitmap_info.offset \|\| bitmap->mddev->bitmap_info.file)
		ret = bitmap_storage_alloc(&store, chunks,
		!bitmap->mddev->bitmap_info.external,
		bitmap->cluster_slot);
		mddev_is_clustered(bitmap->mddev)
		? bitmap->cluster_slot : 0);
		if (ret)
		goto err;