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authorNeilBrown <neilb@suse.com>2015-10-01 16:03:38 +1000
committerNeilBrown <neilb@suse.com>2015-10-02 17:24:13 +1000
commitda6fb7a9e5bd6f04f7e15070f630bdf1ea502841 (patch)
treecc7f1bf1d5b2e213bc3ff759d8dcf3c318907da7 /drivers/md/bitmap.c
parente8ff8bf09ff49733534ff3cee91bde030186055f (diff)
downloadlinux-da6fb7a9e5bd6f04f7e15070f630bdf1ea502841.tar.bz2
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: b97e92574c0b ("Use separate bitmaps for each nodes in the cluster") Cc: stable@vger.kernel.org (v4.1+) Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md/bitmap.c')
-rw-r--r--drivers/md/bitmap.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index e51de52eeb94..48b5890c28e3 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -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;