lkml.org 
[lkml]   [2015]   [Oct]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.2 237/258] md/bitmap: dont pass -1 to bitmap_storage_alloc.
Date
4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: NeilBrown <neilb@suse.com>

commit da6fb7a9e5bd6f04f7e15070f630bdf1ea502841 upstream.

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")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/md/bitmap.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1997,7 +1997,8 @@ int bitmap_resize(struct bitmap *bitmap,
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;




\
 
 \ /
  Last update: 2015-10-18 06:01    [W:0.070 / U:0.468 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site