ext4: fix potential race between s_flex_groups online resizing and access

[linux.git] / fs / ext4 / ext4.h

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index b1ece5329738a413a901ff946260a80b309e55e4..614fefa7dc7ab22a980b9d34d72dad3d6500c2c5 100644 (file)
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1512,7 +1512,7 @@ struct ext4_sb_info {
        unsigned int s_extent_max_zeroout_kb;
 
        unsigned int s_log_groups_per_flex;
-       struct flex_groups *s_flex_groups;
+       struct flex_groups * __rcu *s_flex_groups;
        ext4_group_t s_flex_groups_allocated;
 
        /* workqueue for reserved extent conversions (buffered io) */