1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index e44dc92609b..3b96045a00c 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -345,7 +345,9 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
         if (EXT2_HAS_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR))
                 return;
 
+        spin_lock(&EXT2_SB(sb)->s_lock);
         EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
+        spin_unlock(&EXT2_SB(sb)->s_lock);
         sb->s_dirt = 1;
         mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
 }