1 files changed, 2 insertions, 0 deletions

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index fc13cc119aad..5d15442abbd0 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1407,9 +1407,11 @@ static int __ext2_write_inode(struct inode *inode, int do_sync)
                                 * created, add a flag to the superblock.
                                 */
                                 lock_kernel();
+                                spin_lock(&EXT2_SB(sb)->s_lock);
                                 ext2_update_dynamic_rev(sb);
                                 EXT2_SET_RO_COMPAT_FEATURE(sb,
                                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE);
+                                spin_unlock(&EXT2_SB(sb)->s_lock);
                                 unlock_kernel();
                                 ext2_write_super(sb);
                         }