[PATCH] ext2: s_next_generation locking

There is no locking around the increment of this per-filesystem counter.
Create a new lock, just for this.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/ext2_fs_sb.h b/include/linux/ext2_fs_sb.h
index 13178c16c7ea..4eda0ed76a48 100644
--- a/include/linux/ext2_fs_sb.h
+++ b/include/linux/ext2_fs_sb.h
@@ -45,6 +45,7 @@ struct ext2_sb_info {
 	int s_desc_per_block_bits;
 	int s_inode_size;
 	int s_first_ino;
+	spinlock_t s_next_gen_lock;
 	u32 s_next_generation;
 	unsigned long s_dir_count;
 	u8 *s_debts;