1 files changed, 5 insertions, 0 deletions

diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index 24638e059bf..064279e33bb 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -688,6 +688,8 @@ static const struct nilfs_bmap_ptr_operations nilfs_bmap_ptr_ops_gc = {
         .bpop_translate         =       NULL,
 };
 
+static struct lock_class_key nilfs_bmap_dat_lock_key;
+
 /**
  * nilfs_bmap_read - read a bmap from an inode
  * @bmap: bmap
@@ -715,6 +717,7 @@ int nilfs_bmap_read(struct nilfs_bmap *bmap, struct nilfs_inode *raw_inode)
                 bmap->b_pops = &nilfs_bmap_ptr_ops_p;
                 bmap->b_last_allocated_key = 0; /* XXX: use macro */
                 bmap->b_last_allocated_ptr = NILFS_BMAP_NEW_PTR_INIT;
+                lockdep_set_class(&bmap->b_sem, &nilfs_bmap_dat_lock_key);
                 break;
         case NILFS_CPFILE_INO:
         case NILFS_SUFILE_INO:
@@ -772,6 +775,7 @@ void nilfs_bmap_init_gcdat(struct nilfs_bmap *gcbmap, struct nilfs_bmap *bmap)
 {
         memcpy(gcbmap, bmap, sizeof(union nilfs_bmap_union));
         init_rwsem(&gcbmap->b_sem);
+        lockdep_set_class(&bmap->b_sem, &nilfs_bmap_dat_lock_key);
         gcbmap->b_inode = &NILFS_BMAP_I(gcbmap)->vfs_inode;
 }
 
@@ -779,5 +783,6 @@ void nilfs_bmap_commit_gcdat(struct nilfs_bmap *gcbmap, struct nilfs_bmap *bmap)
 {
         memcpy(bmap, gcbmap, sizeof(union nilfs_bmap_union));
         init_rwsem(&bmap->b_sem);
+        lockdep_set_class(&bmap->b_sem, &nilfs_bmap_dat_lock_key);
         bmap->b_inode = &NILFS_BMAP_I(bmap)->vfs_inode;
 }