nilfs2: use mark_buffer_dirty to mark btnode or meta data dirty

This replaces nilfs_mdt_mark_buffer_dirty and nilfs_btnode_mark_dirty
macros with mark_buffer_dirty and gets rid of nilfs_mark_buffer_dirty,
an own mark buffer dirty function.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
index ce679cf..0a0aba6 100644
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -117,7 +117,7 @@
 	le64_add_cpu(&header->sh_ndirtysegs, ndirtyadd);
 	kunmap_atomic(kaddr, KM_USER0);
 
-	nilfs_mdt_mark_buffer_dirty(header_bh);
+	mark_buffer_dirty(header_bh);
 }
 
 /**
@@ -377,8 +377,8 @@
 			kunmap_atomic(kaddr, KM_USER0);
 
 			sui->ncleansegs--;
-			nilfs_mdt_mark_buffer_dirty(header_bh);
-			nilfs_mdt_mark_buffer_dirty(su_bh);
+			mark_buffer_dirty(header_bh);
+			mark_buffer_dirty(su_bh);
 			nilfs_mdt_mark_dirty(sufile);
 			brelse(su_bh);
 			*segnump = segnum;
@@ -421,7 +421,7 @@
 	nilfs_sufile_mod_counter(header_bh, -1, 1);
 	NILFS_SUI(sufile)->ncleansegs--;
 
-	nilfs_mdt_mark_buffer_dirty(su_bh);
+	mark_buffer_dirty(su_bh);
 	nilfs_mdt_mark_dirty(sufile);
 }
 
@@ -452,7 +452,7 @@
 	nilfs_sufile_mod_counter(header_bh, clean ? (u64)-1 : 0, dirty ? 0 : 1);
 	NILFS_SUI(sufile)->ncleansegs -= clean;
 
-	nilfs_mdt_mark_buffer_dirty(su_bh);
+	mark_buffer_dirty(su_bh);
 	nilfs_mdt_mark_dirty(sufile);
 }
 
@@ -478,7 +478,7 @@
 	sudirty = nilfs_segment_usage_dirty(su);
 	nilfs_segment_usage_set_clean(su);
 	kunmap_atomic(kaddr, KM_USER0);
-	nilfs_mdt_mark_buffer_dirty(su_bh);
+	mark_buffer_dirty(su_bh);
 
 	nilfs_sufile_mod_counter(header_bh, 1, sudirty ? (u64)-1 : 0);
 	NILFS_SUI(sufile)->ncleansegs++;
@@ -498,7 +498,7 @@
 
 	ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 0, &bh);
 	if (!ret) {
-		nilfs_mdt_mark_buffer_dirty(bh);
+		mark_buffer_dirty(bh);
 		nilfs_mdt_mark_dirty(sufile);
 		brelse(bh);
 	}
@@ -533,7 +533,7 @@
 	su->su_nblocks = cpu_to_le32(nblocks);
 	kunmap_atomic(kaddr, KM_USER0);
 
-	nilfs_mdt_mark_buffer_dirty(bh);
+	mark_buffer_dirty(bh);
 	nilfs_mdt_mark_dirty(sufile);
 	brelse(bh);
 
@@ -612,7 +612,7 @@
 		nilfs_sufile_mod_counter(header_bh, -1, 0);
 		NILFS_SUI(sufile)->ncleansegs--;
 	}
-	nilfs_mdt_mark_buffer_dirty(su_bh);
+	mark_buffer_dirty(su_bh);
 	nilfs_mdt_mark_dirty(sufile);
 }
 
@@ -698,7 +698,7 @@
 		}
 		kunmap_atomic(kaddr, KM_USER0);
 		if (nc > 0) {
-			nilfs_mdt_mark_buffer_dirty(su_bh);
+			mark_buffer_dirty(su_bh);
 			ncleaned += nc;
 		}
 		brelse(su_bh);
@@ -777,7 +777,7 @@
 	header->sh_ncleansegs = cpu_to_le64(sui->ncleansegs);
 	kunmap_atomic(kaddr, KM_USER0);
 
-	nilfs_mdt_mark_buffer_dirty(header_bh);
+	mark_buffer_dirty(header_bh);
 	nilfs_mdt_mark_dirty(sufile);
 	nilfs_set_nsegments(nilfs, newnsegs);