---

yaml
---
r: 195743
b: refs/heads/master
c: e8aec06
h: refs/heads/master
i:
  195741: a4c85d2
  195739: 38d7239
  195735: 3fb3efe
  195727: 019ff9f
  195711: ddded08
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 78f94673d7faf01677f374f4ebbf324ff1a0aa6e
+refs/heads/master: e8aec068ecb1957630816cfa2c150c6b3ddd1790

trunk/fs/ocfs2/file.c

@@ -1422,12 +1422,14 @@ static int ocfs2_remove_inode_range(struct inode *inode,
 				    struct buffer_head *di_bh, u64 byte_start,
 				    u64 byte_len)
 {
-	int ret = 0;
+	int ret = 0, flags = 0;
 	u32 trunc_start, trunc_len, cpos, phys_cpos, alloc_size;
 	struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
 	struct ocfs2_cached_dealloc_ctxt dealloc;
 	struct address_space *mapping = inode->i_mapping;
 	struct ocfs2_extent_tree et;
+	struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+	u64 refcount_loc = le64_to_cpu(di->i_refcount_loc);
 
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);
 	ocfs2_init_dealloc_ctxt(&dealloc);
@@ -1453,6 +1455,27 @@ static int ocfs2_remove_inode_range(struct inode *inode,
 		goto out;
 	}
 
+	/*
+	 * For reflinks, we may need to CoW 2 clusters which might be
+	 * partially zero'd later, if hole's start and end offset were
+	 * within one cluster(means is not exactly aligned to clustersize).
+	 */
+
+	if (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL) {
+
+		ret = ocfs2_cow_file_pos(inode, di_bh, byte_start);
+		if (ret) {
+			mlog_errno(ret);
+			goto out;
+		}
+
+		ret = ocfs2_cow_file_pos(inode, di_bh, byte_start + byte_len);
+		if (ret) {
+			mlog_errno(ret);
+			goto out;
+		}
+	}
+
 	trunc_start = ocfs2_clusters_for_bytes(osb->sb, byte_start);
 	trunc_len = (byte_start + byte_len) >> osb->s_clustersize_bits;
 	if (trunc_len >= trunc_start)
@@ -1474,7 +1497,7 @@ static int ocfs2_remove_inode_range(struct inode *inode,
 	cpos = trunc_start;
 	while (trunc_len) {
 		ret = ocfs2_get_clusters(inode, cpos, &phys_cpos,
-					 &alloc_size, NULL);
+					 &alloc_size, &flags);
 		if (ret) {
 			mlog_errno(ret);
 			goto out;
@@ -1487,7 +1510,8 @@ static int ocfs2_remove_inode_range(struct inode *inode,
 		if (phys_cpos != 0) {
 			ret = ocfs2_remove_btree_range(inode, &et, cpos,
 						       phys_cpos, alloc_size,
-						       0, &dealloc, 0);
+						       flags, &dealloc,
+						       refcount_loc);
 			if (ret) {
 				mlog_errno(ret);
 				goto out;