1 files changed, 17 insertions, 27 deletions

diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c
index 3bb21aa58474..75be4b46bc6f 100644
--- a/fs/smb/client/inode.c
+++ b/fs/smb/client/inode.c
@@ -1203,18 +1203,17 @@ static int reparse_info_to_fattr(struct cifs_open_info_data *data,
 			goto out;
 		}
 		break;
-	case IO_REPARSE_TAG_MOUNT_POINT:
-		cifs_create_junction_fattr(fattr, sb);
-		rc = 0;
-		goto out;
 	default:
 		/* Check for cached reparse point data */
 		if (data->symlink_target || data->reparse.buf) {
 			rc = 0;
-		} else if (iov && server->ops->parse_reparse_point) {
-			rc = server->ops->parse_reparse_point(cifs_sb,
-							      full_path,
-							      iov, data);
+		} else if (iov && server->ops->get_reparse_point_buffer) {
+			struct reparse_data_buffer *reparse_buf;
+			u32 reparse_len;
+
+			reparse_buf = server->ops->get_reparse_point_buffer(iov, &reparse_len);
+			rc = parse_reparse_point(reparse_buf, reparse_len,
+						 cifs_sb, full_path, data);
 			/*
 			 * If the reparse point was not handled but it is the
 			 * name surrogate which points to directory, then treat
@@ -1228,6 +1227,16 @@ static int reparse_info_to_fattr(struct cifs_open_info_data *data,
 				cifs_create_junction_fattr(fattr, sb);
 				goto out;
 			}
+			/*
+			 * If the reparse point is unsupported by the Linux SMB
+			 * client then let it process by the SMB server. So mask
+			 * the -EOPNOTSUPP error code. This will allow Linux SMB
+			 * client to send SMB OPEN request to server. If server
+			 * does not support this reparse point too then server
+			 * will return error during open the path.
+			 */
+			if (rc == -EOPNOTSUPP)
+				rc = 0;
 		}
 
 		if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK && !rc) {
@@ -2901,23 +2910,6 @@ int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, u64 start,
 	return -EOPNOTSUPP;
 }
 
-int cifs_truncate_page(struct address_space *mapping, loff_t from)
-{
-	pgoff_t index = from >> PAGE_SHIFT;
-	unsigned offset = from & (PAGE_SIZE - 1);
-	struct page *page;
-	int rc = 0;
-
-	page = grab_cache_page(mapping, index);
-	if (!page)
-		return -ENOMEM;
-
-	zero_user_segment(page, offset, PAGE_SIZE);
-	unlock_page(page);
-	put_page(page);
-	return rc;
-}
-
 void cifs_setsize(struct inode *inode, loff_t offset)
 {
 	struct cifsInodeInfo *cifs_i = CIFS_I(inode);
@@ -3012,8 +3004,6 @@ set_size_out:
 		 */
 		attrs->ia_ctime = attrs->ia_mtime = current_time(inode);
 		attrs->ia_valid |= ATTR_CTIME | ATTR_MTIME;
-
-		cifs_truncate_page(inode->i_mapping, inode->i_size);
 	}
 
 	return rc;