Fix inode check in snapshot

When nova_append_snapshot_info_entry() is first called the snapshot inode is not initialized and so we have to skip the first integrity check.
NVSL · Jul 5, 2017 · d06ba45 · d06ba45 · Andiry · Jul 5, 2017
1 parent 725486a
commit d06ba45
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/fs/nova/log.c b/fs/nova/log.c
@@ -956,10 +956,13 @@ int nova_append_snapshot_info_entry(struct super_block *sb,
 	entry_info.epoch_id = data->epoch_id;
 	entry_info.inplace = 0;
 
-	if (nova_check_inode_integrity(sb, sih->ino, sih->pi_addr,
-			sih->alter_pi_addr, &inode_copy, 0) < 0) {
-		ret = -EIO;
-		goto out;
+	if (sih->log_head != 0) {
+		/* sih->log_head == 0 indicates this inode is not initialized */
+		if (nova_check_inode_integrity(sb, sih->ino, sih->pi_addr,
+				sih->alter_pi_addr, &inode_copy, 0) < 0) {
+			ret = -EIO;
+			goto out;
+		}
 	}
 
 	ret = nova_append_log_entry(sb, pi, NULL, sih, &entry_info);