Btrfs: fix memory leak in btrfs_parse_early_options()
Ilya Dryomov [Tue, 8 Nov 2011 14:47:55 +0000 (16:47 +0200)]
Don't leak subvol_name string in case multiple subvol= options are
given.  "The lastest option is effective" behavior (consistent with
subvolid= and subvolrootid= options) is preserved.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

fs/btrfs/super.c

index dcd5aef..6befcaf 100644 (file)
@@ -448,6 +448,7 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
                token = match_token(p, tokens, args);
                switch (token) {
                case Opt_subvol:
+                       kfree(*subvol_name);
                        *subvol_name = match_strdup(&args[0]);
                        break;
                case Opt_subvolid: