btrfs-progs: ignore -a option in mkfs

Let mkfs accept '-a' option and not complain.  When a partition has non-zero
value in the fs_passno filed in /etc/fstab, the fsck is run but fails and boot
stops. As fsck does not break things currently, it's safe to ignore the option
and let the boot proceed.

Reference: https://bugzilla.novell.com/show_bug.cgi?id=655906

Signed-off-by: David Sterba <dsterba@suse.cz>

diff --git a/btrfsck.c b/btrfsck.c
index 67f4a9d..a851008 100644 (file)
--- a/btrfsck.c
+++ b/btrfsck.c
@@ -3501,11 +3501,12 @@ int main(int ac, char **av)
 
        while(1) {
                int c;
-               c = getopt_long(ac, av, "s:", long_options,
+               c = getopt_long(ac, av, "as:", long_options,
                                &option_index);
                if (c < 0)
                        break;
                switch(c) {
+                       case 'a': /* ignored */ break;
                        case 's':
                                num = atol(optarg);
                                bytenr = btrfs_sb_offset(num);