Btrfs: fail on mismatched subvol and subvolid mount options

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There's nothing to stop a user from passing both subvol= and subvolid=
to mount, but if they don't refer to the same subvolume, someone is
going to be surprised at some point. Error out on this case, but allow
users to pass in both if they do match (which they could, for example,
get out of /proc/mounts).

Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Chris Mason <clm@fb.com>

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Omar Sandoval 2015-05-18 02:16:29 -07:00 • committed by Chris Mason

parent fa33065950

commit bb289b7be6

1 changed files with 25 additions and 8 deletions

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33

fs/btrfs/super.c

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