Boris Burkov 8b228324a8 btrfs: clear free space tree on ro->rw remount
A user might want to revert to v1 or nospace_cache on a root filesystem,
and much like turning on the free space tree, that can only be done
remounting from ro->rw. Support clearing the free space tree on such
mounts by moving it into the shared remount logic.

Since the CLEAR_CACHE option sticks around across remounts, this change
would result in clearing the tree for ever on every remount, which is
not desirable. To fix that, add CLEAR_CACHE to the oneshot options we
clear at mount end, which has the other bonus of not cluttering the
/proc/mounts output with clear_cache.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-12-09 19:16:08 +01:00
..
2020-10-16 11:11:22 -07:00
2020-10-19 14:28:30 -07:00
2020-11-19 22:38:29 -05:00
2020-09-21 08:59:26 -07:00
2020-11-14 11:26:04 -08:00
2020-11-20 11:47:22 -08:00
\n
2020-10-15 14:56:15 -07:00
2020-10-01 11:15:31 +02:00
2020-09-10 14:03:31 -07:00
2020-10-05 10:38:33 -06:00
2020-10-19 14:28:30 -07:00
\n
2020-10-15 15:03:10 -07:00
2020-10-16 12:21:15 -07:00
2020-10-13 12:12:44 -07:00
2020-08-04 21:02:38 -04:00
2020-10-16 11:11:15 -07:00
2020-09-22 23:45:57 -04:00
2020-07-31 08:16:01 +02:00
2020-08-07 11:33:24 -07:00
2020-10-23 11:33:41 -07:00
2020-05-14 16:44:24 +02:00
2020-08-12 10:58:01 -07:00
2020-10-23 11:33:41 -07:00
2020-07-31 08:16:00 +02:00
2020-11-06 10:05:18 -08:00
2020-10-24 12:40:18 -07:00
2020-09-26 22:55:05 -04:00
2020-08-27 16:06:47 -04:00
2020-06-09 15:40:50 -07:00
2020-07-31 08:16:01 +02:00