Naohiro Aota 3680b48533 btrfs: mark resumed async balance as writing
commit a690e5f2db4d1dca742ce734aaff9f3112d63764 upstream.

When btrfs balance is interrupted with umount, the background balance
resumes on the next mount. There is a potential deadlock with FS freezing
here like as described in commit 26559780b953 ("btrfs: zoned: mark
relocation as writing"). Mark the process as sb_writing to avoid it.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
CC: stable@vger.kernel.org # 4.9+
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-20 09:34:19 +02:00
..
2021-09-02 09:21:27 -07:00
2021-08-23 13:19:09 +02:00
2021-06-22 14:11:57 +02:00
2021-02-09 02:46:07 +01:00
2021-06-22 14:11:57 +02:00
2021-08-23 13:19:09 +02:00
2020-10-07 12:13:17 +02:00
2021-03-05 12:21:14 -08:00