On Fri, Jun 07, 2019 at 10:10:08PM +0900, Naohiro Aota wrote: > If a zoned block device is found, get its zone information (number of zones > and zone size) using the new helper function btrfs_get_dev_zonetypes(). To > avoid costly run-time zone report commands to test the device zones type > during block allocation, attach the seqzones bitmap to the device structure > to indicate if a zone is sequential or accept random writes. > > This patch also introduces the helper function btrfs_dev_is_sequential() to > test if the zone storing a block is a sequential write required zone. > > Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> > Signed-off-by: Naohiro Aota <naohiro.aota@xxxxxxx> > --- > fs/btrfs/volumes.c | 143 +++++++++++++++++++++++++++++++++++++++++++++ > fs/btrfs/volumes.h | 33 +++++++++++ > 2 files changed, 176 insertions(+) > We have enough problems with giant files already, please just add a separate hmzoned.c or whatever and put all the zone specific code in there. That'll save me time when I go and break a bunch of stuff out. Thanks, Josef
