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Date: Thu, 13 Jun 2019 09:58:00 -0400 From: Josef Bacik <josef@...icpanda.com> To: Naohiro Aota <naohiro.aota@....com> Cc: linux-btrfs@...r.kernel.org, David Sterba <dsterba@...e.com>, Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, Qu Wenruo <wqu@...e.com>, Nikolay Borisov <nborisov@...e.com>, linux-kernel@...r.kernel.org, Hannes Reinecke <hare@...e.com>, linux-fsdevel@...r.kernel.org, Damien Le Moal <damien.lemoal@....com>, Matias Bjørling <mb@...htnvm.io>, Johannes Thumshirn <jthumshirn@...e.de>, Bart Van Assche <bvanassche@....org> Subject: Re: [PATCH 02/19] btrfs: Get zone information of zoned block devices 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@....com> > Signed-off-by: Naohiro Aota <naohiro.aota@....com> > --- > 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
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