Messages in this thread | | | Date | Thu, 28 Apr 2022 08:31:33 +0900 | Subject | Re: [PATCH 03/16] block: add bdev_zone_no helper | From | Damien Le Moal <> |
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On 4/28/22 01:02, Pankaj Raghav wrote: > Many places in the filesystem for zoned devices open code this function > to find the zone number for a given sector with power of 2 assumption. > This generic helper can be used to calculate zone number for a given > sector in a block device > > This helper internally uses blk_queue_zone_no to find the zone number. > > Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> > Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> > --- > include/linux/blkdev.h | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index f8f2d2998afb..55293e0a8702 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -1392,6 +1392,15 @@ static inline bool bdev_zone_aligned(struct block_device *bdev, sector_t sec) > return false; > } > > +static inline unsigned int bdev_zone_no(struct block_device *bdev, sector_t sec) > +{ > + struct request_queue *q = bdev_get_queue(bdev); > + > + if (q)
q is never NULL. So this can be simplified to:
return blk_queue_zone_no(bdev_get_queue(bdev), sector);
> + return blk_queue_zone_no(q, sec); > + return 0; > +} > + > static inline unsigned int bdev_max_open_zones(struct block_device *bdev) > { > struct request_queue *q = bdev_get_queue(bdev);
-- Damien Le Moal Western Digital Research
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