Gh0st
/
linux
mirror of https://github.com/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

block: introduce bdev_zone_start() 

Introduce the function bdev_zone_start() as a more explicit (and clear)
replacement for ALIGN_DOWN() to get the start sector of a zone
containing a particular sector of a zoned block device.

Use this new helper in blkdev_get_zone_info() and
blkdev_report_zones_cached().

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2025-11-07 15:38:44 +09:00 committed by Jens Axboe
parent e2b0ec7761
commit 25976c314f
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
block/blk-zoned.c
View File

@ -950,7 +950,7 @@ int blkdev_get_zone_info(struct block_device *bdev, sector_t sector,
return -EINVAL;
memset(zone, 0, sizeof(*zone));
sector = ALIGN_DOWN(sector, zone_sectors);
sector = bdev_zone_start(bdev, sector);
if (!blkdev_has_cached_report_zones(bdev))
return blkdev_report_zone_fallback(bdev, sector, zone);
@ -1068,7 +1068,7 @@ int blkdev_report_zones_cached(struct block_device *bdev, sector_t sector,
return blkdev_do_report_zones(bdev, sector, nr_zones, &args);
}
for (sector = ALIGN_DOWN(sector, zone_sectors);
for (sector = bdev_zone_start(bdev, sector);
sector < capacity && idx < nr_zones;
sector += zone_sectors, idx++) {
ret = blkdev_get_zone_info(bdev, sector, &zone);

6
include/linux/blkdev.h
View File

@ -1522,6 +1522,12 @@ static inline sector_t bdev_zone_sectors(struct block_device *bdev)
return q->limits.chunk_sectors;
}
static inline sector_t bdev_zone_start(struct block_device *bdev,
sector_t sector)
{
return sector & ~(bdev_zone_sectors(bdev) - 1);
}
static inline sector_t bdev_offset_from_zone_start(struct block_device *bdev,
sector_t sector)
{