On 7/27/22 09:22, Pankaj Raghav wrote:
Checking if a given sector is aligned to a zone is a common
operation that is performed for zoned devices. Add
bdev_is_zone_start helper to check for this instead of opencoding it
everywhere.
I can't find the bdev_is_zone_start() function in this patch?
To make this work bdev_get_queue(), bdev_zone_sectors() and
bdev_is_zoned() are moved earlier without modifications.
Can that change perhaps be isolated into a separate patch?
diff --git a/block/blk-core.c b/block/blk-core.c
index 3d286a256d3d..1f7e9a90e198 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -570,7 +570,7 @@ static inline blk_status_t blk_check_zone_append(struct
request_queue *q,
return BLK_STS_NOTSUPP;
/* The bio sector must point to the start of a sequential zone */
- if (bio->bi_iter.bi_sector & (bdev_zone_sectors(bio->bi_bdev) - 1) ||
+ if (!bdev_is_zone_aligned(bio->bi_bdev, bio->bi_iter.bi_sector) ||
!bio_zone_is_seq(bio))
return BLK_STS_IOERR;
The bdev_is_zone_start() name seems more clear to me than
bdev_is_zone_aligned(). Has there already been a discussion about which
name to use for this function?
+ /*
+ * Non power-of-2 zone size support was added to remove the
+ * gap between zone capacity and zone size. Though it is
technically
+ * possible to have gaps in a non power-of-2 device, Linux
requires
+ * the zone size to be equal to zone capacity for non power-of-2
+ * zoned devices.
+ */
+ if (!is_power_of_2(zone->len) && zone->capacity < zone->len) {
+ pr_warn("%s: Invalid zone capacity for non power of 2 zone
size",
+ disk->disk_name);
Given the severity of this error, shouldn't the zone capacity and length
be reported in the error message?
Thanks,
Bart.
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