Introduce the BIO flag BIO_ZONE_WRITE_LOCKED to indicate that a BIO owns
the write lock of the zone it is targeting. This is the counterpart of
the struct request flag RQF_ZONE_WRITE_LOCKED. This new BIO flag is
reserved for now for zone write locking control for device mapper
targets exposing a zoned block device.
Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
---
include/linux/blk_types.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index db026b6ec15a..e5cf12f102a2 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -304,6 +304,7 @@ enum {
BIO_CGROUP_ACCT, /* has been accounted to a cgroup */
BIO_TRACKED, /* set if bio goes through the rq_qos path */
BIO_REMAPPED,
+ BIO_ZONE_WRITE_LOCKED, /* Owns a zoned device zone write lock */
BIO_FLAG_LAST
};
--
2.31.1
