dm: Remove max_write_zeroes_granularity

The max_write_zeroes_granularity boolean of struct dm_target is used in
__process_abnormal_io() but never set by any target. Remove this field
and the dead code using it.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 3763b2ce557b0befd349bbfe08c4948a8744314b..a63efa2a46aef008d7b3c43cb7dd021d60694ad4 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1664,8 +1664,6 @@ static blk_status_t __process_abnormal_io(struct clone_info *ci,
        case REQ_OP_WRITE_ZEROES:
                num_bios = ti->num_write_zeroes_bios;
                max_sectors = limits->max_write_zeroes_sectors;
-               if (ti->max_write_zeroes_granularity)
-                       max_granularity = max_sectors;
                break;
        default:
                break;

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 3611b230d0aa24977f7d23dade06eb7516c2b43e..5b7e96653ec6e3985d2ce1ab6353087b93be5b37 100644 (file)
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -369,12 +369,6 @@ struct dm_target {
         */
        bool max_secure_erase_granularity:1;
 
-       /*
-        * Set if this target requires that write_zeroes be split on
-        * 'max_write_zeroes_sectors' boundaries.
-        */
-       bool max_write_zeroes_granularity:1;
-
        /*
         * Set if we need to limit the number of in-flight bios when swapping.
         */