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Set proper multiqueue flags

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Setting BLK_MQ_F_STACKING (to indicate stacked device) and
BLK_MQ_F_BLOCKING (to indicate potentially blocking operations
like acquiring mutex or GFP_NOIO allocations).

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski 2021-04-16 22:29:25 -05:00
parent c46c638e2e
commit 9c08ed4b87
2 changed files with 35 additions and 1 deletions
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34
configure.d/1_mq_flags.conf Normal file
View File

@ -0,0 +1,34 @@
#!/bin/bash
#
# Copyright(c) 2012-2021 Intel Corporation
# SPDX-License-Identifier: BSD-3-Clause-Clear
#
. $(dirname $3)/conf_framework
check() {
cur_name=$(basename $2)
config_file_path=$1
if compile_module $cur_name "BLK_MQ_F_STACKING " "linux/blk-mq.h"
then
echo $cur_name "1" >> $config_file_path
else
echo $cur_name "2" >> $config_file_path
fi
}
apply() {
case "$1" in
"1")
add_define "CAS_BLK_MQ_F_STACKING \\
BLK_MQ_F_STACKING"
;;
"2")
add_define "CAS_BLK_MQ_F_STACKING 0"
;;
*)
exit 1
esac
}
conf_run $@

2
modules/cas_disk/exp_obj.c
View File

@ -526,7 +526,7 @@ static int _casdsk_init_tag_set(struct casdsk_disk *dsk, struct blk_mq_tag_set *
set->queue_depth = BLKDEV_MAX_RQ;
set->cmd_size = 0;
set->flags = BLK_MQ_F_SHOULD_MERGE;
set->flags = BLK_MQ_F_SHOULD_MERGE | CAS_BLK_MQ_F_STACKING | BLK_MQ_F_BLOCKING;
set->driver_data = dsk;