a1629790af
The comment was remved in 1e5355eba1
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@huawei.com>
123 lines
3.9 KiB
Bash
123 lines
3.9 KiB
Bash
#!/bin/bash
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#
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# Copyright(c) 2012-2022 Intel Corporation
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# Copyright(c) 2024 Huawei Technologies
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# SPDX-License-Identifier: BSD-3-Clause
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#
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. $(dirname $3)/conf_framework.sh
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# RHEL 7.3
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check() {
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cur_name=$(basename $2)
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config_file_path=$1
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if compile_module $cur_name "struct queue_limits q; q.limits_aux;" "linux/blkdev.h"
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then
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echo $cur_name "1" >> $config_file_path
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elif compile_module $cur_name "struct queue_limits q; q.max_write_zeroes_sectors;" "linux/blkdev.h"
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then
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if compile_module $cur_name "struct queue_limits q; q.max_write_same_sectors;" "linux/blkdev.h"
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then
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echo $cur_name "2" >> $config_file_path
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else
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echo $cur_name "3" >> $config_file_path
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fi
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elif compile_module $cur_name "struct queue_limits q; q.max_write_same_sectors;" "linux/blkdev.h"
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then
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echo $cur_name "4" >> $config_file_path
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else
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echo $cur_name "X" >> $config_file_path
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fi
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}
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apply() {
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case "$1" in
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"1")
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add_function "
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static inline void cas_copy_queue_limits(struct request_queue *exp_q,
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struct queue_limits *cache_q_limits, struct request_queue *core_q)
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{
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struct queue_limits_aux *l_aux = exp_q->limits.limits_aux;
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exp_q->limits = *cache_q_limits;
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exp_q->limits.limits_aux = l_aux;
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if (exp_q->limits.limits_aux && cache_q_limits->limits_aux)
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*exp_q->limits.limits_aux = *cache_q_limits->limits_aux;
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exp_q->limits.max_sectors = core_q->limits.max_sectors;
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exp_q->limits.max_hw_sectors = core_q->limits.max_hw_sectors;
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exp_q->limits.max_segments = core_q->limits.max_segments;
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exp_q->limits.max_write_same_sectors = 0;
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}"
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# A workaround for RHEL/CentOS 7.3 bug in kernel.
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# Merging implementation on blk-mq does not respect virt boundary
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# restriction and front merges bios with non-zero offsets.
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# This leads to request with gaps between bios and in consequence
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# triggers BUG_ON() in nvme driver or silently corrupts data.
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# To prevent this, disable merging on cache queue if there are
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# requirements regarding virt boundary (marking bios with REQ_NOMERGE
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# does not solve this problem).
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add_function "
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static inline void cas_cache_set_no_merges_flag(struct request_queue *cache_q)
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{
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if (queue_virt_boundary(cache_q))
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queue_flag_set(QUEUE_FLAG_NOMERGES, cache_q);
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}" ;;
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"2")
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add_function "
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static inline void cas_copy_queue_limits(struct request_queue *exp_q,
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struct queue_limits *cache_q_limits, struct request_queue *core_q)
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{
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exp_q->limits = *cache_q_limits;
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exp_q->limits.max_sectors = core_q->limits.max_sectors;
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exp_q->limits.max_hw_sectors = core_q->limits.max_hw_sectors;
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exp_q->limits.max_segments = core_q->limits.max_segments;
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exp_q->limits.max_write_same_sectors = 0;
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exp_q->limits.max_write_zeroes_sectors = 0;
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}"
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add_function "
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static inline void cas_cache_set_no_merges_flag(struct request_queue *cache_q)
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{
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}" ;;
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"3")
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add_function "
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static inline void cas_copy_queue_limits(struct request_queue *exp_q,
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struct queue_limits *cache_q_limits, struct request_queue *core_q)
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{
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exp_q->limits = *cache_q_limits;
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exp_q->limits.max_sectors = core_q->limits.max_sectors;
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exp_q->limits.max_hw_sectors = core_q->limits.max_hw_sectors;
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exp_q->limits.max_segments = core_q->limits.max_segments;
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exp_q->limits.max_write_zeroes_sectors = 0;
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}"
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add_function "
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static inline void cas_cache_set_no_merges_flag(struct request_queue *cache_q)
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{
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}" ;;
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"4")
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add_function "
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static inline void cas_copy_queue_limits(struct request_queue *exp_q,
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struct queue_limits *cache_q_limits, struct request_queue *core_q)
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{
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exp_q->limits = *cache_q_limits;
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exp_q->limits.max_sectors = core_q->limits.max_sectors;
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exp_q->limits.max_hw_sectors = core_q->limits.max_hw_sectors;
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exp_q->limits.max_segments = core_q->limits.max_segments;
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exp_q->limits.max_write_same_sectors = 0;
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}"
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add_function "
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static inline void cas_cache_set_no_merges_flag(struct request_queue *cache_q)
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{
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}" ;;
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*)
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exit 1
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esac
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}
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conf_run $@
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