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configure/bd_part_count: adapt to kernel 5.12

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Moved cas_blk_get_part_count function to configure section after the
the disk's partitions table was changed to xarray.

Signed-off-by: Gal Hammer <gal.hammer@huawei.com>
Signed-off-by: Shai Fultheim <shai.fultheim@huawei.com>
This commit is contained in:
Gal Hammer
2022-01-30 11:30:05 +02:00
committed by Robert Baldyga
parent fea5e72d8c
commit 4bb435555f
4 changed files with 61 additions and 37 deletions
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22
modules/cas_cache/utils/utils_blk.c
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@@ -1,22 +0,0 @@
/*
* Copyright(c) 2012-2021 Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "utils_blk.h"
int cas_blk_get_part_count(struct block_device *bdev)
{
struct disk_part_tbl *ptbl;
int i, count = 0;
rcu_read_lock();
ptbl = rcu_dereference(bdev->bd_disk->part_tbl);
for (i = 0; i < ptbl->len; ++i) {
if (rcu_access_pointer(ptbl->part[i]))
count++;
}
rcu_read_unlock();
return count;
}

14
modules/cas_cache/utils/utils_blk.h
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@@ -1,14 +0,0 @@
/*
* Copyright(c) 2012-2021 Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef UTILS_BLK_H_
#define UTILS_BLK_H_
#include <linux/fs.h>
#include <linux/genhd.h>
int cas_blk_get_part_count(struct block_device *bdev);
#endif /* UTILS_BLK_H_ */