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block: move make_it_fail to struct block_device

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Move the make_it_fail flag to struct block_device an turn it into a bool
in preparation of killing struct hd_struct.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-11-23 16:28:47 +01:00 committed by Jens Axboe
parent 1bdd5ae025
commit b309e99363
4 changed files with 7 additions and 6 deletions
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3
block/blk-core.c
View File

@ -668,7 +668,8 @@ __setup("fail_make_request=", setup_fail_make_request);
static bool should_fail_request(struct hd_struct *part, unsigned int bytes)
{
return part->make_it_fail && should_fail(&fail_make_request, bytes);
return part->bdev->bd_make_it_fail &&
should_fail(&fail_make_request, bytes);
}
static int __init fail_make_request_debugfs(void)

4
block/genhd.c
View File

@ -1292,7 +1292,7 @@ ssize_t part_fail_show(struct device *dev,
{
struct hd_struct *p = dev_to_part(dev);
return sprintf(buf, "%d\n", p->make_it_fail);
return sprintf(buf, "%d\n", p->bdev->bd_make_it_fail);
}
ssize_t part_fail_store(struct device *dev,
@ -1303,7 +1303,7 @@ ssize_t part_fail_store(struct device *dev,
int i;
if (count > 0 && sscanf(buf, "%d", &i) > 0)
p->make_it_fail = (i == 0) ? 0 : 1;
p->bdev->bd_make_it_fail = i;
return count;
}

3
include/linux/blk_types.h
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@ -52,6 +52,9 @@ struct block_device {
struct super_block *bd_fsfreeze_sb;
struct partition_meta_info *bd_meta_info;
#ifdef CONFIG_FAIL_MAKE_REQUEST
bool bd_make_it_fail;
#endif
} __randomize_layout;
#define bdev_whole(_bdev) \

3
include/linux/genhd.h
View File

@ -56,9 +56,6 @@ struct hd_struct {
struct block_device *bdev;
struct device __dev;
int policy, partno;
#ifdef CONFIG_FAIL_MAKE_REQUEST
int make_it_fail;
#endif
struct rcu_work rcu_work;
};