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block: move bdev_read_only() into the header

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This is called for every write in the fast path, move it inline next
to get_disk_ro() which is called internally.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2021-10-06 06:15:04 -06:00
parent e0d78afeb8
commit db9a02baa2
2 changed files with 5 additions and 6 deletions
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6
block/genhd.c
View File

@ -1389,12 +1389,6 @@ void set_disk_ro(struct gendisk *disk, bool read_only)
} }
EXPORT_SYMBOL(set_disk_ro); EXPORT_SYMBOL(set_disk_ro);
int bdev_read_only(struct block_device *bdev)
{
return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
}
EXPORT_SYMBOL(bdev_read_only);
void inc_diskseq(struct gendisk *disk) void inc_diskseq(struct gendisk *disk)
{ {
disk->diskseq = atomic64_inc_return(&diskseq); disk->diskseq = atomic64_inc_return(&diskseq);

5
include/linux/genhd.h
View File

@ -221,6 +221,11 @@ static inline int get_disk_ro(struct gendisk *disk)
test_bit(GD_READ_ONLY, &disk->state); test_bit(GD_READ_ONLY, &disk->state);
} }
static inline int bdev_read_only(struct block_device *bdev)
{
return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
}
extern void disk_block_events(struct gendisk *disk); extern void disk_block_events(struct gendisk *disk);
extern void disk_unblock_events(struct gendisk *disk); extern void disk_unblock_events(struct gendisk *disk);
extern void disk_flush_events(struct gendisk *disk, unsigned int mask); extern void disk_flush_events(struct gendisk *disk, unsigned int mask);