Commit db9a02ba authored Oct 06, 2021 by Jens Axboe

block: move bdev_read_only() into the header



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>

parent e0d78afe

block/genhd.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -1389,12 +1389,6 @@ void set_disk_ro(struct gendisk *disk, bool read_only)
		}
		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)
		{
		disk->diskseq = atomic64_inc_return(&diskseq);

include/linux/genhd.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -221,6 +221,11 @@ static inline int get_disk_ro(struct gendisk *disk)
		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_unblock_events(struct gendisk *disk);
		extern void disk_flush_events(struct gendisk *disk, unsigned int mask);