Commit d8f07aee authored by Dan Williams's avatar Dan Williams
Browse files

block: kill bdev_dax_capable() 



This is leftover dead code that has since been replaced by
bdev_dax_supported().

Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 7a2765f6

fs/block_dev.c

+0 −24
Original line number Diff line number Diff line
@@ -807,30 +807,6 @@ int bdev_dax_supported(struct super_block *sb, int blocksize) 
}

EXPORT_SYMBOL_GPL(bdev_dax_supported);



/**

 * bdev_dax_capable() - Return if the raw device is capable for dax

 * @bdev: The device for raw block device access

 */

bool bdev_dax_capable(struct block_device *bdev)

{

	struct blk_dax_ctl dax = {

		.size = PAGE_SIZE,

	};



	if (!IS_ENABLED(CONFIG_FS_DAX))

		return false;



	dax.sector = 0;

	if (bdev_direct_access(bdev, &dax) < 0)

		return false;



	dax.sector = bdev->bd_part->nr_sects - (PAGE_SIZE / 512);

	if (bdev_direct_access(bdev, &dax) < 0)

		return false;



	return true;

}



/*

 * pseudo-fs

 */

include/linux/blkdev.h

+0 −1
Original line number Diff line number Diff line
@@ -1958,7 +1958,6 @@ extern int bdev_write_page(struct block_device *, sector_t, struct page *, 
						struct writeback_control *);

extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *);

extern int bdev_dax_supported(struct super_block *, int);

extern bool bdev_dax_capable(struct block_device *);

#else /* CONFIG_BLOCK */



struct block_device;