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block: kill bdev_dax_capable()

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This is leftover dead code that has since been replaced by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

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2017-01-26 23:30:05 -08:00
parent 7a2765f6e8
commit d8f07aee3f
2 changed files with 0 additions and 25 deletions
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24
fs/block_dev.c
View file

@ -807,30 +807,6 @@ int bdev_dax_supported(struct super_block *sb, int blocksize)
} }
EXPORT_SYMBOL_GPL(bdev_dax_supported); 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 * pseudo-fs
*/ */

1
include/linux/blkdev.h
View file

@ -1958,7 +1958,6 @@ extern int bdev_write_page(struct block_device *, sector_t, struct page *,
struct writeback_control *); struct writeback_control *);
extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *); extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *);
extern int bdev_dax_supported(struct super_block *, int); extern int bdev_dax_supported(struct super_block *, int);
extern bool bdev_dax_capable(struct block_device *);
#else /* CONFIG_BLOCK */ #else /* CONFIG_BLOCK */
struct block_device; struct block_device;