Commit 44788591 authored by Ira Weiny's avatar Ira Weiny Committed by Dan Williams
Browse files

fs/dax: Clarify nr_pages to dax_direct_access() 



dax_direct_access() takes a number of pages.  PHYS_PFN(PAGE_SIZE) is a
very round about way to specify '1'.

Change the nr_pages parameter to the explicit value of '1'.

Reviewed-by: default avatarDan Williams <dan.j.williams@intel.com>
Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20210525172428.3634316-3-ira.weiny@intel.com


Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 2e29be2e

fs/dax.c

+1 −1
Original line number Diff line number Diff line
@@ -721,7 +721,7 @@ static int copy_cow_page_dax(struct block_device *bdev, struct dax_device *dax_d 
		return rc;



	id = dax_read_lock();

	rc = dax_direct_access(dax_dev, pgoff, PHYS_PFN(PAGE_SIZE), &kaddr, NULL);

	rc = dax_direct_access(dax_dev, pgoff, 1, &kaddr, NULL);

	if (rc < 0) {

		dax_read_unlock(id);

		return rc;