The patch titled
Subject: device-dax: use ALIGN() for determining pgoff
has been added to the -mm tree. Its filename is
device-dax-use-align-for-determining-pgoff.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/device-dax-use-align-for-determining-pgoff.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/device-dax-use-align-for-determining-pgoff.patch
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------------------------------------------------------
From: Joao Martins <joao.m.martins@xxxxxxxxxx>
Subject: device-dax: use ALIGN() for determining pgoff
Rather than calculating @pgoff manually, switch to ALIGN() instead.
Link: https://lkml.kernel.org/r/20211202204422.26777-6-joao.m.martins@xxxxxxxxxx
Suggested-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Joao Martins <joao.m.martins@xxxxxxxxxx>
Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Dave Jiang <dave.jiang@xxxxxxxxx>
Cc: Jane Chu <jane.chu@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Cc: Vishal Verma <vishal.l.verma@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/dax/device.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/dax/device.c~device-dax-use-align-for-determining-pgoff
+++ a/drivers/dax/device.c
@@ -234,8 +234,8 @@ static vm_fault_t dev_dax_huge_fault(str
* mapped. No need to consider the zero page, or racing
* conflicting mappings.
*/
- pgoff = linear_page_index(vmf->vma, vmf->address
- & ~(fault_size - 1));
+ pgoff = linear_page_index(vmf->vma,
+ ALIGN(vmf->address, fault_size));
for (i = 0; i < fault_size / PAGE_SIZE; i++) {
struct page *page;
_
Patches currently in -mm which might be from joao.m.martins@xxxxxxxxxx are
mm-page_alloc-split-prep_compound_page-into-head-and-tail-subparts.patch
mm-page_alloc-refactor-memmap_init_zone_device-page-init.patch
mm-memremap-add-zone_device-support-for-compound-pages.patch
device-dax-use-align-for-determining-pgoff.patch
device-dax-use-struct_size.patch
device-dax-ensure-dev_dax-pgmap-is-valid-for-dynamic-devices.patch
device-dax-factor-out-page-mapping-initialization.patch
device-dax-set-mapping-prior-to-vmf_insert_pfn_pmdpud.patch
device-dax-remove-pfn-from-__dev_dax_ptepmdpud_fault.patch
device-dax-compound-devmap-support.patch
