linux-kernel - [PATCH v2 0/2] mm, smaps: MMUPageSize for device-dax

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Date:   Fri, 09 Feb 2018 17:38:21 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, dan.j.williams@...el.com,
        linux-nvdimm@...ts.01.org, linux-kernel@...r.kernel.org,
        mhocko@...nel.org
Subject: [PATCH v2 0/2] mm, smaps: MMUPageSize for device-dax

Andrew,

>>From Dan Williams:
Here is another occasion where we want special-case hugetlbfs enabling
to also apply to device-dax. I started to wonder what other hstate
conversions we might do beyond ->split() and ->pagesize(), but this
appears to be the last of the usages of hstate_vma() in
generic/non-hugetlbfs specific code paths.

v2:
I fixed up the powerpc build issue that Michal reported by restoring the
original location of the function and making the symbol weak.

---

Dan Williams (2):
      mm, hugetlbfs: introduce ->pagesize() to vm_operations_struct
      device-dax: implement ->pagesize() for smaps to report MMUPageSize


 arch/powerpc/mm/hugetlbpage.c |    5 +----
 drivers/dax/device.c          |   10 ++++++++++
 include/linux/mm.h            |    1 +
 mm/hugetlb.c                  |   23 ++++++++++++-----------
 4 files changed, 24 insertions(+), 15 deletions(-)

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