The patch titled
Subject: mincore: add support for PUDs
has been added to the -mm tree. Its filename is
mincore-add-support-for-puds.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mincore-add-support-for-puds.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mincore-add-support-for-puds.patch
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------------------------------------------------------
From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Subject: mincore: add support for PUDs
We don't actually care about the contents of the PUD, as long as it's
present (which is checked by the pagewalk code), so just set the bits to
indicate presence and return.
Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Cc: mingming cao <mingming.cao@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mincore.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff -puN mm/mincore.c~mincore-add-support-for-puds mm/mincore.c
--- a/mm/mincore.c~mincore-add-support-for-puds
+++ a/mm/mincore.c
@@ -108,6 +108,18 @@ static int mincore_unmapped_range(unsign
return 0;
}
+static int mincore_pud_range(pud_t *pud, unsigned long addr, unsigned long end,
+ struct mm_walk *walk)
+{
+ unsigned char *vec = walk->private;
+ int nr = (end - addr) >> PAGE_SHIFT;
+
+ memset(vec, 1, nr);
+ walk->private += nr;
+
+ return 0;
+}
+
static int mincore_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
@@ -177,6 +189,7 @@ static long do_mincore(unsigned long add
unsigned long end;
int err;
struct mm_walk mincore_walk = {
+ .pud_entry = mincore_pud_range,
.pmd_entry = mincore_pte_range,
.pte_hole = mincore_unmapped_range,
.hugetlb_entry = mincore_hugetlb,
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxxxx are
mm-convert-an-open-coded-vm_bug_on_vma.patch
mmfsdax-change-pmd_fault-to-huge_fault.patch
mm-add-support-for-pud-sized-transparent-hugepages.patch
mincore-add-support-for-puds.patch
procfs-add-support-for-puds-to-smaps-clear_refs-and-pagemap.patch
x86-add-support-for-pud-sized-transparent-hugepages.patch
dax-support-for-transparent-pud-pages.patch
ext4-support-for-pud-sized-transparent-huge-pages.patch
radix-tree-add-an-explicit-include-of-bitopsh.patch
radix-tree-test-harness.patch
radix_tree-tag-all-internal-tree-nodes-as-indirect-pointers.patch
radix_tree-loop-based-on-shift-count-not-height.patch
radix_tree-add-support-for-multi-order-entries.patch
radix_tree-add-radix_tree_dump.patch
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