Subject: [merged] thp-move-maybe_pmd_mkwrite-out-of-mk_huge_pmd.patch removed from -mm tree
To: kirill.shutemov@xxxxxxxxxxxxxxx,aarcange@xxxxxxxxxx,ak@xxxxxxxxxxxxxxx,dave.hansen@xxxxxxxxxxxxxxx,dhillf@xxxxxxxxx,fengguang.wu@xxxxxxxxx,hughd@xxxxxxxxxx,jack@xxxxxxx,mgorman@xxxxxxx,viro@xxxxxxxxxxxxxxxxxx,willy@xxxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 13 Sep 2013 13:02:58 -0700
The patch titled
Subject: thp: move maybe_pmd_mkwrite() out of mk_huge_pmd()
has been removed from the -mm tree. Its filename was
thp-move-maybe_pmd_mkwrite-out-of-mk_huge_pmd.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: thp: move maybe_pmd_mkwrite() out of mk_huge_pmd()
It's confusing that mk_huge_pmd() has semantics different from mk_pte() or
mk_pmd(). I spent some time on debugging issue cased by this
inconsistency.
Let's move maybe_pmd_mkwrite() out of mk_huge_pmd() and adjust prototype
to match mk_pte().
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Cc: Hillf Danton <dhillf@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff -puN mm/huge_memory.c~thp-move-maybe_pmd_mkwrite-out-of-mk_huge_pmd mm/huge_memory.c
--- a/mm/huge_memory.c~thp-move-maybe_pmd_mkwrite-out-of-mk_huge_pmd
+++ a/mm/huge_memory.c
@@ -690,11 +690,10 @@ pmd_t maybe_pmd_mkwrite(pmd_t pmd, struc
return pmd;
}
-static inline pmd_t mk_huge_pmd(struct page *page, struct vm_area_struct *vma)
+static inline pmd_t mk_huge_pmd(struct page *page, pgprot_t prot)
{
pmd_t entry;
- entry = mk_pmd(page, vma->vm_page_prot);
- entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
+ entry = mk_pmd(page, prot);
entry = pmd_mkhuge(entry);
return entry;
}
@@ -727,7 +726,8 @@ static int __do_huge_pmd_anonymous_page(
pte_free(mm, pgtable);
} else {
pmd_t entry;
- entry = mk_huge_pmd(page, vma);
+ entry = mk_huge_pmd(page, vma->vm_page_prot);
+ entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
page_add_new_anon_rmap(page, vma, haddr);
pgtable_trans_huge_deposit(mm, pmd, pgtable);
set_pmd_at(mm, haddr, pmd, entry);
@@ -1210,7 +1210,8 @@ alloc:
goto out_mn;
} else {
pmd_t entry;
- entry = mk_huge_pmd(new_page, vma);
+ entry = mk_huge_pmd(new_page, vma->vm_page_prot);
+ entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
pmdp_clear_flush(vma, haddr, pmd);
page_add_new_anon_rmap(new_page, vma, haddr);
set_pmd_at(mm, haddr, pmd, entry);
@@ -2358,7 +2359,8 @@ static void collapse_huge_page(struct mm
__SetPageUptodate(new_page);
pgtable = pmd_pgtable(_pmd);
- _pmd = mk_huge_pmd(new_page, vma);
+ _pmd = mk_huge_pmd(new_page, vma->vm_page_prot);
+ _pmd = maybe_pmd_mkwrite(pmd_mkdirty(_pmd), vma);
/*
* spin_lock() below is not the equivalent of smp_wmb(), so
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
origin.patch
thp-mm-locking-tail-page-is-a-bug.patch
thp-mm-locking-tail-page-is-a-bug-fix.patch
mm-drop-actor-argument-of-do_generic_file_read.patch
mm-drop-actor-argument-of-do_generic_file_read-fix.patch
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