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authorAaron Tomlin <atomlin@redhat.com>2015-11-06 16:28:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-06 17:50:42 -0800
commitd6669d689f397137381fe6729293e0eba1ef09a8 (patch)
tree0976e0e7bfa0490b38bd40d90dc7b9a9be535fa2 /mm
parentc62d25556be6c965dc14288e796a576e8e39a7e9 (diff)
downloadop-kernel-dev-d6669d689f397137381fe6729293e0eba1ef09a8.zip
op-kernel-dev-d6669d689f397137381fe6729293e0eba1ef09a8.tar.gz
thp: remove unused vma parameter from khugepaged_alloc_page
The "vma" parameter to khugepaged_alloc_page() is unused. It has to remain unused or the drop read lock 'map_sem' optimisation introduce by commit 8b1645685acf ("mm, THP: don't hold mmap_sem in khugepaged when allocating THP") wouldn't be safe. So let's remove it. Signed-off-by: Aaron Tomlin <atomlin@redhat.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/huge_memory.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index dabd247..73266ee 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2413,8 +2413,7 @@ static bool khugepaged_prealloc_page(struct page **hpage, bool *wait)
static struct page *
khugepaged_alloc_page(struct page **hpage, gfp_t gfp, struct mm_struct *mm,
- struct vm_area_struct *vma, unsigned long address,
- int node)
+ unsigned long address, int node)
{
VM_BUG_ON_PAGE(*hpage, *hpage);
@@ -2481,8 +2480,7 @@ static bool khugepaged_prealloc_page(struct page **hpage, bool *wait)
static struct page *
khugepaged_alloc_page(struct page **hpage, gfp_t gfp, struct mm_struct *mm,
- struct vm_area_struct *vma, unsigned long address,
- int node)
+ unsigned long address, int node)
{
up_read(&mm->mmap_sem);
VM_BUG_ON(!*hpage);
@@ -2530,7 +2528,7 @@ static void collapse_huge_page(struct mm_struct *mm,
__GFP_THISNODE;
/* release the mmap_sem read lock. */
- new_page = khugepaged_alloc_page(hpage, gfp, mm, vma, address, node);
+ new_page = khugepaged_alloc_page(hpage, gfp, mm, address, node);
if (!new_page)
return;
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