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>
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 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 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 @@
__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;