Re: [PATCH 2/2] mm: THP page cache support for ppc64
From: Kirill A. Shutemov <hidden>
Date: 2016-11-11 10:15:22
Also in:
linux-mm, lkml
On Mon, Nov 07, 2016 at 02:04:41PM +0530, Aneesh Kumar K.V wrote:
quoted hunk ↗ jump to hunk
@@ -2953,6 +2966,13 @@ static int do_set_pmd(struct fault_env *fe, struct page *page) ret = VM_FAULT_FALLBACK; page = compound_head(page); + /* + * Archs like ppc64 need additonal space to store information + * related to pte entry. Use the preallocated table for that. + */ + if (arch_needs_pgtable_deposit() && !fe->prealloc_pte) + fe->prealloc_pte = pte_alloc_one(vma->vm_mm, fe->address); +
-ENOMEM handling? I think we should do this way before this point. Maybe in do_fault() or something. -- Kirill A. Shutemov