From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kirill A. Shutemov" Subject: [PATCHv2, RFC 29/30] thp: call __vma_adjust_trans_huge() for file-backed VMA Date: Thu, 14 Mar 2013 19:50:34 +0200 Message-ID: <1363283435-7666-30-git-send-email-kirill.shutemov@linux.intel.com> References: <1363283435-7666-1-git-send-email-kirill.shutemov@linux.intel.com> Cc: Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Andi Kleen , Matthew Wilcox , "Kirill A. Shutemov" , Hillf Danton , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" To: Andrea Arcangeli , Andrew Morton , Al Viro , Hugh Dickins Return-path: In-Reply-To: <1363283435-7666-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-Id: linux-fsdevel.vger.kernel.org From: "Kirill A. Shutemov" Since we're going to have huge pages in page cache, we need to call __vma_adjust_trans_huge() for file-backed VMA, which potentially can contain huge pages. For now we call it for all VMAs with vm_ops->huge_fault defined. Probably later we will need to introduce a flag to indicate that the VMA has huge pages. Signed-off-by: Kirill A. Shutemov --- include/linux/huge_mm.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index aa52c48..c6e3aef 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -161,9 +161,9 @@ static inline void vma_adjust_trans_huge(struct vm_area_struct *vma, unsigned long end, long adjust_next) { - if (!vma->anon_vma || vma->vm_ops) - return; - __vma_adjust_trans_huge(vma, start, end, adjust_next); + if ((vma->anon_vma && !vma->vm_ops) || + (vma->vm_ops && vma->vm_ops->huge_fault)) + __vma_adjust_trans_huge(vma, start, end, adjust_next); } static inline int hpage_nr_pages(struct page *page) { -- 1.7.10.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org