[lkml]   [2018]   [Jan]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] mm, page_vma_mapped: Introduce pfn_in_hpage()
On Mon, Jan 22, 2018 at 1:22 AM, Kirill A. Shutemov
<> wrote:
> The new helper would check if the pfn belongs to the page. For huge
> pages it checks if the PFN is within range covered by the huge page.
> The helper is used in check_pte(). The original code the helper replaces
> had two call to page_to_pfn(). page_to_pfn() is relatively costly.
> Although current GCC is able to optimize code to have one call, it's
> better to do this explicitly.

Thanks, I applied it directly, since your page_vma_mapped fix was
still my top commit, and I asked for this cleanup.


 \ /
  Last update: 2018-01-22 21:17    [W:0.029 / U:6.304 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site