Re: mm: pages are not freed from lru_add_pvecs after process termination
From: Kirill A. Shutemov <hidden>
Date: 2016-05-02 16:03:03
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On Mon, May 02, 2016 at 08:49:03AM -0700, Dave Hansen wrote:
On 05/02/2016 08:01 AM, Kirill A. Shutemov wrote:quoted
On Mon, May 02, 2016 at 04:39:35PM +0200, Vlastimil Babka wrote:quoted
On 04/27/2016 07:11 PM, Dave Hansen wrote:quoted
6. Perhaps don't use the LRU pagevecs for large pages. It limits the severity of the problem.I think that makes sense. Being large already amortizes the cost per base page much more than pagevecs do (512 vs ~22 pages?).We try to do this already, don't we? Any spefic case where we have THPs on pagevecs?Lukas was hitting this on a RHEL 7 era kernel. In his kernel at least, I'm pretty sure THP's were ending up on pagevecs. Are you saying you don't think we're doing that any more?
As Vlastimil pointed, we do. It need to be fixed, I think. Any volunteer? :-P -- Kirill A. Shutemov -- 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: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>