[patch] mm: vmscan implement per-zone shrinkers

Hi, I'm doing some works that require per-zone shrinkers, I'd like to get the vmscan part signed off and merged by interested mm people, please. [And before anybody else kindly suggests per-node shrinkers, please go back and read all the ...

Message posted on the November 9th, 2010 - 7:40 AM ET

[RFC PATCH 0/5] Reduce filesystem writeback from page reclaim (again)

(Revisting this from a year ago and following on from the thread "Re: [PATCH 03/27] xfs: use write_cache_pages for writeback clustering". Posting an prototype to see if anything obvious is being missed) Testing from the XFS folk revealed ...

Message posted on the July 13th, 2011 - 10:40 AM ET

[PATCH 0/8] Reduce latencies and improve overall reclaim efficiency v2

This is v2 of a series to reduce some of the latencies seen in page reclaim and to improve the efficiency a bit. There are a number of changes in this revision. The first is to drop the patches avoiding writeback from direct reclaim again. Wu asked ...

Message posted on the September 15th, 2010 - 8:40 AM ET

[PATCH] page_alloc: fix the incorrect adjustment to zone->present_pages

Current free_area_init_core() has incorrect adjustment code to adjust ->present_pages. It will cause ->present_pages overflow, make the system unusable(can't create any process/thread in our test) and cause further problem. Details: 1) ...

Message posted on the October 26th, 2012 - 6:00 AM ET

[RFC PATCH 0/2] Prioritise inodes and zones for writeback required by page reclaim

Commenting on the series "Reduce writeback from page reclaim context V6" Andrew Morton noted; direct-reclaim wants to write a dirty page because that page is in the zone which the caller wants to allocate from! Telling the flusher ...

Message posted on the August 4th, 2010 - 10:40 AM ET

[RFC 0/5] Consider higher small zone and mmaped-pages stream

This patchset solves two problem. 1. higher small memory zone - [2] and [3] 2. mmaped-pages stream reclaim efficiency [5] [1] and [4] is minor fix which isn't related with this series so it could be apply separately. I wrote down each problem in ...

Message posted on the August 22nd, 2012 - 3:20 AM ET

[PATCH] vmscan: check all_unreclaimable in direct reclaim path

M. Vefa Bicakci reported 2.6.35 kernel hang up when hibernation on his 32bit 3GB mem machine. (https://bugzilla.kernel.org/show_bug.cgi?id771) Also he was bisected first bad commit is below commit bb21c7ce18eff8e6e7877ca1d06c6db719376e3c Author: ...

Message posted on the September 5th, 2010 - 10:50 AM ET

[PATCH] mm: disallow direct reclaim page writeback

From: Dave Chinner <dchinner@redhat.com> When we enter direct reclaim we may have used an arbitrary amount of stack space, and hence enterring the filesystem to do writeback can then lead to stack overruns. This problem was recently ...

Message posted on the April 12th, 2010 - 9:30 PM ET

[PATCH 0/6] Reduce writeback from page reclaim context V6

This is a follow-on series from "Avoid overflowing of stack during page reclaim". It eliminates writeback requiring a filesystem from direct reclaim and follows on by reducing the amount of IO required from page reclaim to mitigate any ...

Message posted on the July 30th, 2010 - 9:40 AM ET

[PATCH 0/9] Reduce writeback from page reclaim context V5

This is a follow-on series from "Avoid overflowing of stack during page reclaim". It eliminates writeback requiring a filesystem from direct reclaim and follows on by reducing the amount of IO required from page reclaim to mitigate any ...

Message posted on the July 28th, 2010 - 6:30 AM ET

[PATCH 0/8] Reduce writeback from page reclaim context V4

Sorry for the long delay, I got side-tracked on other bugs. This is a follow-on series from the series "Avoid overflowing of stack during page reclaim". It eliminates writeback requiring a filesystem from direct reclaim and follows on by ...

Message posted on the July 19th, 2010 - 9:20 AM ET

[patch] vmscan: fix zone shrinking exit when scan work is done

Hi, I think this should fix the problem of processes getting stuck in reclaim that has been reported several times. Kent actually single-stepped through this code and noted that it was never exiting shrink_zone(), which really narrowed it down a ...

Message posted on the February 9th, 2011 - 10:50 AM ET

[PATCH 0/7] Reduce filesystem writeback from page reclaim v3

Changelog since V2 o Drop patch eliminating all writes from kswapd until such time as particular pages can be prioritised for writeback. Eliminating all writes led to stalls on NUMA o Lumpy synchronous reclaim now waits for pages currently under ...

Message posted on the August 10th, 2011 - 6:50 AM ET

[PATCH 0/2] Avoid excessive reclaim due to THP

The thread "[PATCH v2 -mm] limit direct reclaim for higher order allocations" went silent so this is an attempt to kick it awake again to close it. Rik noticed that there was too much memory free on his machine when THP was running and ...

Message posted on the October 7th, 2011 - 11:20 AM ET

problem zone reclaim