Re: [Qemu-devel] [PATCH] mm: hugetlb: initialize PG_reserved for tail pages of gigantig compound pages

corrects the gigantic compound page initialization so that > we can retain the optimization in > 11feeb498086a3a5907b8148bdf1786a9b18fc55. The cacheline was already > modified in order to set PG_tail so this won't affect the boot time of > large memory systems. > > Report

Re: [Qemu-devel] [PATCH 6/9] mm: compaction: Acquire the zone->lock as late as possible

ock for as long as possible. In the > event there are no free pages in the pageblock then the lock will not be > acquired at all which reduces contention on zone->lock. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 8/9] mm: compaction: Cache if a pageblock was scanned and no pages were isolated

Waiting until memory pressure is relieved would > cause compaction to continually fail instead of using reclaim/compaction > to try allocate the page. The time-based mechanism is clumsy but a better > option is not obvious. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 3/9] Revert "mm: compaction: abort compaction loop if lock is contended or run too long"

On Fri, Sep 21, 2012 at 11:46:17AM +0100, Mel Gorman wrote: > This reverts > mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch > as it is replaced by a later patch in the series. > > Signed-off-by: Mel Gorman Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 9/9] mm: compaction: Restart compaction from near where it left off

t points and will > update the cached restart points until a page is isolated or a pageblock > is skipped that would have been scanned by synchronous compaction. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 4/9] mm: compaction: Abort compaction loop if lock is contended or run too long

Arcangeli > Signed-off-by: Shaohua Li > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 7/9] Revert "mm: have order > 0 compaction start off where it left"

nners. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 5/9] mm: compaction: Acquire the zone->lru_lock as late as possible

r as long as possible. If there are no LRU pages or the only > LRU pages are transhuge then the LRU lock will not be acquired at all > which reduces contention on zone->lru_lock. > > Signed-off-by: Mel Gorman > Acked-by: Rik van Riel > --- Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 2/9] Revert "mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix"

On Fri, Sep 21, 2012 at 11:46:16AM +0100, Mel Gorman wrote: > This reverts > mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix > as it is replaced by a later patch in the series. > > Signed-off-by: Mel Gorman Acked-by: Rafael Aquini

Re: [Qemu-devel] [PATCH 1/9] Revert "mm: compaction: check lock contention first before taking lock"

On Fri, Sep 21, 2012 at 11:46:15AM +0100, Mel Gorman wrote: > This reverts > mm-compaction-check-lock-contention-first-before-taking-lock.patch as it > is replaced by a later patch in the series. > > Signed-off-by: Mel Gorman Acked-by: Rafael Aquini