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remarkable-linux/mm
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Mel Gorman 4d40502ea5 mm: kswapd: reset kswapd_max_order and classzone_idx after reading 
When kswapd wakes up, it reads its order and classzone from pgdat and
calls balance_pgdat.  While its awake, it potentially reclaimes at a high
order and a low classzone index.  This might have been a once-off that was
not required by subsequent callers.  However, because the pgdat values
were not reset, they remain artifically high while balance_pgdat() is
running and potentially kswapd enters a second unnecessary reclaim cycle.
Reset the pgdat order and classzone index after reading.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Eric B Munson <emunson@mgebm.net>
Cc: Simon Kirby <sim@hostway.ca>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 17:32:37 -08:00
..
backing-dev.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2010-10-26 17:58:44 -07:00
bootmem.c
bounce.c
compaction.c mm: compaction: perform a faster migration scan when migrating asynchronously 2011-01-13 17:32:34 -08:00
debug-pagealloc.c
dmapool.c mm: add a might_sleep_if() to dma_pool_alloc() 2010-10-26 16:52:08 -07:00
fadvise.c
failslab.c
filemap.c mm: remove likely() from grab_cache_page_write_begin() 2011-01-13 17:32:36 -08:00
filemap_xip.c
fremap.c
highmem.c mm,x86: fix kmap_atomic_push vs ioremap_32.c 2010-10-27 18:03:05 -07:00
hugetlb.c mm/hugetlb.c: avoid double unlock_page() in hugetlb_fault() 2010-12-02 14:51:14 -08:00
hwpoison-inject.c
init-mm.c
internal.h mlock: do not hold mmap_sem for extended periods of time 2011-01-13 17:32:36 -08:00
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c ksm: annotate ksm_thread_mutex is no deadlock source 2010-12-02 14:51:15 -08:00
maccess.c MN10300: Save frame pointer in thread_info struct rather than global var 2010-10-27 17:29:01 +01:00
madvise.c
Makefile
memblock.c
memcontrol.c memcg: fix wrong VM_BUG_ON() in try_charge()'s mm->owner check 2010-12-30 10:07:06 -08:00
memory-failure.c mm: migration: allow migration to operate asynchronously and avoid synchronous compaction in the faster path 2011-01-13 17:32:34 -08:00
memory.c mlock: do not hold mmap_sem for extended periods of time 2011-01-13 17:32:36 -08:00
memory_hotplug.c mm: migration: cleanup migrate_pages API by matching types for offlining and sync 2011-01-13 17:32:34 -08:00
mempolicy.c mempolicy: remove tasklist_lock from migrate_pages 2011-01-13 17:32:36 -08:00
mempool.c
migrate.c mm: migration: cleanup migrate_pages API by matching types for offlining and sync 2011-01-13 17:32:34 -08:00
mincore.c
mlock.c mlock: do not hold mmap_sem for extended periods of time 2011-01-13 17:32:36 -08:00
mm_init.c
mmap.c install_special_mapping skips security_file_mmap check. 2010-12-15 12:30:36 -08:00
mmu_context.c
mmu_notifier.c
mmzone.c mm: page allocator: adjust the per-cpu counter threshold when memory is low 2011-01-13 17:32:31 -08:00
mprotect.c perf_events: Fix perf_counter_mmap() hook in mprotect() 2010-11-09 10:19:38 -08:00
mremap.c mm: remove pte_*map_nested() 2010-10-26 16:52:08 -07:00
msync.c
nommu.c mlock: do not hold mmap_sem for extended periods of time 2011-01-13 17:32:36 -08:00
oom_kill.c oom: kill all threads sharing oom killed task's mm 2010-10-26 16:52:05 -07:00
page-writeback.c mm/page-writeback.c: fix __set_page_dirty_no_writeback() return value 2011-01-13 17:32:32 -08:00
page_alloc.c mm: kswapd: stop high-order balancing when any suitable zone is balanced 2011-01-13 17:32:37 -08:00
page_cgroup.c
page_io.c
page_isolation.c mm: page_isolation: codeclean fix comment and rm unneeded val init 2010-10-26 16:52:11 -07:00
pagewalk.c mm: remove call to find_vma in pagewalk for non-hugetlbfs 2010-11-25 06:50:46 +09:00
percpu-km.c
percpu-vm.c mm: remove gfp mask from pcpu_get_vm_areas 2011-01-13 17:32:34 -08:00
percpu.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-01-13 10:05:56 -08:00
prio_tree.c
quicklist.c
readahead.c
rmap.c mm/rmap.c: fix comment 2010-12-27 15:14:06 +01:00
shmem.c fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
slab.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 2011-01-10 08:38:01 -08:00
slob.c kernel: kmem_ptr_validate considered harmful 2011-01-07 17:50:16 +11:00
slub.c mm: convert sprintf_symbol to %pS 2011-01-13 17:32:33 -08:00
sparse-vmemmap.c tree-wide: fix comment/printk typos 2010-11-01 15:38:34 -04:00
sparse.c
swap.c fuse: use release_pages() 2010-10-27 18:03:17 -07:00
swap_state.c
swapfile.c block: make blkdev_get/put() handle exclusive access 2010-11-13 11:55:17 +01:00
thrash.c
truncate.c Call the filesystem back whenever a page is removed from the page cache 2010-12-02 09:55:21 -05:00
util.c kernel: kmem_ptr_validate considered harmful 2011-01-07 17:50:16 +11:00
vmalloc.c vmalloc: remove redundant unlikely() 2011-01-13 17:32:36 -08:00
vmscan.c mm: kswapd: reset kswapd_max_order and classzone_idx after reading 2011-01-13 17:32:37 -08:00
vmstat.c mm: vmstat: use a single setter function and callback for adjusting percpu thresholds 2011-01-13 17:32:31 -08:00