Rik van Riel 7be62de99a vmscan: kswapd carefully call compaction ... With CONFIG_COMPACTION enabled, kswapd does not try to free contiguous free pages, even when it is woken for a higher order request. This could be bad for eg. jumbo frame network allocations, which are done from interrupt context and cannot compact memory themselves. Higher than before allocation failure rates in the network receive path have been observed in kernels with compaction enabled. Teach kswapd to defragment the memory zones in a node, but only if required and compaction is not deferred in a zone. [akpm@linux-foundation.org: reduce scope of zones_need_compaction] Signed-off-by: Rik van Riel <riel@redhat.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Hillf Danton <dhillf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-03-21 17:54:56 -07:00
..
backing-dev.c	backing-dev: fix wakeup timer races with bdi_unregister()	2012-02-01 16:52:49 +08:00
bootmem.c	mm: bootmem: try harder to free pages in bulk	2012-01-10 16:30:45 -08:00
bounce.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
cleancache.c	mm: cleancache core ops functions and config	2011-05-26 10:01:36 -06:00
compaction.c	vmscan: kswapd carefully call compaction	2012-03-21 17:54:56 -07:00
debug-pagealloc.c	mm, x86: Remove debug_pagealloc_enabled	2011-12-06 09:24:07 +01:00
dmapool.c	mm: fix implicit stat.h usage in dmapool.c	2011-10-31 09:20:12 -04:00
fadvise.c	fadvise: only initiate writeback for specified range with FADV_DONTNEED	2012-01-10 16:30:43 -08:00
failslab.c	switch debugfs to umode_t	2012-01-03 22:54:56 -05:00
filemap.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
filemap_xip.c	mm/filemap_xip.c: fix race condition in xip_file_fault()	2012-02-03 16:16:41 -08:00
fremap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
highmem.c	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
huge_memory.c	mm: thp: fix BUG on mm->nr_ptes	2012-03-05 15:49:43 -08:00
hugetlb.c	flush_tlb_range() needs ->page_table_lock when ->mmap_sem is not held	2012-03-05 13:51:32 -08:00
hwpoison-inject.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
init-mm.c	atomic: use <linux/atomic.h>	2011-07-26 16:49:47 -07:00
internal.h	mm: thp: tail page refcounting fix	2011-11-02 16:06:57 -07:00
Kconfig	Merge branch 'master' into x86/memblock	2011-11-28 09:46:22 -08:00
Kconfig.debug	mm: more intensive memory corruption debugging	2012-01-10 16:30:42 -08:00
kmemcheck.c	kmemcheck: Fix build errors due to missing slab.h	2010-03-30 22:02:32 +09:00
kmemleak-test.c	kmemleak: remove memset by using kzalloc	2011-01-27 18:31:51 +00:00
kmemleak.c	kmemleak: Disable early logging when kmemleak is off by default	2012-01-20 16:57:05 +00:00
ksm.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
maccess.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
madvise.c	fs: kill i_alloc_sem	2011-07-20 20:47:46 -04:00
Makefile	Cross Memory Attach	2011-10-31 17:30:44 -07:00
memblock.c	memblock: Fix size aligning of memblock_alloc_base_nid()	2012-03-01 10:53:18 +01:00
memcontrol.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
memory-failure.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
memory.c	mm: make get_mm_counter static-inline	2012-03-21 17:54:55 -07:00
memory_hotplug.c	mm: compaction: introduce sync-light migration for use by compaction	2012-01-12 20:13:09 -08:00
mempolicy.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mempool.c	mempool: fix first round failure behavior	2012-01-10 16:30:45 -08:00
migrate.c	memcg: fix GPF when cgroup removal races with last exit	2012-03-05 15:49:43 -08:00
mincore.c	mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
mlock.c	vm: avoid using find_vma_prev() unnecessarily	2012-03-06 18:23:36 -08:00
mm_init.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmap.c	mm: fix find_vma_prev	2012-03-06 16:48:03 -08:00
mmu_context.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmu_notifier.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
mmzone.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
mprotect.c	vm: avoid using find_vma_prev() unnecessarily	2012-03-06 18:23:36 -08:00
mremap.c	mremap: enforce rmap src/dst vma ordering in case of vma_merge() succeeding in copy_vma()	2012-01-10 16:30:44 -08:00
msync.c	sanitize vfs_fsync calling conventions	2010-05-21 18:31:21 -04:00
nobootmem.c	Merge branch 'master' into x86/memblock	2011-11-28 09:46:22 -08:00
nommu.c	NOMMU: Don't need to clear vm_mm when deleting a VMA	2012-02-24 08:59:04 -08:00
oom_kill.c	mm, oom: introduce independent oom killer ratelimit state	2012-03-21 17:54:55 -07:00
page-writeback.c	Merge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux	2012-01-10 16:59:59 -08:00
page_alloc.c	vfs: fix panic in __d_lookup() with high dentry hashtable counts	2012-02-13 20:45:38 -05:00
page_cgroup.c	page_cgroup: fix horrid swap accounting regression	2012-03-06 08:18:23 -08:00
page_io.c	block: kill off REQ_UNPLUG	2011-03-10 08:52:27 +01:00
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: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode	2012-03-21 17:54:54 -07:00
percpu-km.c	percpu: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
percpu-vm.c	percpu: use bitmap_clear	2012-01-20 09:23:16 -08:00
percpu.c	Kmemleak patches	2012-01-14 18:11:11 -08:00
pgtable-generic.c	mm/pgtable-generic.c: fix CONFIG_SWAP=n build	2011-01-26 10:49:58 +10:00
prio_tree.c	sanitize <linux/prefetch.h> usage	2011-05-20 12:50:29 -07:00
process_vm_access.c	Fix race in process_vm_rw_core	2012-02-02 12:55:17 -08:00
quicklist.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
readahead.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
rmap.c	mm: unify remaining mem_cont, mem, etc. variable names to memcg	2012-01-12 20:13:06 -08:00
shmem.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
slab.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2012-01-11 18:52:23 -08:00
slob.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
slub.c	mm,x86,um: move CMPXCHG_DOUBLE config option	2012-01-12 20:13:03 -08:00
sparse-vmemmap.c	mm: delete various needless include <linux/module.h>	2011-10-31 09:20:11 -04:00
sparse.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
swap.c	memcg: fix GPF when cgroup removal races with last exit	2012-03-05 15:49:43 -08:00
swap_state.c	mm: make swapin readahead skip over holes	2012-03-21 17:54:56 -07:00
swapfile.c	mm: make swapin readahead skip over holes	2012-03-21 17:54:56 -07:00
thrash.c	mm/thrash.c: quiet sparse noise	2011-10-31 17:30:50 -07:00
truncate.c	mm: fix comment typo of truncate_inode_pages_range	2012-02-23 11:52:19 +01:00
util.c	mm: Map most files to use export.h instead of module.h	2011-10-31 09:20:12 -04:00
vmalloc.c	mm: remove the second argument of k[un]map_atomic()	2012-03-20 21:48:27 +08:00
vmscan.c	vmscan: kswapd carefully call compaction	2012-03-21 17:54:56 -07:00
vmstat.c	mm,x86,um: move CMPXCHG_LOCAL config option	2012-01-12 20:13:03 -08:00