Raghavendra K T 6d2be915e5 mm/readahead.c: fix readahead failure for memoryless NUMA nodes and limit readahead pages ... Currently max_sane_readahead() returns zero on the cpu whose NUMA node has no local memory which leads to readahead failure. Fix this readahead failure by returning minimum of (requested pages, 512). Users running applications on a memory-less cpu which needs readahead such as streaming application see considerable boost in the performance. Result: fadvise experiment with FADV_WILLNEED on a PPC machine having memoryless CPU with 1GB testfile (12 iterations) yielded around 46.66% improvement. fadvise experiment with FADV_WILLNEED on a x240 machine with 1GB testfile 32GB* 4G RAM numa machine (12 iterations) showed no impact on the normal NUMA cases w/ patch. Kernel Avg Stddev base 7.4975 3.92% patched 7.4174 3.26% [Andrew: making return value PAGE_SIZE independent] Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Acked-by: Jan Kara <jack@suse.cz> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-04-03 16:21:05 -07:00
..
backing-dev.c	bdi: avoid oops on device removal	2014-04-03 16:20:49 -07:00
balloon_compaction.c	mm: print more details for bad_page()	2014-01-23 16:36:50 -08:00
bootmem.c	mm/bootmem.c: remove unused local `map'	2013-11-13 12:09:09 +09:00
bounce.c	block: Convert bio_for_each_segment() to bvec_iter	2013-11-23 22:33:49 -08:00
cleancache.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
compaction.c	mm/compaction.c: mark function as static	2014-04-03 16:21:02 -07:00
debug-pagealloc.c
dmapool.c	dmapool: make DMAPOOL_DEBUG detect corruption of free marker	2012-12-11 17:22:24 -08:00
fadvise.c	teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long	2013-03-03 22:46:22 -05:00
failslab.c
filemap_xip.c	seqcount: Add lockdep functionality to seqcount/seqlock structures	2013-11-06 12:40:26 +01:00
filemap.c	mm: remove read_cache_page_async()	2014-04-03 16:21:04 -07:00
fremap.c	mm: fix bad rss-counter if remap_file_pages raced migration	2014-03-19 16:21:49 -07:00
frontswap.c	frontswap: fix incorrect zeroing and allocation size for frontswap_map	2013-06-12 16:29:46 -07:00
highmem.c	Some nice cleanups, and even a patch my wife did as a "live" demo for	2012-12-20 08:37:05 -08:00
huge_memory.c	mm, thp: drop do_huge_pmd_wp_zero_page_fallback()	2014-04-03 16:21:04 -07:00
hugetlb_cgroup.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
hugetlb.c	mm, hugetlb: mark some bootstrap functions as __init	2014-04-03 16:21:01 -07:00
hwpoison-inject.c	mm/hwpoison: add '#' to hwpoison_inject	2014-01-21 16:19:48 -08:00
init-mm.c
internal.h	mm/page-writeback.c: do not count anon pages as dirtyable memory	2014-01-29 16:22:39 -08:00
interval_tree.c	mm: add CONFIG_DEBUG_VM_RB build option	2012-10-09 16:22:42 +09:00
Kconfig	mm/Kconfig: fix URL for zsmalloc benchmark	2014-03-10 17:26:20 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	kmemleak: change some global variables to int	2014-04-03 16:20:50 -07:00
ksm.c	mm: close PageTail race	2014-03-04 07:55:47 -08:00
list_lru.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
maccess.c
madvise.c	mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood	2013-09-30 14:31:02 -07:00
Makefile	mm: thrash detection-based file cache sizing	2014-04-03 16:21:01 -07:00
memblock.c	memblock: add limit checking to memblock_virt_alloc	2014-01-29 16:22:40 -08:00
memcontrol.c	memcg: reparent charges of children before processing parent	2014-03-04 07:55:48 -08:00
memory_hotplug.c	mm/memory_hotplug.c: move register_memory_resource out of the lock_memory_hotplug	2014-01-23 16:36:52 -08:00
memory-failure.c	mm: close PageTail race	2014-03-04 07:55:47 -08:00
memory.c	mm: consolidate code to setup pte	2014-04-03 16:21:04 -07:00
mempolicy.c	mm: optimize put_mems_allowed() usage	2014-04-03 16:20:58 -07:00
mempool.c	mm/mempool.c: convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)	2013-09-11 15:58:14 -07:00
migrate.c	mm: fix swapops.h:131 bug if remap_file_pages raced migration	2014-03-20 22:09:09 -07:00
mincore.c	mm + fs: prepare for non-page entries in page cache radix trees	2014-04-03 16:21:00 -07:00
mlock.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
mm_init.c	mm: bring back /sys/kernel/mm	2014-01-27 21:02:39 -08:00
mmap.c	mm/mmap.c: mark function as static	2014-04-03 16:21:02 -07:00
mmu_context.c	sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm	2014-02-21 08:50:17 +01:00
mmu_notifier.c	mm: audit/fix non-modular users of module_init in core code	2014-01-23 16:36:52 -08:00
mmzone.c	mm: numa: Change page last {nid,pid} into {cpu,pid}	2013-10-09 14:47:45 +02:00
mprotect.c	mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit	2014-02-17 11:19:36 +11:00
mremap.c	mm: revert mremap pud_free anti-fix	2013-10-16 21:35:53 -07:00
msync.c
nobootmem.c	mm/nobootmem.c: mark function as static	2014-04-03 16:21:02 -07:00
nommu.c	mm: add overcommit_kbytes sysctl variable	2014-01-21 16:19:44 -08:00
oom_kill.c	mm, oom: base root bonus on current usage	2014-01-30 16:56:56 -08:00
page_alloc.c	mm: optimize put_mems_allowed() usage	2014-04-03 16:20:58 -07:00
page_cgroup.c	mm/page_cgroup.c: mark functions as static	2014-04-03 16:21:02 -07:00
page_io.c	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
page_isolation.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
page-writeback.c	mm: __set_page_dirty_nobuffers() uses spin_lock_irqsave() instead of spin_lock_irq()	2014-02-06 13:48:51 -08:00
pagewalk.c	mm/pagewalk.c: fix walk_page_range() access of wrong PTEs	2013-10-30 14:27:03 -07:00
percpu-km.c
percpu-vm.c	mm: fix kernel-doc warnings	2012-06-20 14:39:36 -07:00
percpu.c	percpu: renew the max_contig if we merge the head and previous block	2014-03-29 09:29:42 -04:00
pgtable-generic.c	mm: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
process_vm_access.c	mm/process_vm_access.c: mark function as static	2014-04-03 16:21:02 -07:00
quicklist.c
readahead.c	mm/readahead.c: fix readahead failure for memoryless NUMA nodes and limit readahead pages	2014-04-03 16:21:05 -07:00
rmap.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2014-03-31 14:35:30 -07:00
shmem.c	mm + fs: prepare for non-page entries in page cache radix trees	2014-04-03 16:21:00 -07:00
slab_common.c	slab: fix wrong retval on kmem_cache_create_memcg error path	2014-01-29 16:22:40 -08:00
slab.c	mm: optimize put_mems_allowed() usage	2014-04-03 16:20:58 -07:00
slab.h	memcg, slab: RCU protect memcg_params for root caches	2014-01-23 16:36:51 -08:00
slob.c	mm/sl[aou]b: Move kmallocXXX functions to common code	2013-09-04 20:51:33 +03:00
slub.c	slub: do not drop slab_mutex for sysfs_slab_add	2014-04-03 16:21:05 -07:00
sparse-vmemmap.c	mm/sparse: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
sparse.c	sparse: fix comment	2014-04-02 09:16:17 +02:00
swap_state.c	swap: add a simple detector for inappropriate swapin readahead	2014-02-06 13:48:51 -08:00
swap.c	mm: thrash detection-based file cache sizing	2014-04-03 16:21:01 -07:00
swapfile.c	mm/swap: fix race on swap_info reuse between swapoff and swapon	2014-02-06 13:48:51 -08:00
truncate.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
util.c	mm: add overcommit_kbytes sysctl variable	2014-01-21 16:19:44 -08:00
vmalloc.c	Revert "mm/vmalloc: interchage the implementation of vmalloc_to_{pfn,page}"	2014-01-27 21:02:39 -08:00
vmpressure.c	arm, pm, vmpressure: add missing slab.h includes	2014-02-03 13:24:01 -05:00
vmscan.c	mm: thrash detection-based file cache sizing	2014-04-03 16:21:01 -07:00
vmstat.c	drop_caches: add some documentation and info message	2014-04-03 16:21:04 -07:00
workingset.c	mm: keep page cache radix tree nodes in check	2014-04-03 16:21:01 -07:00
zbud.c	mm/zbud: fix some trivial typos in comments	2013-09-11 15:57:35 -07:00
zsmalloc.c	zsmalloc: add copyright	2014-01-30 16:56:55 -08:00
zswap.c	mm/zswap.c: change params from hidden to ro	2014-01-23 16:36:50 -08:00