Huang Ying 61b639723b mm, swap: use page-cluster as max window of VMA based swap readahead ... When the VMA based swap readahead was introduced, a new knob /sys/kernel/mm/swap/vma_ra_max_order was added as the max window of VMA swap readahead. This is to make it possible to use different max window for VMA based readahead and original physical readahead. But Minchan Kim pointed out that this will cause a regression because setting page-cluster sysctl to zero cannot disable swap readahead with the change. To fix the regression, the page-cluster sysctl is used as the max window of both the VMA based swap readahead and original physical swap readahead. If more fine grained control is needed in the future, more knobs can be added as the subordinate knobs of the page-cluster sysctl. The vma_ra_max_order knob is deleted. Because the knob was introduced in v4.14-rc1, and this patch is targeting being merged before v4.14 releasing, there should be no existing users of this newly added ABI. Link: http://lkml.kernel.org/r/20171011070847.16003-1-ying.huang@intel.com Fixes: ec560175c0 ("mm, swap: VMA based swap readahead") Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reported-by: Minchan Kim <minchan@kernel.org> Acked-by: Minchan Kim <minchan@kernel.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Rik van Riel <riel@redhat.com> Cc: Shaohua Li <shli@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Tim Chen <tim.c.chen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-10-13 16:18:33 -07:00
..
kasan	Merge branch 'linus' into locking/core, to pick up fixes	2017-08-10 12:20:53 +02:00
backing-dev.c	mm/backing-dev.c: fix an error handling path in 'cgwb_create()'	2017-09-11 14:16:44 -06:00
balloon_compaction.c	mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY	2017-09-08 18:26:46 -07:00
bootmem.c	mm/bootmem.c: cosmetic improvement of code readability	2017-02-22 16:41:29 -08:00
cleancache.c	fs: switch ->s_uuid to uuid_t	2017-06-05 16:59:12 +02:00
cma_debug.c	mm/cma_debug.c: fix stack corruption due to sprintf usage	2017-08-18 15:32:02 -07:00
cma.c	mm/cma.c: take __GFP_NOWARN into account in cma_alloc()	2017-10-13 16:18:32 -07:00
cma.h	cma: Store a name in the cma structure	2017-04-18 20:41:12 +02:00
compaction.c	mm,compaction: serialize waitqueue_active() checks (for real)	2017-10-03 17:54:24 -07:00
debug_page_ref.c	mm/page_ref: add tracepoint to track down page reference manipulation	2016-03-17 15:09:34 -07:00
debug.c	mm: make tlb_flush_pending global	2017-08-10 15:54:07 -07:00
dmapool.c	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
early_ioremap.c	x86/mm: Add support to access boot related data in the clear	2017-07-18 11:38:02 +02:00
fadvise.c	mm: fadvise: avoid fadvise for fs without backing device	2017-09-08 18:26:47 -07:00
failslab.c	mm: fault-inject take over bootstrap kmem_cache check	2016-03-15 16:55:16 -07:00
filemap.c	mm: have filemap_check_and_advance_wb_err clear AS_EIO/AS_ENOSPC	2017-10-03 17:54:24 -07:00
frame_vector.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
frontswap.c	mm, frontswap: convert frontswap_enabled to static key	2016-07-26 16:19:19 -07:00
gup.c	mm/device-public-memory: device memory cache coherent with CPU	2017-09-08 18:26:46 -07:00
highmem.c	mm/highmem: make nr_free_highpages() handles all highmem zones by itself	2016-05-19 19:12:14 -07:00
hmm.c	mm/hmm: avoid bloating arch that do not make use of HMM	2017-09-08 18:26:46 -07:00
huge_memory.c	mm: soft-dirty: keep soft-dirty bits over thp migration	2017-09-08 18:26:45 -07:00
hugetlb_cgroup.c	mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size	2016-05-20 17:58:30 -07:00
hugetlb.c	powerpc updates for 4.14	2017-09-07 10:15:40 -07:00
hwpoison-inject.c	mm: hwpoison: call shake_page() unconditionally	2017-05-03 15:52:12 -07:00
init-mm.c	mm: Add a user_ns owner to mm_struct and fix ptrace permission checks	2016-11-22 11:49:48 -06:00
internal.h	mm, oom: do not rely on TIF_MEMDIE for memory reserves access	2017-09-06 17:27:30 -07:00
interval_tree.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
Kconfig	mm/hmm: avoid bloating arch that do not make use of HMM	2017-09-08 18:26:46 -07:00
Kconfig.debug	mm: enable page poisoning early at boot	2017-05-03 15:52:10 -07:00
khugepaged.c	mm: make PR_SET_THP_DISABLE immediately active	2017-07-10 16:32:31 -07:00
kmemcheck.c	mm: Rename SLAB_DESTROY_BY_RCU to SLAB_TYPESAFE_BY_RCU	2017-04-18 11:42:36 -07:00
kmemleak-test.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
kmemleak.c	mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects	2017-07-06 16:24:34 -07:00
ksm.c	ksm: fix unlocked iteration over vmas in cmp_and_merge_page()	2017-10-03 17:54:23 -07:00
list_lru.c	mm: memcontrol: use vmalloc fallback for large kmem memcg arrays	2017-10-03 17:54:25 -07:00
maccess.c	x86: remove more uaccess_32.h complexity	2016-05-22 17:21:27 -07:00
madvise.c	mm/madvise.c: add description for MADV_WIPEONFORK and MADV_KEEPONFORK	2017-10-13 16:18:32 -07:00
Makefile	mm/hmm: avoid bloating arch that do not make use of HMM	2017-09-08 18:26:46 -07:00
memblock.c	mm/memblock.c: reversed logic in memblock_discard()	2017-08-25 16:12:46 -07:00
memcontrol.c	mm/memcg: avoid page count check for zone device	2017-10-03 17:54:24 -07:00
memory_hotplug.c	mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long	2017-10-03 17:54:26 -07:00
memory-failure.c	x86/mm, mm/hwpoison: Clear PRESENT bit for kernel 1:1 mappings of poison pages	2017-08-17 10:30:49 +02:00
memory.c	mm/device-public-memory: fix edge case in _vm_normal_page()	2017-10-03 17:54:25 -07:00
mempolicy.c	mm/mempolicy: fix NUMA_INTERLEAVE_HIT counter	2017-10-13 16:18:32 -07:00
mempool.c	sched/wait: Rename wait_queue_t => wait_queue_entry_t	2017-06-20 12:18:27 +02:00
memtest.c
migrate.c	mm/migrate: fix indexing bug (off by one) and avoid out of bound access	2017-10-13 16:18:32 -07:00
mincore.c	mm: remove shmem_mapping() shmem_zero_setup() duplicates	2017-02-24 17:46:56 -08:00
mlock.c	mm/mlock.c: use page_zone() instead of page_zone_id()	2017-09-08 18:26:47 -07:00
mm_init.c	mm: convert printk(KERN_<LEVEL> to pr_<level>	2016-03-17 15:09:34 -07:00
mmap.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
mmu_context.c	sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
mmu_notifier.c	mm/mmu_notifier: kill invalidate_page	2017-08-31 16:13:00 -07:00
mmzone.c	mm/mmzone.c: swap likely to unlikely as code logic is different for next_zones_zonelist()	2017-02-22 16:41:29 -08:00
mprotect.c	mm/ZONE_DEVICE: new type of ZONE_DEVICE for unaddressable memory	2017-09-08 18:26:46 -07:00
mremap.c	mm: thp: check pmd migration entry in common path	2017-09-08 18:26:45 -07:00
msync.c
nobootmem.c	mm: discard memblock data later	2017-08-18 15:32:01 -07:00
nommu.c	Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-09-14 18:13:32 -07:00
oom_kill.c	mm, oom_reaper: skip mm structs with mmu notifiers	2017-10-03 17:54:24 -07:00
page_alloc.c	mm, page_alloc: add scheduling point to memmap_init_zone	2017-10-03 17:54:25 -07:00
page_counter.c
page_ext.c	mm, page_ext: periodically reschedule during page_ext_init()	2017-09-06 17:27:26 -07:00
page_idle.c	mm/page_idle.c: constify attribute_group structures	2017-09-06 17:27:27 -07:00
page_io.c	Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block	2017-09-07 11:59:42 -07:00
page_isolation.c	mm: unify new_node_page and alloc_migrate_target	2017-07-10 16:32:31 -07:00
page_owner.c	mm, page_owner: skip unnecessary stack_trace entries	2017-09-13 18:53:16 -07:00
page_poison.c	mm: enable page poisoning early at boot	2017-05-03 15:52:10 -07:00
page_vma_mapped.c	mm: page_vma_mapped: ensure pmd is loaded with READ_ONCE outside of lock	2017-10-13 16:18:33 -07:00
page-writeback.c	mm: rename global_page_state to global_zone_page_state	2017-09-06 17:27:29 -07:00
pagewalk.c	mm/hugetlb: add size parameter to huge_pte_offset()	2017-07-06 16:24:34 -07:00
percpu-internal.h	percpu: skip chunks if the alloc does not fit in the contig hint	2017-07-26 17:41:05 -04:00
percpu-km.c	percpu: replace area map allocator with bitmap	2017-07-26 17:41:05 -04:00
percpu-stats.c	percpu: fix starting offset for chunk statistics traversal	2017-09-27 14:45:57 -07:00
percpu-vm.c	percpu: fix static checker warnings in pcpu_destroy_chunk	2017-06-29 11:23:38 -04:00
percpu.c	percpu: fix iteration to prevent skipping over block	2017-09-28 07:39:27 -07:00
pgtable-generic.c	mm: thp: enable thp migration in generic path	2017-09-08 18:26:45 -07:00
process_vm_access.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h>	2017-03-02 08:42:28 +01:00
quicklist.c	fix Christoph's email addresses	2016-03-17 15:09:34 -07:00
readahead.c	mm: don't cap request size based on read-ahead setting	2016-12-12 18:55:08 -08:00
rmap.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
rodata_test.c	mm: fix RODATA_TEST failure "rodata_test: test data was not read only"	2017-10-03 17:54:24 -07:00
shmem.c	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
slab_common.c	mm: memcontrol: use vmalloc fallback for large kmem memcg arrays	2017-10-03 17:54:25 -07:00
slab.c	mm: memcontrol: account slab stats per lruvec	2017-07-06 16:24:35 -07:00
slab.h	locking/lockdep: Rework FS_RECLAIM annotation	2017-08-10 12:29:03 +02:00
slob.c	locking/lockdep: Rework FS_RECLAIM annotation	2017-08-10 12:29:03 +02:00
slub.c	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
sparse-vmemmap.c	mm, sparse, page_ext: drop ugly N_HIGH_MEMORY branches for allocations	2017-09-06 17:27:26 -07:00
sparse.c	mm/sparse.c: fix typo in online_mem_sections	2017-09-08 18:26:47 -07:00
swap_cgroup.c	mm, THP, swap: delay splitting THP during swap out	2017-07-06 16:24:31 -07:00
swap_slots.c	mm/swap_slots.c: don't disable preemption while taking the per-CPU cache	2017-07-10 16:32:32 -07:00
swap_state.c	mm, swap: use page-cluster as max window of VMA based swap readahead	2017-10-13 16:18:33 -07:00
swap.c	mm: avoid marking swap cached page as lazyfree	2017-10-03 17:54:24 -07:00
swapfile.c	mm/swapfile.c: fix swapon frontswap_map memory leak on error	2017-09-08 18:26:47 -07:00
truncate.c	mm/truncate.c: fix THP handling in invalidate_mapping_pages()	2017-07-10 16:32:32 -07:00
usercopy.c	mm/usercopy: Drop extra is_vmalloc_or_module() check	2017-04-05 12:30:18 -07:00
userfaultfd.c	userfaultfd: shmem: wire up shmem_mfill_zeropage_pte	2017-09-06 17:27:28 -07:00
util.c	mm: rename global_page_state to global_zone_page_state	2017-09-06 17:27:29 -07:00
vmacache.c	sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
vmalloc.c	Revert "vmalloc: back off when the current task is killed"	2017-10-13 16:18:32 -07:00
vmpressure.c	mm, vmpressure: pass-through notification support	2017-07-10 16:32:31 -07:00
vmscan.c	mm, THP, swap: add THP swapping out fallback counting	2017-09-06 17:27:28 -07:00
vmstat.c	mm: consider the number in local CPUs when reading NUMA stats	2017-09-08 18:26:47 -07:00
workingset.c	mm: memcontrol: per-lruvec stats infrastructure	2017-07-06 16:24:35 -07:00
z3fold.c	z3fold: fix stale list handling	2017-10-03 17:54:24 -07:00
zbud.c
zpool.c
zsmalloc.c	mm/zsmalloc.c: change stat type parameter to int	2017-09-08 18:26:47 -07:00
zswap.c	mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare()	2017-07-06 16:24:35 -07:00