Minchan Kim a1fbfa1855 zsmalloc: introduce zspage structure ... We have squeezed meta data of zspage into first page's descriptor. So, to get meta data from subpage, we should get first page first of all. But it makes trouble to implment page migration feature of zsmalloc because any place where to get first page from subpage can be raced with first page migration. IOW, first page it got could be stale. For preventing it, I have tried several approahces but it made code complicated so finally, I concluded to separate metadata from first page. Of course, it consumes more memory. IOW, 16bytes per zspage on 32bit at the moment. It means we lost 1% at *worst case*(40B/4096B) which is not bad I think at the cost of maintenance. Link: http://lkml.kernel.org/r/1464736881-24886-9-git-send-email-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Git-commit: 3783689a1aa82ef27a6418b043dd7a077b8330c5 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Change-Id: I2f0c67d7b85ebfe0655b92e13854fdbde5f26f2b Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>		2017-02-21 12:40:57 +05:30
..
kasan	UBSAN: run-time undefined behavior sanity checker	2016-03-22 11:09:57 -07:00
backing-dev.c	block: fix bdi vs gendisk lifetime mismatch	2016-08-20 18:09:24 +02:00
balloon_compaction.c	mm: balloon: use general non-lru movable page feature	2017-02-21 12:38:41 +05:30
bootmem.c	mm: Remove __init annotations from free_bootmem_late	2016-03-22 11:03:23 -07:00
cleancache.c	cleancache: remove limit on the number of cleancache enabled filesystems	2015-04-14 16:49:03 -07:00
cma.c	mm: cma: check the max limit for cma allocation	2016-11-16 05:53:10 -08:00
cma.h	mm: cma: mark cma_bitmap_maxno() inline in header	2015-08-14 15:56:32 -07:00
cma_debug.c	mm/cma_debug: correct size input to bitmap function	2015-07-17 16:39:54 -07:00
compaction.c	zsmalloc: introduce zspage structure	2017-02-21 12:40:57 +05:30
debug-pagealloc.c	debug-pagealloc: Panic on pagealloc corruption	2016-10-28 10:55:48 +05:30
debug.c	mm: add WasActive page flag	2016-05-31 15:27:11 -07:00
dmapool.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
early_ioremap.c	mm/early_ioremap: use offset_in_page macro	2015-11-05 19:34:48 -08:00
fadvise.c	writeback: implement and use inode_congested()	2015-06-02 08:33:35 -06:00
failslab.c	mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM	2015-11-06 17:50:42 -08:00
filemap.c	mm: vmstat: add pageoutclean	2016-03-25 16:03:59 -07:00
frame_vector.c	mm: fix docbook comment for get_vaddr_frames()	2015-11-05 19:34:48 -08:00
frontswap.c	frontswap: allow multiple backends	2015-06-24 17:49:45 -07:00
gup.c	mm: remove gup_flags FOLL_WRITE games from __get_user_pages()	2016-12-09 17:43:44 -08:00
highmem.c	mm/highmem: make kmap cache coloring aware	2014-08-06 18:01:22 -07:00
huge_memory.c	Revert "Merge remote-tracking branch 'msm-4.4/tmp-510d0a3f' into msm-4.4"	2016-08-26 14:34:05 -07:00
hugetlb.c	hugetlb: fix nr_pmds accounting with shared page tables	2016-09-07 08:32:35 +02:00
hugetlb_cgroup.c	mm: make compound_head() robust	2015-11-06 17:50:42 -08:00
hwpoison-inject.c	hwpoison: use page_cgroup_ino for filtering by memcg	2015-09-10 13:29:01 -07:00
init-mm.c
internal.h	mm, kswapd: replace kswapd compaction with waking up kcompactd	2017-02-21 12:37:21 +05:30
interval_tree.c	mm: replace vma->sharead.linear with vma->shared	2015-02-10 14:30:31 -08:00
Kconfig	mm: Support address range reclaim	2016-06-22 14:44:20 -07:00
Kconfig.debug	mm/debug_pagealloc: ask users for default setting of debug_pagealloc	2016-04-29 14:40:10 -07:00
kmemcheck.c	mm/slab_common: move kmem_cache definition to internal header	2014-10-09 22:25:50 -04:00
kmemleak-test.c	mm/kmemleak-test.c: use pr_fmt for logging	2014-06-06 16:08:18 -07:00
kmemleak.c	kmemleak : Make kmemleak_stack_scan optional using config	2016-03-22 11:03:47 -07:00
ksm.c	mm: migrate: support non-lru movable page migration	2017-02-21 12:38:28 +05:30
list_lru.c	memcg: simplify and inline __mem_cgroup_from_kmem	2015-11-05 19:34:48 -08:00
maccess.c	x86: remove more uaccess_32.h complexity	2016-08-27 11:23:38 +08:00
madvise.c	mm: add a field to store names for private anonymous memory	2016-02-16 13:54:13 -08:00
Makefile	Merge branch 'v4.4-16.09-android-tmp' into lsk-v4.4-16.09-android	2016-12-16 13:52:17 -08:00
memblock.c	mm/memblock: disable local irqs while late memblock changes	2016-05-31 15:26:50 -07:00
memcontrol.c	Merge "Merge branch 'v4.4-16.09-android-tmp' into lsk-v4.4-16.09-android"	2016-12-19 17:04:51 -08:00
memory-failure.c	mm: Enhance per process reclaim to consider shared pages	2016-06-22 14:43:57 -07:00
memory.c	Merge remote-tracking branch 'msm-4.4/tmp-510d0a3f' into msm-4.4	2016-10-21 18:00:55 -07:00
memory_hotplug.c	mm, memory hotplug: small cleanup in online_pages()	2017-02-21 12:37:10 +05:30
mempolicy.c	mm: add a field to store names for private anonymous memory	2016-02-16 13:54:13 -08:00
mempool.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
memtest.c	lib: memtest: Add MEMTEST_ENABLE_DEFAULT option	2016-05-05 15:05:52 -07:00
migrate.c	mm: balloon: use general non-lru movable page feature	2017-02-21 12:38:41 +05:30
mincore.c	mm/mincore: use offset_in_page macro	2015-11-05 19:34:48 -08:00
mlock.c	Merge remote-tracking branch 'lsk-44/linux-linaro-lsk-v4.4' into 44rc2	2016-03-23 20:51:00 -07:00
mm_init.c	mm: meminit: remove mminit_verify_page_links	2015-06-30 19:44:56 -07:00
mmap.c	Revert "arm64: Add support for app specific settings"	2016-08-15 15:08:53 -07:00
mmu_context.c
mmu_notifier.c	mmu-notifier: add clear_young callback	2015-09-10 13:29:01 -07:00
mmzone.c	mm: microoptimize zonelist operations	2015-02-11 17:06:02 -08:00
mprotect.c	mm: add a field to store names for private anonymous memory	2016-02-16 13:54:13 -08:00
mremap.c	mm/mremap: use offset_in_page macro	2015-11-05 19:34:48 -08:00
msync.c	mm/msync: use offset_in_page macro	2015-11-05 19:34:48 -08:00
nobootmem.c	mm: Remove __init annotations from free_bootmem_late	2016-03-22 11:03:23 -07:00
nommu.c	mm/nommu.c: drop unlikely inside BUG_ON()	2015-11-05 19:34:48 -08:00
oom_kill.c	mm, oom: make dump_tasks public	2016-03-22 11:03:30 -07:00
page-writeback.c	Merge remote-tracking branch 'msm4.4/tmp-da9a92f' into msm-4.4	2016-10-28 10:48:35 -07:00
page_alloc.c	mm: migrate: support non-lru movable page migration	2017-02-21 12:38:28 +05:30
page_counter.c	mm: page_counter: let page_counter_try_charge() return bool	2015-11-05 19:34:48 -08:00
page_ext.c	mm: introduce idle page tracking	2015-09-10 13:29:01 -07:00
page_idle.c	mm: introduce idle page tracking	2015-09-10 13:29:01 -07:00
page_io.c	fs: use helper bio_add_page() instead of open coding on bi_io_vec	2015-08-13 12:32:00 -06:00
page_isolation.c	mm: Inform KASAN when allocating pages during isolation	2016-11-23 17:18:03 -08:00
page_owner.c	mm/page_owner: ask users about default setting of PAGE_OWNER	2016-05-03 15:53:55 -07:00
pagewalk.c	mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers	2015-03-25 16:20:30 -07:00
percpu-km.c	percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated	2014-09-02 14:46:05 -04:00
percpu-vm.c	percpu: move region iterations out of pcpu_[de]populate_chunk()	2014-09-02 14:46:02 -04:00
percpu.c	percpu: fix synchronization between synchronous map extension and chunk destruction	2016-07-27 09:47:33 -07:00
pgtable-generic.c	mm,thp: khugepaged: call pte flush at the time of collapse	2016-02-25 12:01:23 -08:00
process_reclaim.c	lowmemorykiller: Introduce sysfs node for ALMK and PPR adj threshold	2016-12-17 16:16:17 +05:30
process_vm_access.c	ptrace: use fsuid, fsgid, effective creds for fs access checks	2016-02-25 12:01:16 -08:00
quicklist.c
readahead.c	mm: change initial readahead window size calculation	2016-03-22 11:03:39 -07:00
rmap.c	mm: Enhance per process reclaim to consider shared pages	2016-06-22 14:43:57 -07:00
shmem.c	Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android	2016-07-29 21:38:37 +01:00
showmem.c	mm: showmem: make the notifiers atomic	2016-03-22 11:03:55 -07:00
slab.c	mm: SLAB hardened usercopy support	2016-08-27 11:23:38 +08:00
slab.h	slab/slub: adjust kmem_cache_alloc_bulk API	2015-11-22 11:58:44 -08:00
slab_common.c	mm: memcontrol: fix cgroup creation failure after many small jobs	2016-08-16 09:30:51 +02:00
slob.c	slab/slub: adjust kmem_cache_alloc_bulk API	2015-11-22 11:58:44 -08:00
slub.c	Merge branch 'v4.4-16.09-android-tmp' into lsk-v4.4-16.09-android	2016-12-16 13:52:17 -08:00
sparse-vmemmap.c
sparse.c	mm: use macros from compiler.h instead of __attribute__((...))	2014-04-07 16:35:54 -07:00
swap.c	mm: make compound_head() robust	2015-11-06 17:50:42 -08:00
swap_cgroup.c	mm: page_cgroup: rename file to mm/swap_cgroup.c	2014-12-10 17:41:09 -08:00
swap_ratio.c	mm: swap_ratio: bail out if there aren't any other swap device	2016-05-31 15:23:38 -07:00
swap_state.c	lowmemorykiller: Don't count swap cache pages twice	2016-04-13 11:11:01 -07:00
swapfile.c	mm: swap: swap ratio support	2016-03-23 21:19:04 -07:00
truncate.c	mm + fs: extends support for cache dropping	2016-03-23 21:24:12 -07:00
usercopy.c	UPSTREAM: usercopy: remove page-spanning test for now	2016-09-14 14:44:29 +05:30
userfaultfd.c	userfaultfd: avoid mmap_sem read recursion in mcopy_atomic	2015-09-04 16:54:41 -07:00
util.c	mm: migrate: support non-lru movable page migration	2017-02-21 12:38:28 +05:30
vmacache.c	mm/vmacache: inline vmacache_valid_mm()	2015-11-05 19:34:48 -08:00
vmalloc.c	mm: Update is_vmalloc_addr to account for vmalloc savings	2016-03-22 11:03:59 -07:00
vmpressure.c	mm: vmpressure: make vmpressure window variable	2016-12-16 20:25:45 +05:30
vmscan.c	mm: balloon: use general non-lru movable page feature	2017-02-21 12:38:41 +05:30
vmstat.c	mm, compaction: introduce kcompactd	2017-02-21 12:36:57 +05:30
workingset.c	list_lru: add helpers to isolate items	2015-02-12 18:54:10 -08:00
zbud.c	mm: zbud: fix the locking scenarios with zcache	2016-08-25 11:49:45 +05:30
zcache.c	mm: zcache: fix merge issues	2016-06-07 11:57:44 -07:00
zpool.c	mm: zsmalloc: constify struct zs_pool name	2015-11-06 17:50:42 -08:00
zsmalloc.c	zsmalloc: introduce zspage structure	2017-02-21 12:40:57 +05:30
zswap.c	Revert "Merge remote-tracking branch 'msm-4.4/tmp-510d0a3f' into msm-4.4"	2016-08-26 14:34:05 -07:00