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Vitaly Wool 2f1e5e4d84 z3fold: use per-page spinlock 
Most of z3fold operations are in-page, such as modifying z3fold page
header or moving z3fold objects within a page.  Taking per-pool spinlock
to protect per-page objects is therefore suboptimal, and the idea of
having a per-page spinlock (or rwlock) has been around for some time.

This patch implements spinlock-based per-page locking mechanism which is
lightweight enough to normally fit ok into the z3fold header.

Link: http://lkml.kernel.org/r/20170131214438.433e0a5fda908337b63206d3@gmail.com
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Reviewed-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-24 17:46:54 -08:00
..
kasan
arm64 updates for 4.11:
2017-02-22 10:46:44 -08:00
backing-dev.c
mm/backing-dev.c: use rb_entry()
2017-02-22 16:41:30 -08:00
balloon_compaction.c
mm: balloon: use general non-lru movable page feature
2016-07-26 16:19:19 -07:00
bootmem.c
mm/bootmem.c: cosmetic improvement of code readability
2017-02-22 16:41:29 -08:00
cleancache.c
cleancache: constify cleancache_ops structure
2016-01-27 09:09:57 -05:00
cma_debug.c
mm/cma_debug: correct size input to bitmap function
2015-07-17 16:39:54 -07:00
cma.c
mm/cma: Cleanup highmem check
2017-01-11 13:56:49 +00:00
cma.h
mm: cma: mark cma_bitmap_maxno() inline in header
2015-08-14 15:56:32 -07:00
compaction.c
mm,compaction: serialize waitqueue_active() checks
2017-02-22 16:41:29 -08:00
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, debug: print raw struct page data in __dump_page()
2016-12-12 18:55:08 -08:00
dmapool.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
early_ioremap.c
mm/early_ioremap: use offset_in_page macro
2015-11-05 19:34:48 -08:00
fadvise.c
mm: fadvise: avoid expensive remote LRU cache draining after FADV_DONTNEED
2016-12-20 09:48:46 -08:00
failslab.c
mm: fault-inject take over bootstrap kmem_cache check
2016-03-15 16:55:16 -07:00
filemap.c
mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
2017-02-24 17:46:54 -08:00
frame_vector.c
mm: replace get_vaddr_frames() write/force parameters with gup_flags
2016-10-19 08:11:24 -07:00
frontswap.c
mm, frontswap: convert frontswap_enabled to static key
2016-07-26 16:19:19 -07:00
gup.c
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
highmem.c
mm/highmem: make nr_free_highpages() handles all highmem zones by itself
2016-05-19 19:12:14 -07:00
huge_memory.c
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
hugetlb_cgroup.c
mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size
2016-05-20 17:58:30 -07:00
hugetlb.c
mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
2017-02-24 17:46:54 -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
mm: Add a user_ns owner to mm_struct and fix ptrace permission checks
2016-11-22 11:49:48 -06:00
internal.h
oom-reaper: use madvise_dontneed() logic to decide if unmap the VMA
2017-02-22 16:41:30 -08:00
interval_tree.c
mm: replace vma->sharead.linear with vma->shared
2015-02-10 14:30:31 -08:00
Kconfig
mm: THP page cache support for ppc64
2016-12-12 18:55:08 -08:00
Kconfig.debug
PM / Hibernate: allow hibernation with PAGE_POISONING_ZERO
2016-09-13 02:35:27 +02:00
khugepaged.c
mm: get rid of __GFP_OTHER_NODE
2017-01-10 18:31:55 -08:00
kmemcheck.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak-test.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak.c
kmemleak: fix reference to Documentation
2016-12-12 18:55:07 -08:00
ksm.c
mm/ksm: improve deduplication of zero pages with colouring
2017-02-24 17:46:53 -08:00
list_lru.c
mm/list_lru.c: avoid error-path NULL pointer deref
2016-10-27 18:43:42 -07:00
maccess.c
x86: remove more uaccess_32.h complexity
2016-05-22 17:21:27 -07:00
madvise.c
userfaultfd: non-cooperative: add madvise() event for MADV_REMOVE request
2017-02-24 17:46:54 -08:00
Makefile
mm/swap: add cache for swap slots allocation
2017-02-22 16:41:30 -08:00
memblock.c
memblock: embed memblock type name within struct memblock_type
2017-02-24 17:46:54 -08:00
memcontrol.c
slab: use memcg_kmem_cache_wq for slab destruction operations
2017-02-22 16:41:27 -08:00
memory_hotplug.c
mm/memory_hotplug.c: unexport __remove_pages()
2017-02-24 17:46:53 -08:00
memory-failure.c
mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked
2016-12-25 11:54:48 -08:00
memory.c
mm: replace FAULT_FLAG_SIZE with parameter to huge_fault
2017-02-24 17:46:54 -08:00
mempolicy.c
mm/mempolicy.c: do not put mempolicy before using its nodemask
2017-01-24 16:26:14 -08:00
mempool.c
Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"
2016-07-28 16:07:41 -07:00
memtest.c
memtest: remove unused header files
2015-09-08 15:35:28 -07:00
migrate.c
mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked
2016-12-25 11:54:48 -08:00
mincore.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
mlock.c
thp: fix corner case of munlock() of PTE-mapped THPs
2016-11-30 16:32:52 -08:00
mm_init.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
mmap.c
mm: fix comments for mmap_init()
2017-02-24 17:46:54 -08:00
mmu_context.c
mm/mmu_context, sched/core: Fix mmu_context.h assumption
2016-04-28 11:44:19 +02:00
mmu_notifier.c
fix Christoph's email addresses
2016-03-17 15:09:34 -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: mprotect: use pmd_trans_unstable instead of taking the pmd_lock
2017-02-22 16:41:29 -08:00
mremap.c
userfaultfd: non-cooperative: optimize mremap_userfaultfd_complete()
2017-02-22 16:41:28 -08:00
msync.c
mm/msync: use offset_in_page macro
2015-11-05 19:34:48 -08:00
nobootmem.c
mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
2016-10-11 15:06:33 -07:00
nommu.c
mm: fix comments for mmap_init()
2017-02-24 17:46:54 -08:00
oom_kill.c
mm, oom: header nodemask is NULL when cpusets are disabled
2017-02-24 17:46:53 -08:00
page_alloc.c
mm, page_alloc: use static global work_struct for draining per-cpu pages
2017-02-24 17:46:54 -08:00
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/page_ext: support extra space allocation by page_ext user
2016-10-07 18:46:27 -07:00
page_idle.c
mm, vmscan: move lru_lock to the node
2016-07-28 16:07:41 -07:00
page_io.c
writeback: add wbc_to_write_flags()
2016-11-02 10:24:03 -06:00
page_isolation.c
mm, page_alloc: avoid page_to_pfn() when merging buddies
2017-02-22 16:41:27 -08:00
page_owner.c
mm/page_owner: don't define fields on struct page_ext by hard-coding
2016-10-07 18:46:27 -07:00
page_poison.c
mm: check the return value of lookup_page_ext for all call sites
2016-06-03 15:06:22 -07:00
page-writeback.c
block: Use pointer to backing_dev_info from request_queue
2017-02-02 08:20:48 -07:00
pagewalk.c
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
percpu-km.c
mm: percpu: use pr_fmt to prefix output
2016-03-17 15:09:34 -07:00
percpu-vm.c
percpu: move region iterations out of pcpu_[de]populate_chunk()
2014-09-02 14:46:02 -04:00
percpu.c
Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2016-12-13 12:34:47 -08:00
pgtable-generic.c
mm, x86: add support for PUD-sized transparent hugepages
2017-02-24 17:46:54 -08:00
process_vm_access.c
mm: unexport __get_user_pages_unlocked()
2016-12-14 16:04:09 -08:00
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
mm, rmap: handle anon_vma_prepare() common case inline
2016-12-12 18:55:08 -08:00
shmem.c
mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
2017-02-24 17:46:54 -08:00
slab_common.c
slab: use memcg_kmem_cache_wq for slab destruction operations
2017-02-22 16:41:27 -08:00
slab.c
slab: introduce __kmemcg_cache_deactivate()
2017-02-22 16:41:27 -08:00
slab.h
slab: remove synchronous synchronize_sched() from memcg cache deactivation path
2017-02-22 16:41:27 -08:00
slob.c
slab: introduce __kmemcg_cache_deactivate()
2017-02-22 16:41:27 -08:00
slub.c
slub: make sysfs directories for memcg sub-caches optional
2017-02-22 16:41:27 -08:00
sparse-vmemmap.c
treewide: replace obsolete _refok by __ref
2016-08-02 17:31:41 -04:00
sparse.c
mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next
2017-02-22 16:41:29 -08:00
swap_cgroup.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
swap_slots.c
mm/swap: skip readahead only when swap slot cache is enabled
2017-02-22 16:41:30 -08:00
swap_state.c
mm/swap: skip readahead only when swap slot cache is enabled
2017-02-22 16:41:30 -08:00
swap.c
mm: vmscan: move dirty pages out of the way until they're flushed
2017-02-24 17:46:54 -08:00
swapfile.c
mm/swap: enable swap slots cache usage
2017-02-22 16:41:30 -08:00
truncate.c
mm: Invalidate DAX radix tree entries only if appropriate
2016-12-26 20:29:24 -08:00
usercopy.c
mm/usercopy: Switch to using lm_alias
2017-01-11 13:56:50 +00:00
userfaultfd.c
userfaultfd: hugetlbfs: add UFFDIO_COPY support for shared mappings
2017-02-22 16:41:28 -08:00
util.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
vmacache.c
mm: unrig VMA cache hit ratio
2016-10-07 18:46:27 -07:00
vmalloc.c
mm, page_alloc: warn_alloc print nodemask
2017-02-22 16:41:30 -08:00
vmpressure.c
mm/vmpressure.c: fix subtree pressure detection
2016-02-03 08:28:43 -08:00
vmscan.c
mm: vmscan: move dirty pages out of the way until they're flushed
2017-02-24 17:46:54 -08:00
vmstat.c
mm, compaction: add vmstats for kcompactd work
2017-02-22 16:41:29 -08:00
workingset.c
mm, vmscan: cleanup lru size claculations
2017-02-22 16:41:30 -08:00
z3fold.c
z3fold: use per-page spinlock
2017-02-24 17:46:54 -08:00
zbud.c
mm/zbud.c: use list_last_entry() instead of list_tail_entry()
2016-01-15 11:40:52 -08:00
zpool.c
mm: zsmalloc: constify struct zs_pool name
2015-11-06 17:50:42 -08:00
zsmalloc.c
mm: fix some typos in mm/zsmalloc.c
2017-02-22 16:41:29 -08:00
zswap.c
zswap: disable changing params if init fails
2017-02-03 14:13:19 -08:00