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Sergey Senozhatsky b3e237f1f5 zsmalloc: do not take class lock in zs_shrinker_count() 
We can avoid taking class ->lock around zs_can_compact() in
zs_shrinker_count(), because the number that we return back is outdated
in general case, by design.  We have different sources that are able to
change class's state right after we return from zs_can_compact() --
ongoing I/O operations, manually triggered compaction, or two of them
happening simultaneously.

We re-do this calculations during compaction on a per class basis
anyway.

zs_unregister_shrinker() will not return until we have an active
shrinker, so classes won't unexpectedly disappear while
zs_shrinker_count() iterates them.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-08 15:35:28 -07:00
..
kasan
x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()
2015-08-22 14:54:55 +02:00
backing-dev.c
inode: rename i_wb_list to i_io_list
2015-08-17 23:38:10 -04:00
balloon_compaction.c
mm/balloon_compaction: fix deflation when compaction is disabled
2014-10-29 16:33:15 -07:00
bootmem.c
bootmem: avoid freeing to bootmem after bootmem is done
2015-09-08 15:35:28 -07:00
cleancache.c
cleancache: remove limit on the number of cleancache enabled filesystems
2015-04-14 16:49:03 -07:00
cma_debug.c
mm/cma_debug: correct size input to bitmap function
2015-07-17 16:39:54 -07:00
cma.c
mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute
2015-06-24 17:49:44 -07:00
cma.h
mm: cma: mark cma_bitmap_maxno() inline in header
2015-08-14 15:56:32 -07:00
compaction.c
mm/compaction: correct to flush migrated pages if pageblock skip happens
2015-09-08 15:35:28 -07:00
debug-pagealloc.c
mm/debug-pagealloc: make debug-pagealloc boottime configurable
2014-12-13 12:42:48 -08:00
debug.c
tracing: Rename ftrace_event.h to trace_events.h
2015-05-13 14:05:12 -04:00
dmapool.c
mm: add support for __GFP_ZERO flag to dma_pool_alloc()
2015-09-08 15:35:28 -07:00
early_ioremap.c
mm: add utility for early copy from unmapped ram
2015-09-08 15:35:28 -07:00
fadvise.c
writeback: implement and use inode_congested()
2015-06-02 08:33:35 -06:00
failslab.c
…
filemap.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
frontswap.c
frontswap: allow multiple backends
2015-06-24 17:49:45 -07:00
gup.c
mm: make GUP handle pfn mapping unless FOLL_GET is requested
2015-09-04 16:54:41 -07:00
highmem.c
mm/highmem: make kmap cache coloring aware
2014-08-06 18:01:22 -07:00
huge_memory.c
mm/khugepaged: allow interruption of allocation sleep again
2015-09-08 15:35:28 -07:00
hugetlb_cgroup.c
mm: page_counter: pull "-1" handling out of page_counter_memparse()
2015-02-11 17:06:02 -08:00
hugetlb.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
hwpoison-inject.c
mm/hwpoison: fix refcount of THP head page in no-injection case
2015-09-08 15:35:28 -07:00
init-mm.c
…
internal.h
mm/compaction: correct to flush migrated pages if pageblock skip happens
2015-09-08 15:35:28 -07:00
interval_tree.c
mm: replace vma->sharead.linear with vma->shared
2015-02-10 14:30:31 -08:00
Kconfig
mm/Kconfig: NEED_BOUNCE_POOL: clean-up condition
2015-07-23 20:59:41 +02:00
Kconfig.debug
mm/debug_pagealloc: remove obsolete Kconfig options
2015-01-08 15:10:52 -08:00
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: record accurate early log buffer count and report when exceeded
2015-09-08 15:35:28 -07:00
ksm.c
mm: remove rest of ACCESS_ONCE() usages
2015-04-15 16:35:18 -07:00
list_lru.c
list_lru: don't call list_lru_from_kmem if the list_head is empty
2015-09-08 15:35:28 -07:00
maccess.c
lib: move strncpy_from_unsafe() into mm/maccess.c
2015-08-31 12:36:10 -07:00
madvise.c
mm: madvise allow remove operation for hugetlbfs
2015-09-08 15:35:28 -07:00
Makefile
userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation
2015-09-04 16:54:41 -07:00
memblock.c
mm/memblock.c: fix comment in __next_mem_range()
2015-09-08 15:35:28 -07:00
memcontrol.c
memcg: move memcg_proto_active from sock.h
2015-09-08 15:35:28 -07:00
memory_hotplug.c
memory-hotplug: add hot-added memory ranges to memblock before allocate node_data for a node.
2015-09-04 16:54:41 -07:00
memory-failure.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
memory.c
mm, dax: use i_mmap_unlock_write() in do_cow_fault()
2015-09-08 15:35:28 -07:00
mempolicy.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
mempool.c
mm/mempool: allow NULL `pool' pointer in mempool_destroy()
2015-09-08 15:35:28 -07:00
memtest.c
memtest: remove unused header files
2015-09-08 15:35:28 -07:00
migrate.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
mincore.c
mincore: apply page table walker on do_mincore()
2015-02-11 17:06:06 -08:00
mlock.c
userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx
2015-09-04 16:54:41 -07:00
mm_init.c
mm: meminit: remove mminit_verify_page_links
2015-06-30 19:44:56 -07:00
mmap.c
mm/mmap.c:insert_vm_struct(): check for failure before setting values
2015-09-08 15:35:28 -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
mmu_notifier: add the callback for mmu_notifier_invalidate_range()
2014-11-13 13:46:09 +11:00
mmzone.c
mm: microoptimize zonelist operations
2015-02-11 17:06:02 -08:00
mprotect.c
userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx
2015-09-04 16:54:41 -07:00
mremap.c
mremap: simplify the "overlap" check in mremap_to()
2015-09-04 16:54:41 -07:00
msync.c
mm: remove rest usage of VM_NONLINEAR and pte_file()
2015-02-10 14:30:31 -08:00
nobootmem.c
mm: page_alloc: pass PFN to __free_pages_bootmem
2015-06-30 19:44:55 -07:00
nommu.c
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2015-09-01 18:46:42 -07:00
oom_kill.c
mm, oom: remove unnecessary variable
2015-09-08 15:35:28 -07:00
page_alloc.c
mm/page_alloc.c: fix type information of memoryless node
2015-09-08 15:35:28 -07:00
page_counter.c
mm: page_counter: pull "-1" handling out of page_counter_memparse()
2015-02-11 17:06:02 -08:00
page_ext.c
mm/page_owner: keep track of page owners
2014-12-13 12:42:48 -08:00
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, page_isolation: make set/unset_migratetype_isolate() file-local
2015-09-08 15:35:28 -07:00
page_owner.c
mm/page_owner: set correct gfp_mask on page_owner
2015-07-17 16:39:54 -07:00
page-writeback.c
writeback: fix initial dirty limit
2015-08-07 04:39:42 +03:00
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: clean up of schunk->map[] assignment in pcpu_setup_first_chunk
2015-07-21 11:31:00 -04:00
pgtable-generic.c
mm: clarify that the function operates on hugepage pte
2015-06-24 17:49:44 -07:00
process_vm_access.c
process_vm_access: switch to {compat_,}import_iovec()
2015-04-11 22:27:12 -04:00
quicklist.c
…
readahead.c
writeback: implement and use inode_congested()
2015-06-02 08:33:35 -06:00
rmap.c
mm: defer flush of writable TLB entries
2015-09-04 16:54:41 -07:00
shmem.c
shmem: recalculate file inode when fstat
2015-09-08 15:35:28 -07:00
slab_common.c
memcg: export struct mem_cgroup
2015-09-08 15:35:28 -07:00
slab.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
slab.h
mm/slab.h: fix argument order in cache_from_obj's error message
2015-09-04 16:54:41 -07:00
slob.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
slub.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
sparse-vmemmap.c
mm/sparse: use memblock apis for early memory allocations
2014-01-21 16:19:47 -08:00
sparse.c
mm: use macros from compiler.h instead of __attribute__((...))
2014-04-07 16:35:54 -07:00
swap_cgroup.c
mm: page_cgroup: rename file to mm/swap_cgroup.c
2014-12-10 17:41:09 -08:00
swap_state.c
mm: remove rest of ACCESS_ONCE() usages
2015-04-15 16:35:18 -07:00
swap.c
mm: drop bogus VM_BUG_ON_PAGE assert in put_page() codepath
2015-06-24 17:49:42 -07:00
swapfile.c
mm: /proc/pid/smaps:: show proportional swap share of the mapping
2015-09-08 15:35:28 -07:00
truncate.c
memcg: add per cgroup dirty page accounting
2015-06-02 08:33:33 -06:00
userfaultfd.c
userfaultfd: avoid mmap_sem read recursion in mcopy_atomic
2015-09-04 16:54:41 -07:00
util.c
mm: uninline and cleanup page-mapping related helpers
2015-04-15 16:35:19 -07:00
vmacache.c
mm,vmacache: count number of system-wide flushes
2014-12-13 12:42:48 -08:00
vmalloc.c
mm/vmalloc: get rid of dirty bitmap inside vmap_block structure
2015-04-15 16:35:18 -07:00
vmpressure.c
mm/vmpressure.c: fix race in vmpressure_work_fn()
2014-12-02 17:32:07 -08:00
vmscan.c
mm, vmscan: unlock page while waiting on writeback
2015-09-08 15:35:28 -07:00
vmstat.c
vmstat: Reduce time interval to stat update on idle cpu
2015-02-11 17:06:07 -08:00
workingset.c
list_lru: add helpers to isolate items
2015-02-12 18:54:10 -08:00
zbud.c
zpool: remove zpool_evict()
2015-06-25 17:00:37 -07:00
zpool.c
zpool: remove zpool_evict()
2015-06-25 17:00:37 -07:00
zsmalloc.c
zsmalloc: do not take class lock in zs_shrinker_count()
2015-09-08 15:35:28 -07:00
zswap.c
zswap: runtime enable/disable
2015-06-25 17:00:37 -07:00