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adbe427b92d18cf3f801e82e9cd664fbe31cea3c
linux/mm
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Vladimir Davydov adbe427b92 memcg: zap mem_cgroup_lookup() 
mem_cgroup_lookup() is a wrapper around mem_cgroup_from_id(), which
checks that id != 0 before issuing the function call.  Today, there is
no point in this additional check apart from optimization, because there
is no css with id <= 0, so that css_from_id, called by
mem_cgroup_from_id, will return NULL for any id <= 0.

Since mem_cgroup_from_id is only called from mem_cgroup_lookup, let us
zap mem_cgroup_lookup, substituting calls to it with mem_cgroup_from_id
and moving the check if id > 0 to css_from_id.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-15 16:35:16 -07:00
..
kasan
kasan, module, vmalloc: rework shadow allocation for modules
2015-03-12 18:46:08 -07:00
backing-dev.c
Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-02-17 16:12:34 -08:00
balloon_compaction.c
mm/balloon_compaction: fix deflation when compaction is disabled
2014-10-29 16:33:15 -07:00
bootmem.c
mem-hotplug: reset node managed pages when hot-adding a new pgdat
2014-11-13 16:17:06 -08:00
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-allocation-trigger-fix
2015-04-14 16:49:00 -07:00
cma.c
mm: cma: constify and use correct signness in mm/cma.c
2015-04-14 16:49:04 -07:00
cma.h
mm: cma: allocation trigger
2015-04-14 16:49:00 -07:00
compaction.c
mm/compaction: enhance compaction finish condition
2015-04-14 16:49:01 -07:00
debug-pagealloc.c
mm/debug-pagealloc: make debug-pagealloc boottime configurable
2014-12-13 12:42:48 -08:00
debug.c
mm: account pmd page tables to the process
2015-02-11 17:06:04 -08:00
dmapool.c
mm/dmapool.c: fixed a brace coding style issue
2014-10-09 22:26:00 -04:00
early_ioremap.c
mm: create generic early_ioremap() support
2014-04-07 16:36:15 -07:00
fadvise.c
vfs: remove get_xip_mem
2015-02-16 17:56:03 -08:00
failslab.c
…
filemap.c
Merge branch 'akpm' (patches from Andrew)
2015-04-14 16:49:17 -07:00
frontswap.c
mm/frontswap.c: fix the condition in BUG_ON
2014-12-10 17:41:08 -08:00
gup.c
mm: move mm_populate()-related code to mm/gup.c
2015-04-14 16:49:00 -07:00
highmem.c
mm/highmem: make kmap cache coloring aware
2014-08-06 18:01:22 -07:00
huge_memory.c
mm, thp: really limit transparent hugepage allocation to local node
2015-04-14 16:49:03 -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, hugetlb: abort __get_user_pages if current has been oom killed
2015-04-14 16:49:06 -07:00
hwpoison-inject.c
mm/hwpoison-inject.c: remove unnecessary null test before debugfs_remove_recursive
2014-08-06 18:01:19 -07:00
init-mm.c
…
internal.h
mm/compaction: enhance compaction finish condition
2015-04-14 16:49:01 -07:00
interval_tree.c
mm: replace vma->sharead.linear with vma->shared
2015-02-10 14:30:31 -08:00
Kconfig
mm: cma: debugfs interface
2015-04-14 16:49:00 -07:00
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: disable kasan instrumentation for kmemleak
2015-02-13 21:21:41 -08:00
ksm.c
mm: remove rest usage of VM_NONLINEAR and pte_file()
2015-02-10 14:30:31 -08:00
list_lru.c
memcg: reparent list_lrus and free kmemcg_id on css offline
2015-02-12 18:54:10 -08:00
maccess.c
…
madvise.c
vfs: remove get_xip_mem
2015-02-16 17:56:03 -08:00
Makefile
mm: move memtest under mm
2015-04-14 16:49:06 -07:00
memblock.c
mm/memblock.c: rename local variable of memblock_type to `type'
2015-04-14 16:49:00 -07:00
memcontrol.c
memcg: zap mem_cgroup_lookup()
2015-04-15 16:35:16 -07:00
memory_hotplug.c
mm, hotplug: fix concurrent memory hot-add deadlock
2015-04-14 16:49:00 -07:00
memory-failure.c
mm: hwpoison: drop lru_add_drain_all() in __soft_offline_page()
2015-02-12 18:54:11 -08:00
memory.c
mm: refactor do_wp_page handling of shared vma into a function
2015-04-14 16:49:03 -07:00
mempolicy.c
mm, thp: really limit transparent hugepage allocation to local node
2015-04-14 16:49:03 -07:00
mempool.c
mm, mempool: do not allow atomic resizing
2015-04-14 16:49:06 -07:00
memtest.c
memtest: use phys_addr_t for physical addresses
2015-04-14 16:49:06 -07:00
migrate.c
mm: numa: remove migrate_ratelimited
2015-04-14 16:49:05 -07:00
mincore.c
mincore: apply page table walker on do_mincore()
2015-02-11 17:06:06 -08:00
mlock.c
mm: move mm_populate()-related code to mm/gup.c
2015-04-14 16:49:00 -07:00
mm_init.c
mm/mm_init.c: mark mminit_loglevel __meminitdata
2015-02-12 18:54:11 -08:00
mmap.c
mm: rename __mlock_vma_pages_range() to populate_vma_page_range()
2015-04-14 16:49:00 -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
mm: numa: preserve PTE write permissions across a NUMA hinting fault
2015-03-25 16:20:31 -07:00
mremap.c
fix mremap() vs. ioctx_kill() race
2015-04-06 17:50:59 -04:00
msync.c
mm: remove rest usage of VM_NONLINEAR and pte_file()
2015-02-10 14:30:31 -08:00
nobootmem.c
mem-hotplug: reset node managed pages when hot-adding a new pgdat
2014-11-13 16:17:06 -08:00
nommu.c
mm/nommu.c: export symbol max_mapnr
2015-03-12 18:46:08 -07:00
oom_kill.c
mm/oom_kill.c: fix typo in comment
2015-04-15 16:35:16 -07:00
page_alloc.c
mm/page_alloc.c: clean up comment
2015-04-14 16:49:04 -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: move struct kiocb to fs.h
2015-03-25 20:28:11 -04:00
page_isolation.c
mm/page_alloc.c: call kernel_map_pages in unset_migrateype_isolate
2015-03-25 16:20:30 -07:00
page_owner.c
mm/page_owner.c: remove unnecessary stack_trace field
2015-02-11 17:06:07 -08:00
page-writeback.c
page_writeback: clean up mess around cancel_dirty_page()
2015-04-14 16:49:01 -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 trivial typos in comments
2015-03-24 13:41:54 -04:00
pgtable-generic.c
mm: convert p[te|md]_mknonnuma and remaining page table manipulations
2015-02-12 18:54:08 -08:00
process_vm_access.c
process_vm_access: switch to {compat_,}import_iovec()
2015-04-11 22:27:12 -04:00
quicklist.c
…
readahead.c
fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info
2015-01-20 14:03:04 -07:00
rmap.c
mm: fix anon_vma->degree underflow in anon_vma endless growing prevention
2015-03-25 16:20:30 -07:00
shmem.c
Merge branch 'iocb' into for-next
2015-04-11 22:24:41 -04:00
slab_common.c
mm: slub: add kernel address sanitizer support for slub allocator
2015-02-13 21:21:41 -08:00
slab.c
mm: remove GFP_THISNODE
2015-04-14 16:49:03 -07:00
slab.h
slub: make dead caches discard free slabs immediately
2015-02-12 18:54:10 -08:00
slob.c
slob: make slob_alloc_node() static and remove EXPORT_SYMBOL()
2015-04-14 16:48:59 -07:00
slub.c
slub: use bool function return values of true/false not 1/0
2015-04-14 16:48:59 -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
fs: remove mapping->backing_dev_info
2015-01-20 14:03:05 -07:00
swap.c
Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block
2015-02-12 13:50:21 -08:00
swapfile.c
mm: page_cgroup: rename file to mm/swap_cgroup.c
2014-12-10 17:41:09 -08:00
truncate.c
page_writeback: clean up mess around cancel_dirty_page()
2015-04-14 16:49:01 -07:00
util.c
mm/util: add kstrdup_const
2015-02-13 21:21:35 -08:00
vmacache.c
mm,vmacache: count number of system-wide flushes
2014-12-13 12:42:48 -08:00
vmalloc.c
mm: change vunmap to tear down huge KVA mappings
2015-04-14 16:49:04 -07:00
vmpressure.c
mm/vmpressure.c: fix race in vmpressure_work_fn()
2014-12-02 17:32:07 -08:00
vmscan.c
Merge branch 'akpm' (patches from Andrew)
2015-02-12 18:54:28 -08:00
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
mm/zpool: add name argument to create zpool
2015-02-12 18:54:12 -08:00
zpool.c
mm/zpool: add name argument to create zpool
2015-02-12 18:54:12 -08:00
zsmalloc.c
mm/zsmalloc: add statistics support
2015-02-12 18:54:12 -08:00
zswap.c
mm/zpool: add name argument to create zpool
2015-02-12 18:54:12 -08:00