Michal Hocko 1af8efe965 memcg: change memcg_oom_mutex to spinlock ... memcg_oom_mutex is used to protect memcg OOM path and eventfd interface for oom_control. None of the critical sections which it protects sleep (eventfd_signal works from atomic context and the rest are simple linked list resp. oom_lock atomic operations). Mutex is also too heavyweight for those code paths because it triggers a lot of scheduling. It also makes makes convoying effects more visible when we have a big number of oom killing because we take the lock mutliple times during mem_cgroup_handle_oom so we have multiple places where many processes can sleep. Signed-off-by: Michal Hocko <mhocko@suse.cz> Cc: Balbir Singh <bsingharora@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-07-26 16:49:42 -07:00
..
backing-dev.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback	2011-07-26 10:39:54 -07:00
bootmem.c
bounce.c
cleancache.c	mm: cleancache core ops functions and config	2011-05-26 10:01:36 -06:00
compaction.c	mm: compaction: abort compaction if too many pages are isolated and caller is asynchronous V2	2011-06-15 20:04:02 -07:00
debug-pagealloc.c
dmapool.c	devres: fix possible use after free	2011-07-25 20:57:14 -07:00
fadvise.c
failslab.c
filemap_xip.c
filemap.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback	2011-07-26 10:39:54 -07:00
fremap.c	mm: don't access vm_flags as 'int'	2011-05-26 09:20:31 -07:00
highmem.c
huge_memory.c	mm/huge_memory.c: minor lock simplification in __khugepaged_exit	2011-07-25 20:57:09 -07:00
hugetlb.c	mm: hugetlb: fix coding style issues	2011-07-25 20:57:09 -07:00
hwpoison-inject.c
init-mm.c	mm: convert mm->cpu_vm_cpumask into cpumask_var_t	2011-05-25 08:39:21 -07:00
internal.h
Kconfig	mm Kconfig typo: cleancacne -> cleancache	2011-06-10 14:47:52 +02:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c	ksm: fix NULL pointer dereference in scan_get_next_rmap_item()	2011-06-15 20:04:02 -07:00
maccess.c	maccess,probe_kernel: Make write/read src const void *	2011-05-25 19:56:23 -04:00
madvise.c	fs: kill i_alloc_sem	2011-07-20 20:47:46 -04:00
Makefile	mm: cleancache core ops functions and config	2011-05-26 10:01:36 -06:00
memblock.c	mm/memblock.c: avoid abuse of RED_INACTIVE	2011-07-25 20:57:09 -07:00
memcontrol.c	memcg: change memcg_oom_mutex to spinlock	2011-07-26 16:49:42 -07:00
memory_hotplug.c	mm: extend memory hotplug API to allow memory hotplug in virtual machines	2011-07-25 20:57:08 -07:00
memory-failure.c	mm/memory-failure.c: fix spinlock vs mutex order	2011-06-27 18:00:13 -07:00
memory.c	mm/futex: fix futex writes on archs with SW tracking of dirty & young	2011-07-25 20:57:11 -07:00
mempolicy.c	mm: proc: move show_numa_map() to fs/proc/task_mmu.c	2011-05-25 08:39:34 -07:00
mempool.c
migrate.c	migrate: don't account swapcache as shmem	2011-06-16 15:01:24 -07:00
mincore.c
mlock.c	mm: don't access vm_flags as 'int'	2011-05-26 09:20:31 -07:00
mm_init.c
mmap.c	mmap: fix and tidy up overcommit page arithmetic	2011-07-25 20:57:09 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c	memblock/nobootmem: remove unneeded code from alloc_bootmem_node_high()	2011-05-25 08:39:31 -07:00
nommu.c	mmap: fix and tidy up overcommit page arithmetic	2011-07-25 20:57:09 -07:00
oom_kill.c	oom: remove references to old badness() function	2011-07-25 20:57:09 -07:00
page_alloc.c	mm: page allocator: reconsider zones for allocation after direct reclaim	2011-07-25 20:57:10 -07:00
page_cgroup.c	mm/page_cgroup.c: simplify code by using SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macros	2011-07-25 20:57:09 -07:00
page_io.c
page_isolation.c
page-writeback.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback	2011-07-26 10:39:54 -07:00
pagewalk.c	pagewalk: fix code comment for THP	2011-07-25 20:57:09 -07:00
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
prio_tree.c
quicklist.c
readahead.c	readahead: readahead page allocations are OK to fail	2011-05-25 08:39:25 -07:00
rmap.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback	2011-07-26 10:39:54 -07:00
shmem.c	Merge 'akpm' patch series	2011-07-25 21:00:19 -07:00
slab.c	Merge branch 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2011-07-22 12:44:30 -07:00
slob.c	slob/lockdep: Fix gfp flags passed to lockdep	2011-06-07 21:38:07 +03:00
slub.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-07-25 13:56:39 -07:00
sparse-vmemmap.c
sparse.c	mm: make some struct page's const	2011-07-25 20:57:07 -07:00
swap_state.c
swap.c	mm: batch activate_page() to reduce lock contention	2011-05-25 08:39:37 -07:00
swapfile.c	fs: seq_file - add event counter to simplify poll() support	2011-07-20 20:47:50 -04:00
thrash.c	mm: swap-token: add a comment for priority aging	2011-07-25 20:57:08 -07:00
truncate.c	mm: pincer in truncate_inode_pages_range	2011-07-25 20:57:10 -07:00
util.c
vmalloc.c	vmalloc,rcu: Convert call_rcu(rcu_free_vb) to kfree_rcu()	2011-07-20 14:10:18 -07:00
vmscan.c	memcg: consolidate memory cgroup lru stat functions	2011-07-26 16:49:42 -07:00
vmstat.c