linux/mm
Josef Bacik ca47e8c72a mm: skip readahead if the cgroup is congested
We noticed in testing we'd get pretty bad latency stalls under heavy
pressure because read ahead would try to do its thing while the cgroup
was under severe pressure.  If we're under this much pressure we want to
do as little IO as possible so we can still make progress on real work
if we're a throttled cgroup, so just skip readahead if our group is
under pressure.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-07-09 09:07:54 -06:00
..
kasan kasan: fix shadow_size calculation error in kasan_module_alloc 2018-07-03 17:32:19 -07:00
Kconfig libnvdimm for 4.18 2018-06-08 17:21:52 -07:00
Kconfig.debug
Makefile mm: restructure memfd code 2018-06-07 17:34:35 -07:00
backing-dev.c bdi: Fix another oops in wb_workfn() 2018-06-22 12:08:07 -06:00
balloon_compaction.c
bootmem.c mm: docs: fix parameter names mismatch 2018-02-06 18:32:48 -08:00
cleancache.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
cma.c Revert "mm/cma: manage the memory of the CMA area by using the ZONE_MOVABLE" 2018-05-24 10:07:50 -07:00
cma.h
cma_debug.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
compaction.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
debug.c mm: teach dump_page() to correctly output poisoned struct pages 2018-07-03 17:32:19 -07:00
debug_page_ref.c
dmapool.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
early_ioremap.c
fadvise.c mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64() 2018-04-02 20:16:10 +02:00
failslab.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
filemap.c mm: use new return type vm_fault_t 2018-06-07 17:34:36 -07:00
frame_vector.c
frontswap.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
gup.c libnvdimm for 4.18 2018-06-08 17:21:52 -07:00
gup_benchmark.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
highmem.c
hmm.c mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS 2018-05-22 06:59:39 -07:00
huge_memory.c memcontrol: schedule throttling if we are congested 2018-07-09 09:07:54 -06:00
hugetlb.c mm: hugetlb: yield when prepping struct pages 2018-07-03 17:32:19 -07:00
hugetlb_cgroup.c mm: rename page_counter's count/limit into usage/max 2018-06-07 17:34:35 -07:00
hwpoison-inject.c
init-mm.c mm: introduce arg_lock to protect arg_start|end and env_start|end in mm_struct 2018-06-07 17:34:34 -07:00
internal.h Changes for 4.18: 2018-06-05 13:24:20 -07:00
interval_tree.c
khugepaged.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
kmemleak-test.c
kmemleak.c mm: kernel-doc: add missing parameter descriptions 2018-04-05 21:36:27 -07:00
ksm.c mm/ksm.c: ignore STABLE_FLAG of rmap_item->address in rmap_walk_ksm() 2018-06-15 07:55:23 +09:00
list_lru.c mm: make counting of list_lru_one::nr_items lockless 2018-04-05 21:36:27 -07:00
maccess.c mm: docs: fix parameter names mismatch 2018-02-06 18:32:48 -08:00
madvise.c
memblock.c revert "mm/memblock: add missing include <linux/bootmem.h>" 2018-06-19 07:43:44 +09:00
memcontrol.c memcontrol: schedule throttling if we are congested 2018-07-09 09:07:54 -06:00
memfd.c mm: restructure memfd code 2018-06-07 17:34:35 -07:00
memory-failure.c mm, migrate: remove reason argument from new_page_t 2018-04-11 10:28:32 -07:00
memory.c memcontrol: schedule throttling if we are congested 2018-07-09 09:07:54 -06:00
memory_hotplug.c mm: move is_pageblock_removable_nolock() to mm/memory_hotplug.c 2018-06-07 17:34:36 -07:00
mempolicy.c mm: unclutter THP migration 2018-04-11 10:28:32 -07:00
mempool.c mempool: Add mempool_init()/mempool_exit() 2018-05-14 13:14:23 -06:00
memtest.c
migrate.c mm: migrate: fix double call of radix_tree_replace_slot() 2018-05-11 17:28:45 -07:00
mincore.c
mlock.c mm, mlock, vmscan: no more skipping pagevecs 2018-02-21 15:35:42 -08:00
mm_init.c
mmap.c mm: change return type to vm_fault_t 2018-06-07 17:34:36 -07:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c sched/numa: avoid trapping faults and attempting migration of file-backed dirty pages 2018-04-11 10:28:31 -07:00
mremap.c mremap: remove LATENCY_LIMIT from mremap to reduce the number of TLB shootdowns 2018-06-15 07:55:24 +09:00
msync.c
nobootmem.c
nommu.c mm: use new return type vm_fault_t 2018-06-07 17:34:36 -07:00
oom_kill.c mm: fix oom_kill event handling 2018-06-15 07:55:25 +09:00
page-writeback.c writeback: safer lock nesting 2018-04-20 17:18:35 -07:00
page_alloc.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
page_counter.c memcg: introduce memory.min 2018-06-07 17:34:36 -07:00
page_ext.c
page_idle.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
page_io.c swap,blkcg: issue swap io with the appropriate context 2018-07-09 09:07:54 -06:00
page_isolation.c mm, migrate: remove reason argument from new_page_t 2018-04-11 10:28:32 -07:00
page_owner.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
page_poison.c mm/page_poison.c: make early_page_poison_param() __init 2018-04-05 21:36:26 -07:00
page_vma_mapped.c
pagewalk.c mm: kernel-doc: add missing parameter descriptions 2018-04-05 21:36:27 -07:00
percpu-internal.h
percpu-km.c percpu: allow select gfp to be passed to underlying allocators 2018-02-18 05:33:01 -08:00
percpu-stats.c treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
percpu-vm.c percpu: allow select gfp to be passed to underlying allocators 2018-02-18 05:33:01 -08:00
percpu.c arch: remove obsolete architecture ports 2018-04-02 20:20:12 -07:00
pgtable-generic.c
process_vm_access.c mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors 2018-02-06 18:32:48 -08:00
quicklist.c
readahead.c mm: skip readahead if the cgroup is congested 2018-07-09 09:07:54 -06:00
rmap.c Linux 4.17-rc2 2018-04-27 17:13:20 -06:00
rodata_test.c
shmem.c memcontrol: schedule throttling if we are congested 2018-07-09 09:07:54 -06:00
slab.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
slab.h slab, slub: skip unnecessary kasan_cache_shutdown() 2018-04-05 21:36:24 -07:00
slab_common.c slub: fix failure when we delete and create a slab cache 2018-06-28 11:16:44 -07:00
slob.c slab: __GFP_ZERO is incompatible with a constructor 2018-06-07 17:34:34 -07:00
slub.c slub: fix failure when we delete and create a slab cache 2018-06-28 11:16:44 -07:00
sparse-vmemmap.c
sparse.c mm/sparse.c: pass the __highest_present_section_nr + 1 to alloc_func() 2018-06-07 17:34:35 -07:00
swap.c mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS 2018-05-22 06:59:39 -07:00
swap_cgroup.c
swap_slots.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
swap_state.c treewide: kvzalloc() -> kvcalloc() 2018-06-12 16:19:22 -07:00
swapfile.c memcontrol: schedule throttling if we are congested 2018-07-09 09:07:54 -06:00
truncate.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
usercopy.c
userfaultfd.c userfaultfd: prevent non-cooperative events vs mcopy_atomic races 2018-06-07 17:34:38 -07:00
util.c mm: kvmalloc does not fallback to vmalloc for incompatible gfp flags 2018-06-07 17:34:38 -07:00
vmacache.c
vmalloc.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
vmpressure.c mm/vmpressure.c: convert to use match_string() helper 2018-06-07 17:34:36 -07:00
vmscan.c memcg: introduce memory.min 2018-06-07 17:34:36 -07:00
vmstat.c Revert mm/vmstat.c: fix vmstat_update() preemption BUG 2018-06-28 11:16:44 -07:00
workingset.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
z3fold.c z3fold: fix reclaim lock-ups 2018-05-11 17:28:45 -07:00
zbud.c mm: docs: fix parameter names mismatch 2018-02-06 18:32:48 -08:00
zpool.c mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc 2018-02-21 15:35:43 -08:00
zsmalloc.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00
zswap.c mm: use octal not symbolic permissions 2018-06-15 07:55:25 +09:00