Roman Gushchin 572d3e8b57 mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors ... commit 24948e3b7b upstream. Objcg vectors attached to slab pages to store slab object ownership information are allocated using gfp flags for the original slab allocation. Depending on slab page order and the size of slab objects, objcg vector can take several pages. If the original allocation was done with the __GFP_NOFAIL flag, it triggered a warning in the page allocation code. Indeed, order > 1 pages should not been allocated with the __GFP_NOFAIL flag. Fix this by simply dropping the __GFP_NOFAIL flag when allocating the objcg vector. It effectively allows to skip the accounting of a single slab object under a heavy memory pressure. An alternative would be to implement the mechanism to fallback to order-0 allocations for accounting metadata, which is also not perfect because it will increase performance penalty and memory footprint of the kernel memory accounting under memory pressure. Link: https://lkml.kernel.org/r/ZUp8ZFGxwmCx4ZFr@P9FQF9L96D.corp.robot.car Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev> Reported-by: Christoph Lameter <cl@linux.com> Closes: https://lkml.kernel.org/r/6b42243e-f197-600a-5d22-56bd728a5ad8@gentwo.org Acked-by: Shakeel Butt <shakeelb@google.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-28 17:20:13 +00:00
..
damon	mm/damon/sysfs: check error from damon_sysfs_update_target()	2023-11-28 17:19:58 +00:00
kasan	kasan: disable kasan_non_canonical_hook() for HW tags	2023-10-18 12:12:41 -07:00
kfence	LoongArch changes for v6.6	2023-09-08 12:16:52 -07:00
kmsan	mm: kmsan: use helper macros PAGE_ALIGN and PAGE_ALIGN_DOWN	2023-08-21 13:37:29 -07:00
backing-dev.c	writeback: remove redundant checks for root memcg	2023-08-21 13:37:48 -07:00
balloon_compaction.c
bootmem_info.c
cma.c	mm/cma: use nth_page() in place of direct struct page manipulation	2023-11-28 17:20:06 +00:00
cma.h
cma_debug.c
cma_sysfs.c
compaction.c	merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes	2023-08-21 14:26:20 -07:00
debug.c
debug_page_alloc.c
debug_page_ref.c
debug_vm_pgtable.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
dmapool.c
dmapool_test.c
early_ioremap.c	mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup()	2023-06-09 16:25:56 -07:00
fadvise.c	mm: remove unnecessary pagevec includes	2023-06-23 16:59:31 -07:00
fail_page_alloc.c
failslab.c
filemap.c	mm: report success more often from filemap_map_folio_range()	2023-09-29 17:20:45 -07:00
folio-compat.c	filemap: Add fgf_t typedef	2023-07-24 18:04:30 -04:00
gup.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
gup_test.c	Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes.	2023-06-23 16:58:19 -07:00
gup_test.h
highmem.c	mm: ptep_get() conversion	2023-06-19 16:19:25 -07:00
hmm.c	mm: enable page walking API to lock vmas during the walk	2023-08-21 13:07:20 -07:00
huge_memory.c	mm: fix for negative counter: nr_file_hugepages	2023-11-28 17:20:13 +00:00
hugetlb.c	mm/hugetlb: use nth_page() in place of direct struct page manipulation	2023-11-28 17:20:06 +00:00
hugetlb_cgroup.c
hugetlb_vmemmap.c	mm: hugetlb_vmemmap: fix a race between vmemmap pmd split	2023-08-18 10:12:14 -07:00
hugetlb_vmemmap.h
hwpoison-inject.c
init-mm.c	mm: move dummy_vm_ops out of a header	2023-08-21 13:37:46 -07:00
internal.h	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
interval_tree.c
io-mapping.c
ioremap.c	mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed	2023-08-18 10:12:36 -07:00
Kconfig	- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")	2023-08-29 14:25:26 -07:00
Kconfig.debug
khugepaged.c	- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")	2023-08-29 14:25:26 -07:00
kmemleak.c	mm/kmemleak: move up cond_resched() call in page scanning loop	2023-09-02 15:17:34 -07:00
ksm.c	mm: memory-failure: use rcu lock instead of tasklist_lock when collect_procs()	2023-09-05 11:11:52 -07:00
list_lru.c
maccess.c
madvise.c	swap: remove remnants of polling from read_swap_cache_async	2023-08-24 16:20:16 -07:00
Makefile	- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")	2023-08-29 14:25:26 -07:00
mapping_dirty_helpers.c	mm: fix clean_record_shared_mapping_range kernel-doc	2023-08-24 16:20:30 -07:00
memblock.c	mm: disable kernelcore=mirror when no mirror memory	2023-08-21 13:37:43 -07:00
memcontrol.c	mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors	2023-11-28 17:20:13 +00:00
memfd.c	revert "memfd: improve userspace warnings for missing exec-related flags".	2023-09-05 11:11:52 -07:00
memory-failure.c	Seven hotfixes. Four are cc:stable and the remainder pertain to issues	2023-09-05 12:22:39 -07:00
memory-tiers.c	memory tier: use helper macro __ATTR_RW()	2023-08-18 10:12:38 -07:00
memory.c	hugetlbfs: close race between MADV_DONTNEED and page fault	2023-10-18 12:12:41 -07:00
memory_hotplug.c	mm/memory_hotplug: use pfn math in place of direct struct page manipulation	2023-11-28 17:20:06 +00:00
mempolicy.c	numa: Generalize numa_map_to_online_node()	2023-11-20 11:58:51 +01:00
mempool.c
memremap.c
memtest.c	mm: memtest: convert to memtest_report_meminfo()	2023-08-21 13:37:47 -07:00
migrate.c	mm/migrate: fix do_pages_move for compat pointers	2023-10-06 14:11:38 -07:00
migrate_device.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
mincore.c	mm: enable page walking API to lock vmas during the walk	2023-08-21 13:07:20 -07:00
mlock.c	merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes	2023-08-21 14:26:20 -07:00
mm_init.c	mm/mm_init: use helper macro BITS_PER_LONG and BITS_PER_BYTE	2023-08-21 13:37:47 -07:00
mm_slot.h
mmap.c	mmap: fix error paths with dup_anon_vma()	2023-10-06 14:11:38 -07:00
mmap_lock.c
mmu_gather.c	mm: fix kernel-doc warning from tlb_flush_rmaps()	2023-08-24 16:20:30 -07:00
mmu_notifier.c	mmu_notifiers: rename invalidate_range notifier	2023-08-18 10:12:41 -07:00
mmzone.c
mprotect.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
mremap.c	vm: fix move_vma() memory accounting being off	2023-09-16 15:23:31 -07:00
msync.c
nommu.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
oom_kill.c	mm: remove redundant K() macro definition	2023-08-21 13:37:44 -07:00
page-writeback.c	mm: remove folio_account_redirty	2023-08-21 14:52:16 +02:00
page_alloc.c	mm/page_alloc: correct start page when guard page debug is enabled	2023-10-06 14:11:38 -07:00
page_counter.c
page_ext.c	mm/page_ext: move functions around for minor cleanups to page_ext	2023-08-18 10:12:31 -07:00
page_idle.c
page_io.c	zswap: make zswap_load() take a folio	2023-08-21 13:37:27 -07:00
page_isolation.c	mm/hugetlb: get rid of page_hstate()	2023-08-18 10:12:39 -07:00
page_owner.c	mm/page_ext: use page_ext_data helper in page_owner	2023-08-21 13:37:27 -07:00
page_poison.c	mm/page_poison: remove unused page_ext.h from page_poison	2023-08-21 13:37:30 -07:00
page_reporting.c
page_reporting.h
page_table_check.c	mm: convert page_table_check_pte_set() to page_table_check_ptes_set()	2023-08-24 16:20:18 -07:00
page_vma_mapped.c	mm: correct stale comment of function check_pte	2023-08-18 10:12:13 -07:00
pagewalk.c	mm/pagewalk: fix bootstopping regression from extra pte_unmap()	2023-09-02 08:39:21 -07:00
percpu-internal.h	percpu-internal/pcpu_chunk: re-layout pcpu_chunk structure to reduce false sharing	2023-06-19 16:19:29 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	mm/percpu.c: print error message too if atomic alloc failed	2023-08-25 08:04:59 -07:00
pgalloc-track.h
pgtable-generic.c	mm/pgtable: notes on pte_offset_map[_lock]()	2023-08-18 10:12:25 -07:00
process_vm_access.c
ptdump.c	mm: ptdump should use ptep_get_lockless()	2023-06-19 16:19:24 -07:00
readahead.c	vfs: fix readahead(2) on block devices	2023-11-20 11:58:52 +01:00
rmap.c	mm: hugetlb: add huge page size param to set_huge_pte_at()	2023-09-29 17:20:47 -07:00
rodata_test.c
secretmem.c	mm/secretmem: use a folio in secretmem_fault()	2023-08-21 13:38:02 -07:00
shmem.c	Revert "tmpfs: add support for multigrain timestamps"	2023-09-20 18:05:30 +02:00
shmem_quota.c	shmem: Add default quota limit mount options	2023-08-09 09:15:40 +02:00
show_mem.c	mm,thp: no space after colon in Mem-Info fields	2023-08-21 13:38:01 -07:00
shrinker_debug.c	Revert "mm: shrinkers: make count and scan in shrinker debugfs lockless"	2023-06-19 13:19:34 -07:00
shuffle.c
shuffle.h
slab.c	Randomized slab caches for kmalloc()	2023-07-18 10:07:47 +02:00
slab.h	Randomized slab caches for kmalloc()	2023-07-18 10:07:47 +02:00
slab_common.c	mm: slab: Do not create kmalloc caches smaller than arch_slab_minalign()	2023-10-11 15:24:49 +02:00
slub.c	mm/slub: remove freelist_dereference()	2023-07-14 09:57:21 +02:00
sparse-vmemmap.c	mm/vmemmap: allow architectures to override how vmemmap optimization works	2023-08-18 10:12:53 -07:00
sparse.c	mm/sparse: remove redundant judgments from macro for_each_present_section_nr	2023-08-18 10:12:14 -07:00
swap.c	mm: remove references to pagevec	2023-06-23 16:59:30 -07:00
swap.h	swap: remove remnants of polling from read_swap_cache_async	2023-08-24 16:20:16 -07:00
swap_cgroup.c
swap_slots.c
swap_state.c	mm/swap: inline folio_set_swap_entry() and folio_swap_entry()	2023-08-24 16:20:28 -07:00
swapfile.c	mm/swap: inline folio_set_swap_entry() and folio_swap_entry()	2023-08-24 16:20:28 -07:00
truncate.c	- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")	2023-08-29 14:25:26 -07:00
usercopy.c
userfaultfd.c	Add x86 shadow stack support	2023-08-31 12:20:12 -07:00
util.c	parisc: fix mmap_base calculation when stack grows upwards	2023-11-28 17:20:08 +00:00
vmalloc.c	mm: hugetlb: add huge page size param to set_huge_pte_at()	2023-09-29 17:20:47 -07:00
vmpressure.c	net-memcg: Fix scope of sockmem pressure indicators	2023-08-16 12:21:32 +01:00
vmscan.c	mm/swap: inline folio_set_swap_entry() and folio_swap_entry()	2023-08-24 16:20:28 -07:00
vmstat.c	mm/vmstat: remove unused page_ext.h from vmstat	2023-08-21 13:37:30 -07:00
workingset.c	mm: memcg: use rstat for non-hierarchical stats	2023-08-24 16:20:18 -07:00
z3fold.c	mm/z3fold: remove obsolete comment for struct z3fold_pool	2023-08-21 13:37:51 -07:00
zbud.c	mm: zswap: remove shrink from zpool interface	2023-06-19 16:19:27 -07:00
zpool.c	mm: zswap: remove shrink from zpool interface	2023-06-19 16:19:27 -07:00
zsmalloc.c	merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes	2023-08-21 14:26:20 -07:00
zswap.c	mm: zswap: fix pool refcount bug around shrink_worker()	2023-10-18 12:12:40 -07:00