kernel_optimize_test/mm
Dan Williams dc495b59ff mm: fix memory_failure() handling of dax-namespace metadata
[ Upstream commit 34dc45be4563f344d59ba0428416d0d265aa4f4d ]

Given 'struct dev_pagemap' spans both data pages and metadata pages be
careful to consult the altmap if present to delineate metadata.  In fact
the pfn_first() helper already identifies the first valid data pfn, so
export that helper for other code paths via pgmap_pfn_valid().

Other usage of get_dev_pagemap() are not a concern because those are
operating on known data pfns having been looked up by get_user_pages().
I.e.  metadata pfns are never user mapped.

Link: https://lkml.kernel.org/r/161058501758.1840162.4239831989762604527.stgit@dwillia2-desk3.amr.corp.intel.com
Fixes: 6100e34b25 ("mm, memory_failure: Teach memory_failure() about dev_pagemap pages")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: David Hildenbrand <david@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:38:21 +01:00
..
kasan kasan: fix incorrect arguments passing in kasan_add_zero_shadow 2021-01-27 11:55:23 +01:00
backing-dev.c
balloon_compaction.c
cleancache.c
cma_debug.c
cma.c
cma.h
compaction.c mm/compaction: fix misbehaviors of fast_find_migrateblock() 2021-03-04 11:38:19 +01:00
debug_page_ref.c
debug_vm_pgtable.c mm/debug_vm_pgtable: avoid doing memory allocation with pgtable_t mapped. 2020-10-16 11:11:14 -07:00
debug.c mm, dump_page: rename head_mapcount() --> head_compound_mapcount() 2020-10-13 18:38:29 -07:00
dmapool.c mm/dmapool.c: replace hard coded function name with __func__ 2020-10-13 18:38:32 -07:00
early_ioremap.c
fadvise.c mm, fadvise: improve the expensive remote LRU cache draining after FADV_DONTNEED 2020-10-13 18:38:29 -07:00
failslab.c
filemap.c mm/filemap: add missing mem_cgroup_uncharge() to __add_to_page_cache_locked() 2021-02-10 09:29:21 +01:00
frame_vector.c
frontswap.c
gup_benchmark.c mm/gup_benchmark: take the mmap lock around GUP 2020-10-18 09:27:09 -07:00
gup.c mm/gup: combine put_compound_head() and unpin_user_page() 2020-12-30 11:53:54 +01:00
highmem.c mm/highmem.c: clean up endif comments 2020-10-16 11:11:18 -07:00
hmm.c
huge_memory.c mm: thp: fix MADV_REMOVE deadlock on shmem THP 2021-02-10 09:29:21 +01:00
hugetlb_cgroup.c hugetlb_cgroup: fix offline of hugetlb cgroup with reservations 2020-12-06 10:19:07 -08:00
hugetlb.c mm/hugetlb: suppress wrong warning info when alloc gigantic page 2021-03-04 11:38:19 +01:00
hwpoison-inject.c mm,hwpoison-inject: don't pin for hwpoison_filter 2020-10-16 11:11:16 -07:00
init-mm.c mm/gup: prevent gup_fast from racing with COW during fork 2020-12-30 11:53:54 +01:00
internal.h mm: rename page_order() to buddy_order() 2020-10-16 11:11:19 -07:00
interval_tree.c
ioremap.c
Kconfig mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING 2020-12-06 10:19:07 -08:00
Kconfig.debug
khugepaged.c mm,thp,shmem: make khugepaged obey tmpfs mount flags 2021-03-04 11:38:20 +01:00
kmemleak.c mm/kmemleak: rely on rcu for task stack scanning 2020-10-13 18:38:27 -07:00
ksm.c docs: get rid of :c:type explicit declarations for structs 2020-10-15 07:49:40 +02:00
list_lru.c mm: list_lru: set shrinker map bit when child nr_items is not zero 2020-12-06 10:19:07 -08:00
maccess.c
madvise.c mm,memory_failure: always pin the page in madvise_inject_error 2020-12-30 11:53:55 +01:00
Makefile mm,kmemleak-test.c: move kmemleak-test.c to samples dir 2020-10-13 18:38:27 -07:00
mapping_dirty_helpers.c
memblock.c memblock: do not start bottom-up allocations with kernel_end 2021-02-10 09:29:15 +01:00
memcontrol.c mm: memcontrol: fix NR_ANON_THPS accounting in charge moving 2021-03-04 11:38:19 +01:00
memfd.c
memory_hotplug.c mm: memmap defer init doesn't work as expected 2021-01-06 14:56:50 +01:00
memory-failure.c mm: fix memory_failure() handling of dax-namespace metadata 2021-03-04 11:38:21 +01:00
memory.c mm/memory.c: fix potential pte_unmap_unlock pte error 2021-03-04 11:38:19 +01:00
mempolicy.c mm: mempolicy: fix potential pte_unmap_unlock pte error 2020-11-02 12:14:19 -08:00
mempool.c mm/mempool: add 'else' to split mutually exclusive case 2020-10-13 18:38:34 -07:00
memremap.c mm: fix memory_failure() handling of dax-namespace metadata 2021-03-04 11:38:21 +01:00
memtest.c
migrate.c mm: fix numa stats for thp migration 2021-01-27 11:55:14 +01:00
mincore.c mm: factor find_get_incore_page out of mincore_page 2020-10-13 18:38:29 -07:00
mlock.c
mm_init.c
mmap.c mm/mmap.c: fix mmap return value when vma is merged after call_mmap() 2020-12-06 10:19:07 -08:00
mmu_gather.c
mmu_notifier.c mm/mmu_notifier: fix mmget() assert in __mmu_interval_notifier_insert 2020-10-16 11:11:17 -07:00
mmzone.c
mprotect.c
mremap.c
msync.c
nommu.c mm: remove alloc_vm_area 2020-10-18 09:27:10 -07:00
oom_kill.c mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary 2020-10-13 18:38:35 -07:00
page_alloc.c mm/page_alloc: add a missing mm_page_alloc_zone_locked() tracepoint 2021-01-30 13:55:19 +01:00
page_counter.c mm/page_counter: correct the obsolete func name in the comment of page_counter_try_charge() 2020-10-13 18:38:30 -07:00
page_ext.c
page_idle.c
page_io.c mm/page_io.c: remove useless out label in __swap_writepage() 2020-10-13 18:38:30 -07:00
page_isolation.c mm: rename page_order() to buddy_order() 2020-10-16 11:11:19 -07:00
page_owner.c mm: rename page_order() to buddy_order() 2020-10-16 11:11:19 -07:00
page_poison.c mm/page_poison.c: replace bool variable with static key 2020-10-16 11:11:17 -07:00
page_reporting.c mm: rename page_order() to buddy_order() 2020-10-16 11:11:19 -07:00
page_reporting.h
page_vma_mapped.c
page-writeback.c mm: make wait_on_page_writeback() wait for multiple pending writebacks 2021-01-12 20:18:22 +01:00
pagewalk.c
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c percpu: convert flexible array initializers to use struct_size() 2020-10-30 23:02:28 +00:00
pgalloc-track.h
pgtable-generic.c
process_vm_access.c mm/process_vm_access.c: include compat.h 2021-01-19 18:27:21 +01:00
ptdump.c
readahead.c mm: use limited read-ahead to satisfy read 2020-10-17 13:49:08 -06:00
rmap.c mm/rmap: always do TTU_IGNORE_ACCESS 2020-12-30 11:53:55 +01:00
rodata_test.c
shmem.c fs: add a filesystem flag for THPs 2020-10-16 11:11:15 -07:00
shuffle.c mm: rename page_order() to buddy_order() 2020-10-16 11:11:19 -07:00
shuffle.h
slab_common.c mm: memcontrol: fix slub memory accounting 2021-03-04 11:38:19 +01:00
slab.c mm: fix some comments formatting 2020-10-16 11:11:19 -07:00
slab.h mm: memcg/slab: fix obj_cgroup_charge() return value handling 2020-12-06 10:19:07 -08:00
slob.c
slub.c mm: memcontrol: fix slub memory accounting 2021-03-04 11:38:19 +01:00
sparse-vmemmap.c
sparse.c mm/memory_hotplug: guard more declarations by CONFIG_MEMORY_HOTPLUG 2020-10-16 11:11:18 -07:00
swap_cgroup.c
swap_slots.c mm/swap_slots.c: remove always zero and unused return value of enable_swap_slots_cache() 2020-10-13 18:38:30 -07:00
swap_state.c mm: fix some broken comments 2020-10-16 11:11:19 -07:00
swap.c mm: move call to compound_head() in release_pages() 2020-10-13 18:38:33 -07:00
swapfile.c mm: fix a race on nr_swap_pages 2021-01-30 13:55:19 +01:00
truncate.c mm/truncate.c: make __invalidate_mapping_pages() static 2020-11-02 12:14:19 -08:00
usercopy.c
userfaultfd.c
util.c mm/util.c: update the kerneldoc for kstrdup_const() 2020-10-16 11:11:17 -07:00
vmacache.c
vmalloc.c mm/vmalloc.c: fix potential memory leak 2021-01-19 18:27:21 +01:00
vmpressure.c
vmscan.c mm: don't put pinned pages into the swap cache 2021-01-19 18:27:29 +01:00
vmstat.c mm/vmstat.c: use helper macro abs() 2020-10-16 11:11:17 -07:00
workingset.c XArray updates for 5.9 2020-10-20 14:39:37 -07:00
z3fold.c z3fold: stricter locking and more careful reclaim 2020-12-30 11:54:10 +01:00
zbud.c mm/zbud: remove redundant initialization 2020-10-13 18:38:34 -07:00
zpool.c
zsmalloc.c mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING 2020-12-06 10:19:07 -08:00
zswap.c