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Hugh Dickins 2d11e73815 mm/filemap: fix find_lock_entries hang on 32-bit THP 
No problem on 64-bit, or without huge pages, but xfstests generic/308
hung uninterruptibly on 32-bit huge tmpfs.

Since commit 0cc3b0ec23ce ("Clarify (and fix) in 4.13 MAX_LFS_FILESIZE
macros"), MAX_LFS_FILESIZE is only a PAGE_SIZE away from wrapping 32-bit
xa_index to 0, so the new find_lock_entries() has to be extra careful
when handling a THP.

Link: https://lkml.kernel.org/r/alpine.LSU.2.11.2104211735430.3299@eggly.anvils
Fixes: 5c211ba29deb ("mm: add and use find_lock_entries")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-23 14:42:39 -07:00
..
kasan
kasan: remove redundant config option
2021-04-16 16:10:36 -07:00
kfence
kfence: make compatible with kmemleak
2021-03-25 09:22:55 -07:00
backing-dev.c
mm/backing-dev.c: use might_alloc()
2021-02-26 09:41:01 -08:00
balloon_compaction.c
…
cleancache.c
…
cma_debug.c
debugfs: make sure we can remove u32_array files cleanly
2020-07-10 13:54:00 -07:00
cma.c
mm: cma: print region name on failure
2021-02-26 09:41:00 -08:00
cma.h
mm: cma: use CMA_MAX_NAME to define the length of cma name array
2020-09-01 09:19:43 +02:00
compaction.c
mm, compaction: make fast_isolate_freepages() stay within zone
2021-02-24 13:38:34 -08:00
debug_page_ref.c
…
debug_vm_pgtable.c
mm/debug_vm_pgtable/basic: iterate over entire protection_map[]
2021-02-24 13:38:27 -08:00
debug.c
mm/debug: improve memcg debugging
2021-02-24 13:38:27 -08:00
dmapool.c
mm/dmapool: use might_alloc()
2021-02-26 09:41:01 -08:00
early_ioremap.c
mm/early_ioremap.c: use __func__ instead of function name
2021-02-26 09:41:02 -08:00
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: fix find_lock_entries hang on 32-bit THP
2021-04-23 14:42:39 -07:00
frontswap.c
mm/frontswap: mark various intentional data races
2020-08-14 19:56:56 -07:00
gup_test.c
mm/gup_test.c: mark gup_test_init as __init function
2020-12-15 12:13:38 -08:00
gup_test.h
selftests/vm: gup_test: introduce the dump_pages() sub-test
2020-12-15 12:13:38 -08:00
gup.c
mm/gup: check page posion status for coredump.
2021-04-09 14:54:23 -07:00
highmem.c
mm/highmem: fix CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP
2021-03-25 09:22:55 -07:00
hmm.c
mm: do page fault accounting in handle_mm_fault
2020-08-12 10:58:02 -07:00
huge_memory.c
mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument
2021-03-13 11:27:31 -08:00
hugetlb_cgroup.c
hugetlb_cgroup: fix imbalanced css_get and css_put pair for shared mappings
2021-03-25 09:22:55 -07:00
hugetlb.c
hugetlb_cgroup: fix imbalanced css_get and css_put pair for shared mappings
2021-03-25 09:22:55 -07:00
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
2020-12-15 12:13:39 -08:00
internal.h
mm/gup: check page posion status for coredump.
2021-04-09 14:54:23 -07:00
interval_tree.c
…
ioremap.c
mm: move p?d_alloc_track to separate header file
2020-08-07 11:33:26 -07:00
Kconfig
media: videobuf2: Move frame_vector into media subsystem
2021-01-12 14:15:31 +01:00
Kconfig.debug
mm, page_poison: remove CONFIG_PAGE_POISONING_ZERO
2020-12-15 12:13:46 -08:00
khugepaged.c
mm,thp,shmem: make khugepaged obey tmpfs mount flags
2021-02-26 09:40:59 -08:00
kmemleak.c
kfence: make compatible with kmemleak
2021-03-25 09:22:55 -07:00
ksm.c
mm: cleanup kstrto*() usage
2020-12-15 12:13:47 -08:00
list_lru.c
mm/list_lru.c: remove kvfree_rcu_local()
2021-02-24 13:38:30 -08:00
maccess.c
uaccess: add force_uaccess_{begin,end} helpers
2020-08-12 10:57:59 -07:00
madvise.c
mm/madvise: replace ptrace attach requirement for process_madvise
2021-03-13 11:27:30 -08:00
Makefile
mm: add Kernel Electric-Fence infrastructure
2021-02-26 09:41:02 -08:00
mapping_dirty_helpers.c
mm/mapping_dirty_helpers: guard hugepage pud's usage
2021-04-16 16:10:37 -07:00
memblock.c
memblock: remove return value of memblock_free_all()
2021-02-22 13:01:23 -08:00
memcontrol.c
mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument
2021-03-13 11:27:31 -08:00
memfd.c
…
memory_hotplug.c
arm64: mte: Map hotplugged memory as Normal Tagged
2021-03-10 10:56:46 +00:00
memory-failure.c
mm: fix memory_failure() handling of dax-namespace metadata
2021-02-26 09:41:00 -08:00
memory.c
mm: fix race by making init_zero_pfn() early_initcall
2021-03-30 09:46:12 -07:00
mempolicy.c
mm/mempolicy: use helper range_in_vma() in queue_pages_test_walk()
2021-02-24 13:38:34 -08:00
mempool.c
kasan: move _RET_IP_ to inline wrappers
2021-02-24 13:38:31 -08:00
memremap.c
mm/memory_hotplug: prevalidate the address range being added with platform
2021-02-26 09:41:00 -08:00
memtest.c
…
migrate.c
mm: memcg: add swapcache stat for memcg v2
2021-02-24 13:38:29 -08:00
mincore.c
inode: make init and permission helpers idmapped mount aware
2021-01-24 14:27:16 +01:00
mlock.c
mm/mlock: stop counting mlocked pages when none vma is found
2021-02-26 09:41:01 -08:00
mm_init.c
mm: fix fall-through warnings for Clang
2020-12-15 12:13:47 -08:00
mmap_lock.c
mm: mmap_lock: add tracepoints around lock acquisition
2020-12-15 12:13:41 -08:00
mmap.c
mm/mmap.c: remove unnecessary local variable
2021-02-24 13:38:30 -08:00
mmu_gather.c
mm: eliminate "expecting prototype" kernel-doc warnings
2021-04-16 16:10:36 -07:00
mmu_notifier.c
mm/mmu_notifiers: ensure range_end() is paired with range_start()
2021-03-25 09:22:55 -07:00
mmzone.c
mm/lru: replace pgdat lru_lock with lruvec lock
2020-12-15 14:48:04 -08:00
mprotect.c
mm/mprotect.c: optimize error detection in do_mprotect_pkey()
2021-02-24 13:38:30 -08:00
mremap.c
mm: mremap: unlink anon_vmas when mremap with MREMAP_DONTUNMAP success
2021-02-24 13:38:30 -08:00
msync.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
nommu.c
mm/nommu: Fix return type of filemap_map_pages()
2021-01-28 14:10:31 +00:00
oom_kill.c
mm: eliminate "expecting prototype" kernel-doc warnings
2021-04-16 16:10:36 -07:00
page_alloc.c
mm/memcg: set memcg when splitting page
2021-03-13 11:27:31 -08:00
page_counter.c
mm/page_counter: use page_counter_read in page_counter_set_max
2020-12-15 12:13:40 -08:00
page_ext.c
mm: fix some spelling mistakes in comments
2020-12-15 22:46:19 -08:00
page_idle.c
mm: page_idle_get_page() does not need lru_lock
2020-12-15 14:48:03 -08:00
page_io.c
swap: fix swapfile read/write offset
2021-03-02 17:25:46 -07:00
page_isolation.c
mm/page_isolation: do not isolate the max order page
2020-12-15 12:13:45 -08:00
page_owner.c
mm/page_owner: use helper function zone_end_pfn() to get end_pfn
2021-02-24 13:38:27 -08:00
page_poison.c
kasan: fix conflict with page poisoning
2021-04-09 14:54:23 -07:00
page_reporting.c
mm/page_reporting: use list_entry_is_head() in page_reporting_cycle()
2021-02-24 13:38:30 -08:00
page_reporting.h
mm: introduce include/linux/pgtable.h
2020-06-09 09:39:13 -07:00
page_vma_mapped.c
mm/page_vma_mapped.c: add colon to fix kernel-doc markups error for check_pte
2020-12-15 12:13:41 -08:00
page-writeback.c
mm/writeback: Add wait_on_page_writeback_killable
2021-03-23 20:54:29 +00:00
pagewalk.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
percpu-internal.h
percpu: make pcpu_nr_empty_pop_pages per chunk type
2021-04-09 13:58:38 +00:00
percpu-km.c
mm: memcg/percpu: account percpu memory to memory cgroups
2020-08-12 10:57:55 -07:00
percpu-stats.c
percpu: make pcpu_nr_empty_pop_pages per chunk type
2021-04-09 13:58:38 +00:00
percpu-vm.c
mm: memcg/percpu: account percpu memory to memory cgroups
2020-08-12 10:57:55 -07:00
percpu.c
percpu: make pcpu_nr_empty_pop_pages per chunk type
2021-04-09 13:58:38 +00:00
pgalloc-track.h
mm: move p?d_alloc_track to separate header file
2020-08-07 11:33:26 -07:00
pgtable-generic.c
mm/pgtable-generic.c: optimize the VM_BUG_ON condition in pmdp_huge_clear_flush()
2021-02-24 13:38:30 -08:00
process_vm_access.c
mm/process_vm_access.c: include compat.h
2021-01-12 18:12:54 -08:00
ptdump.c
mm: ptdump: fix build failure
2021-04-16 16:10:37 -07:00
readahead.c
mm: use limited read-ahead to satisfy read
2020-10-17 13:49:08 -06:00
rmap.c
mm/rmap: correct obsolete comment of page_get_anon_vma()
2021-02-26 09:41:01 -08:00
rodata_test.c
mm/rodata_test.c: fix missing function declaration
2020-08-21 09:52:53 -07:00
shmem.c
mm,shmem,thp: limit shmem THP allocations to requested zones
2021-02-26 09:40:59 -08:00
shuffle.c
mm: eliminate "expecting prototype" kernel-doc warnings
2021-04-16 16:10:36 -07:00
shuffle.h
mm/shuffle: remove dynamic reconfiguration
2020-08-07 11:33:29 -07:00
slab_common.c
kasan, mm: optimize krealloc poisoning
2021-02-26 09:41:03 -08:00
slab.c
kfence, slab: fix cache_alloc_debugcheck_after() for bulk allocations
2021-03-13 11:27:30 -08:00
slab.h
mm: memcg/slab: pre-allocate obj_cgroups for slab caches with SLAB_ACCOUNT
2021-02-24 13:38:29 -08:00
slob.c
mm, tracing: record slab name for kmem_cache_free()
2021-02-24 13:38:26 -08:00
slub.c
Revert "mm, slub: consider rest of partial list if acquire_slab() fails"
2021-03-10 10:18:04 -08:00
sparse-vmemmap.c
mm/sparse: only sub-section aligned range would be populated
2020-08-07 11:33:27 -07:00
sparse.c
mm/memory_hotplug: guard more declarations by CONFIG_MEMORY_HOTPLUG
2020-10-16 11:11:18 -07:00
swap_cgroup.c
mm: memcontrol: make swap tracking an integral part of memory control
2020-06-03 20:09:48 -07:00
swap_slots.c
mm/swap_slots.c: remove redundant NULL check
2021-02-24 13:38:28 -08:00
swap_state.c
mm: add FGP_ENTRY
2021-02-26 09:40:59 -08:00
swap.c
mm: remove pagevec_lookup_entries
2021-02-26 09:40:59 -08:00
swapfile.c
swap: fix swapfile read/write offset
2021-03-02 17:25:46 -07:00
truncate.c
mm: remove pagevec_lookup_entries
2021-02-26 09:40:59 -08:00
usercopy.c
mm/usercopy.c: delete duplicated word
2020-08-12 10:57:58 -07:00
userfaultfd.c
mm/vmscan: protect the workingset on anonymous LRU
2020-08-12 10:57:55 -07:00
util.c
mm: Make mem_dump_obj() handle vmalloc() memory
2021-01-22 15:24:04 -08:00
vmacache.c
kernel: better document the use_mm/unuse_mm API contract
2020-06-10 19:14:18 -07:00
vmalloc.c
Merge branch 'for-mingo-rcu' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
2021-02-12 12:56:55 +01:00
vmpressure.c
mm: vmpressure: use mem_cgroup_is_root API
2020-04-02 09:35:31 -07:00
vmscan.c
mm/vmscan: restore zone_reclaim_mode ABI
2021-02-24 13:38:34 -08:00
vmstat.c
mm/vmstat.c: erase latency in vmstat_shepherd
2021-02-26 09:41:00 -08:00
workingset.c
mm: workingset: clarify eviction order and distance calculation
2021-02-24 13:38:34 -08:00
z3fold.c
z3fold: prevent reclaim/free race for headless pages
2021-03-25 09:22:55 -07:00
zbud.c
mm: set the sleep_mapped to true for zbud and z3fold
2021-02-26 09:41:01 -08:00
zpool.c
mm/zswap: add the flag can_sleep_mapped
2021-02-26 09:41:01 -08:00
zsmalloc.c
mm/zsmalloc.c: use page_private() to access page->private
2021-02-26 09:41:01 -08:00
zswap.c
mm/zswap: add the flag can_sleep_mapped
2021-02-26 09:41:01 -08:00