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linux/mm
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Mike Kravetz 1139d336ff mm/hugetlb.c: fix pages per hugetlb calculation 
The routine hpage_nr_pages() was incorrectly used to calculate the number
of base pages in a hugetlb page.  hpage_nr_pages is designed to be called
for THP pages and will return HPAGE_PMD_NR for hugetlb pages of any size.

Due to the context in which hpage_nr_pages was called, it is unlikely to
produce a user visible error.  The routine with the incorrect call is only
exercised in the case of hugetlb memory error or migration.  In addition,
this would need to be on an architecture which supports huge page sizes
less than PMD_SIZE.  And, the vma containing the huge page would also need
to smaller than PMD_SIZE.

Fixes: c0d0381ade79 ("hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization")
Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200629185003.97202-1-mike.kravetz@oracle.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-03 16:15:25 -07:00
..
kasan
mm: remove __ARCH_HAS_5LEVEL_HACK and include/asm-generic/5level-fixup.h
2020-06-04 19:06:21 -07:00
backing-dev.c
bdi: remove the name field in struct backing_dev_info
2020-05-09 16:15:13 -06:00
balloon_compaction.c
mm/balloon_compaction: suppress allocation warnings
2019-09-04 07:42:01 -04:00
cleancache.c
Driver Core and debugfs changes for 5.3-rc1
2019-07-12 12:24:03 -07:00
cma_debug.c
mm/cma_debug.c: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops
2019-12-01 12:59:09 -08:00
cma.c
mm: cma: NUMA node interface
2020-04-10 15:36:21 -07:00
cma.h
…
compaction.c
mm, compaction: make capture control handling safe wrt interrupts
2020-06-26 00:27:36 -07:00
debug_page_ref.c
…
debug_vm_pgtable.c
mm/debug_vm_pgtable: fix build failure with powerpc 8xx
2020-06-26 00:27:37 -07:00
debug.c
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
dmapool.c
mm/dmapool.c: micro-optimisation remove unnecessary branch
2020-04-07 10:43:42 -07:00
early_ioremap.c
mm/early_ioremap.c: use %pa to print resource_size_t variables
2020-01-31 10:30:38 -08:00
fadvise.c
mm: return void from various readahead functions
2020-06-02 10:59:06 -07:00
failslab.c
mm/failslab.c: by default, do not fail allocations with direct reclaim only
2019-07-12 11:05:43 -07:00
filemap.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
frame_vector.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
frontswap.c
mm/frontswap: fix some typos in frontswap.c
2020-06-04 19:06:24 -07:00
gup_benchmark.c
mm/gup_benchmark: support pin_user_pages() and related calls
2020-04-02 09:35:27 -07:00
gup.c
mm: Allow arches to provide ptep_get()
2020-06-20 22:14:53 +10:00
highmem.c
mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions
2019-12-10 10:12:55 +01:00
hmm.c
mmap locking API: add mmap_assert_locked() and mmap_assert_write_locked()
2020-06-09 09:39:14 -07:00
huge_memory.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
hugetlb_cgroup.c
mm: use fallthrough;
2020-04-07 10:43:41 -07:00
hugetlb.c
mm/hugetlb.c: fix pages per hugetlb calculation
2020-07-03 16:15:25 -07:00
hwpoison-inject.c
mm/hwpoison-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops
2019-12-01 12:59:09 -08:00
init-mm.c
mmap locking API: add MMAP_LOCK_INITIALIZER
2020-06-09 09:39:14 -07:00
internal.h
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
interval_tree.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248
2019-06-19 17:09:08 +02:00
Kconfig
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next
2020-06-07 17:25:29 -07:00
Kconfig.debug
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
khugepaged.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
kmemleak-test.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
kmemleak.c
mm/kmemleak.c: use address-of operator on section symbols
2020-04-02 09:35:26 -07:00
ksm.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
list_lru.c
mm/list_lru: fix a typo in comment "numbesr"->"numbers"
2020-06-04 19:06:24 -07:00
maccess.c
maccess: rename probe_user_{read,write} to copy_{from,to}_user_nofault
2020-06-17 10:57:41 -07:00
madvise.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
Makefile
The Kernel Concurrency Sanitizer (KCSAN)
2020-06-11 18:55:43 -07:00
mapping_dirty_helpers.c
mm/mapping_dirty_helpers: update huge page-table entry callbacks
2020-04-02 09:35:29 -07:00
memblock.c
mm/memblock: fix a typo in comment "implict"->"implicit"
2020-06-04 19:06:23 -07:00
memcontrol.c
mm/memcontrol.c: prevent missed memory.low load tears
2020-06-26 00:27:37 -07:00
memfd.c
mm: page cache: store only head pages in i_pages
2019-09-24 15:54:08 -07:00
memory_hotplug.c
mm/memory_hotplug.c: fix false softlockup during pfn range removal
2020-06-26 00:27:38 -07:00
memory-failure.c
mm/memory-failure: send SIGBUS(BUS_MCEERR_AR) only to current thread
2020-06-11 18:17:47 -07:00
memory.c
mm/memory: fix IO cost for anonymous page
2020-06-26 00:27:38 -07:00
mempolicy.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mempool.c
…
memremap.c
mm/memremap: set caching mode for PCI P2PDMA memory to WC
2020-04-10 15:36:21 -07:00
memtest.c
…
migrate.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mincore.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
mlock.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mm_init.c
mm/mm_init.c: report kasan-tag information stored in page->flags
2020-06-02 10:59:12 -07:00
mmap.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mmu_gather.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mmu_notifier.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mmzone.c
…
mprotect.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
mremap.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
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: remove vmalloc_exec
2020-06-26 00:27:38 -07:00
oom_kill.c
kernel: better document the use_mm/unuse_mm API contract
2020-06-10 19:14:18 -07:00
page_alloc.c
virtio: features, fixes
2020-06-10 13:42:09 -07:00
page_counter.c
mm, memcg: prevent memory.min load/store tearing
2020-04-02 09:35:29 -07:00
page_ext.c
mm/page_ext.c: drop pfn_present() check when onlining
2020-04-07 10:43:40 -07:00
page_idle.c
mm/page_idle.c: skip offline pages
2020-06-08 11:05:55 -07:00
page_io.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
page_isolation.c
mm: Allow to offline unmovable PageOffline() pages via MEM_GOING_OFFLINE
2020-06-04 15:36:52 -04:00
page_owner.c
mm: rename gfpflags_to_migratetype to gfp_migratetype for same convention
2020-06-03 20:09:45 -07:00
page_poison.c
mm/page_poison.c: fix a typo in a comment
2019-09-24 15:54:08 -07:00
page_reporting.c
mm/page_reporting: add budget limit on how many pages can be reported per pass
2020-04-07 10:43:39 -07:00
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: explicitly compare pfn for normal, hugetlbfs and THP page
2020-01-31 10:30:38 -08:00
page-writeback.c
mm/page-writeback: fix a typo in comment "effictive"->"effective"
2020-06-04 19:06:24 -07:00
pagewalk.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
percpu-internal.h
…
percpu-km.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu-stats.c
percpu: update copyright emails to dennis@kernel.org
2020-04-01 10:09:12 -07:00
percpu-vm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
percpu.c
mm: remove the pgprot argument to __vmalloc
2020-06-02 10:59:11 -07:00
pgtable-generic.c
mm: introduce include/linux/pgtable.h
2020-06-09 09:39:13 -07:00
process_vm_access.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
ptdump.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
readahead.c
mm: use memalloc_nofs_save in readahead path
2020-06-02 10:59:07 -07:00
rmap.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
rodata_test.c
maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault
2020-06-17 10:57:41 -07:00
shmem.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
shuffle.c
mm: adjust shuffle code to allow for future coalescing
2020-04-07 10:43:38 -07:00
shuffle.h
mm: adjust shuffle code to allow for future coalescing
2020-04-07 10:43:38 -07:00
slab_common.c
mm/slab: use memzero_explicit() in kzfree()
2020-06-26 00:27:37 -07:00
slab.c
mm/page_alloc: integrate classzone_idx and high_zoneidx
2020-06-03 20:09:44 -07:00
slab.h
mm, slab: fix sign conversion problem in memcg_uncharge_slab()
2020-06-26 00:27:37 -07:00
slob.c
mm/sl[uo]b: export __kmalloc_track(_node)_caller
2020-03-26 14:45:51 +01:00
slub.c
slub: cure list_slab_objects() from double fix
2020-06-26 00:27:37 -07:00
sparse-vmemmap.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
sparse.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -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: assign|reset cache slot by value directly
2020-04-02 09:35:27 -07:00
swap_state.c
mm: fix swap cache node allocation mask
2020-06-26 00:27:37 -07:00
swap.c
mm/swap: fix for "mm: workingset: age nonresident information alongside anonymous pages"
2020-06-26 00:27:38 -07:00
swapfile.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
truncate.c
mm/thp: allow dropping THP from page cache
2019-10-19 06:32:33 -04:00
usercopy.c
usercopy: Avoid HIGHMEM pfn warning
2019-09-17 15:20:17 -07:00
userfaultfd.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
util.c
mmap locking API: convert mmap_sem comments
2020-06-09 09:39:14 -07:00
vmacache.c
kernel: better document the use_mm/unuse_mm API contract
2020-06-10 19:14:18 -07:00
vmalloc.c
mm: remove vmalloc_exec
2020-06-26 00:27:38 -07:00
vmpressure.c
mm: vmpressure: use mem_cgroup_is_root API
2020-04-02 09:35:31 -07:00
vmscan.c
mm: workingset: age nonresident information alongside anonymous pages
2020-06-26 00:27:37 -07:00
vmstat.c
mm/vmstat.c: convert to use DEFINE_SEQ_ATTRIBUTE macro
2020-06-04 19:06:26 -07:00
workingset.c
mm: workingset: age nonresident information alongside anonymous pages
2020-06-26 00:27:37 -07:00
z3fold.c
mm/z3fold: silence kmemleak false positives of slots
2020-05-28 11:35:40 -07:00
zbud.c
mm: use false for bool variable
2020-06-04 19:06:24 -07:00
zpool.c
zpool: add malloc_support_movable to zpool_driver
2019-09-24 15:54:12 -07:00
zsmalloc.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
zswap.c
mm/zswap: allow setting default status, compressor and allocator in Kconfig
2020-04-07 10:43:41 -07:00