Hugh Dickins ed98b0159f mm/filemap: fix mapping_seek_hole_data on THP & 32-bit ... No problem on 64-bit, or without huge pages, but xfstests generic/285 and other SEEK_HOLE/SEEK_DATA tests have regressed on huge tmpfs, and on 32-bit architectures, with the new mapping_seek_hole_data(). Several different bugs turned out to need fixing. u64 cast to stop losing bits when converting unsigned long to loff_t (and let's use shifts throughout, rather than mixed with * and /). Use round_up() when advancing pos, to stop assuming that pos was already THP-aligned when advancing it by THP-size. (This use of round_up() assumes that any THP has THP-aligned index: true at present and true going forward, but could be recoded to avoid the assumption.) Use xas_set() when iterating away from a THP, so that xa_index stays in synch with start, instead of drifting away to return bogus offset. Check start against end to avoid wrapping 32-bit xa_index to 0 (and to handle these additional cases, seek_data or not, it's easier to break the loop than goto: so rearrange exit from the function). [hughd@google.com: remove unneeded u64 casts, per Matthew] Link: https://lkml.kernel.org/r/alpine.LSU.2.11.2104221347240.1170@eggly.anvils Link: https://lkml.kernel.org/r/alpine.LSU.2.11.2104211737410.3299@eggly.anvils Fixes: 41139aa4c3 ("mm/filemap: add mapping_seek_hole_data") Signed-off-by: Hugh Dickins <hughd@google.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: William Kucharski <william.kucharski@oracle.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 mapping_seek_hole_data on THP & 32-bit	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