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Jason Gunthorpe 846babe85e mm/hmm: do not unconditionally set pfns when returning EBUSY 
In hmm_vma_handle_pte() and hmm_vma_walk_hugetlb_entry() if fault happens
then -EBUSY will be returned and the pfns input flags will have been
destroyed.

For hmm_vma_handle_pte() set HMM_PFN_NONE only on the success returns that
don't otherwise store to pfns.

For hmm_vma_walk_hugetlb_entry() all exit paths already set pfns, so
remove the redundant store.

Fixes: 2aee09d8c116 ("mm/hmm: change hmm_vma_fault() to allow write fault on page basis")
Link: https://lore.kernel.org/r/20200327200021.29372-8-jgg@ziepe.ca
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-03-30 16:58:36 -03:00
..
kasan
RISC-V Patches for the 5.6 Merge Window, Part 1
2020-01-31 11:23:29 -08:00
backing-dev.c
memcg: fix a crash in wb_workfn when a device disappears
2020-01-31 10:30:36 -08:00
balloon_compaction.c
mm/balloon_compaction: suppress allocation warnings
2019-09-04 07:42:01 -04:00
cleancache.c
…
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.c: switch to bitmap_zalloc() for cma bitmap allocation
2019-12-01 12:59:09 -08:00
cma.h
…
compaction.c
mm, compaction: fix wrong pfn handling in __reset_isolation_pfn()
2019-10-14 15:04:01 -07:00
debug_page_ref.c
…
debug.c
mm/hotplug: silence a lockdep splat with printk()
2020-01-31 10:30:39 -08:00
dmapool.c
…
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
fs: Export generic_fadvise()
2019-08-30 22:43:58 -07:00
failslab.c
…
filemap.c
mm/filemap.c: clean up filemap_write_and_wait()
2020-01-31 10:30:37 -08:00
frame_vector.c
mm: untag user pointers in get_vaddr_frames
2019-09-25 17:51:41 -07:00
frontswap.c
…
gup_benchmark.c
mm/gup_benchmark: use proper FOLL_WRITE flags instead of hard-coding "1"
2020-01-31 10:30:38 -08:00
gup.c
asm-generic/tlb: rename HAVE_RCU_TABLE_FREE
2020-02-04 03:05:26 +00:00
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
mm/hmm: do not unconditionally set pfns when returning EBUSY
2020-03-30 16:58:36 -03:00
huge_memory.c
Merge branch 'akpm' (patches from Andrew)
2020-01-31 12:16:36 -08:00
hugetlb_cgroup.c
mm: hugetlb controller for cgroups v2
2019-12-16 12:41:40 -08:00
hugetlb.c
mm/hugetlb: defer freeing of huge pages if in non-task context
2020-01-04 13:55:09 -08:00
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
mm/init-mm.c: include <linux/mman.h> for vm_committed_as_batch
2019-10-19 06:32:32 -04:00
internal.h
mm, pcpu: make zone pcp updates and reset internal to the mm
2019-12-01 12:59:06 -08:00
interval_tree.c
…
Kconfig
mm/Kconfig: fix trivial help text punctuation
2019-12-01 12:59:10 -08:00
Kconfig.debug
mm: add generic ptdump
2020-02-04 03:05:25 +00:00
khugepaged.c
mm/thp: flush file for !is_shmem PageDirty() case in collapse_file()
2019-12-01 12:59:09 -08:00
kmemleak-test.c
…
kmemleak.c
mm/kmemleak: turn kmemleak_lock and object->lock to raw_spinlock_t
2020-01-31 10:30:36 -08:00
ksm.c
* PPC secure guest support
2019-12-04 11:08:30 -08:00
list_lru.c
…
maccess.c
uaccess: Add strict non-pagefault kernel-space read function
2019-11-02 12:39:12 -07:00
madvise.c
mm: make do_madvise() available internally
2020-01-20 17:04:02 -07:00
Makefile
mm: add generic ptdump
2020-02-04 03:05:25 +00:00
mapping_dirty_helpers.c
mm: Add write-protect and clean utilities for address space ranges
2019-11-06 13:03:36 +01:00
memblock.c
memblock: Use __func__ in remaining memblock_dbg() call sites
2020-01-31 10:30:38 -08:00
memcontrol.c
mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps()
2020-02-21 11:22:15 -08:00
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: drop valid_start/valid_end from test_pages_in_a_zone()
2020-02-04 03:05:23 +00:00
memory-failure.c
mm/memory-failure.c: use page_shift() in add_to_kill()
2019-12-01 12:59:04 -08:00
memory.c
drm ttm/mm changes for 5.6-rc1
2020-02-04 07:21:04 +00:00
mempolicy.c
mm/mempolicy.c: fix out of bounds write in mpol_parse_str()
2020-01-31 10:30:36 -08:00
mempool.c
…
memremap.c
memremap: add an owner field to struct dev_pagemap
2020-03-26 14:33:37 -03:00
memtest.c
…
migrate.c
mm: handle multiple owners of device private pages in migrate_vma
2020-03-26 14:33:38 -03:00
mincore.c
mm: pagewalk: add 'depth' parameter to pte_hole
2020-02-04 03:05:25 +00:00
mlock.c
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
mm_init.c
…
mmap.c
mm: Avoid creating virtual address aliases in brk()/mmap()/mremap()
2020-02-20 10:03:14 +00:00
mmu_context.c
…
mmu_gather.c
asm-generic/tlb: provide MMU_GATHER_TABLE_FREE
2020-02-04 03:05:26 +00:00
mmu_notifier.c
mm/mmu_notifiers: Use 'interval_sub' as the variable for mmu_interval_notifier
2020-01-14 11:54:47 -04:00
mmzone.c
…
mprotect.c
autonuma: reduce cache footprint when scanning page tables
2019-12-01 12:59:09 -08:00
mremap.c
mm: Avoid creating virtual address aliases in brk()/mmap()/mremap()
2020-02-20 10:03:14 +00:00
msync.c
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
nommu.c
mm/mmap.c: rb_parent is not necessary in __vma_link_list()
2019-12-01 06:29:19 -08:00
oom_kill.c
mm, oom: dump stack of victim when reaping failed
2020-01-31 10:30:38 -08:00
page_alloc.c
mm/memmap_init: update variable name in memmap_init_zone
2020-02-04 03:05:23 +00:00
page_counter.c
…
page_ext.c
mm, page_owner: fix off-by-one error in __set_page_owner_handle()
2019-10-14 15:04:00 -07:00
page_idle.c
…
page_io.c
fs: Enable bmap() function to properly return errors
2020-02-03 08:05:37 -05:00
page_isolation.c
mm/page_isolation: fix potential warning from user
2020-01-31 10:30:39 -08:00
page_owner.c
mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo
2019-10-19 06:32:31 -04:00
page_poison.c
mm/page_poison.c: fix a typo in a comment
2019-09-24 15:54:08 -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.c: improve arithmetic divisions
2020-01-13 18:19:02 -08:00
pagewalk.c
x86: mm: avoid allocating struct mm_struct on the stack
2020-02-04 03:05:25 +00:00
percpu-internal.h
…
percpu-km.c
…
percpu-stats.c
…
percpu-vm.c
…
percpu.c
bitmap: genericize percpu bitmap region iterators
2020-01-20 16:40:56 +01:00
pgtable-generic.c
asm-generic/mm: stub out p{4,u}d_clear_bad() if __PAGETABLE_P{4,U}D_FOLDED
2019-12-01 06:29:19 -08:00
process_vm_access.c
mm, tree-wide: rename put_user_page*() to unpin_user_page*()
2020-01-31 10:30:38 -08:00
ptdump.c
x86: mm: avoid allocating struct mm_struct on the stack
2020-02-04 03:05:25 +00:00
readahead.c
…
rmap.c
mm, thp: do not queue fully unmapped pages for deferred split
2019-12-01 12:59:09 -08:00
rodata_test.c
…
shmem.c
tmpfs: switch to use of invalfc()
2020-02-07 14:48:44 -05:00
shuffle.c
mm: fix -Wmissing-prototypes warnings
2019-10-07 15:47:19 -07:00
shuffle.h
…
slab_common.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
slab.c
mm, debug_pagealloc: don't rely on static keys too early
2020-01-13 18:19:02 -08:00
slab.h
mm: clean up and clarify lruvec lookup procedure
2019-12-01 12:59:06 -08:00
slob.c
mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two)
2019-10-07 15:47:20 -07:00
slub.c
mm/slub.c: avoid slub allocation while holding list_lock
2020-01-31 10:30:36 -08:00
sparse-vmemmap.c
mm/sparsemem: convert kmalloc_section_memmap() to populate_section_memmap()
2019-07-18 17:08:07 -07:00
sparse.c
mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM
2020-02-21 11:22:15 -08:00
swap_cgroup.c
…
swap_slots.c
…
swap_state.c
mm: page cache: store only head pages in i_pages
2019-09-24 15:54:08 -07:00
swap.c
mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages
2020-01-31 10:30:37 -08:00
swapfile.c
mm/swapfile.c: fix a comment in sys_swapon()
2020-02-21 11:22:15 -08:00
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
mm: fix typos in comments when calling __SetPageUptodate()
2019-12-01 12:59:10 -08:00
util.c
mm/mmap.c: rb_parent is not necessary in __vma_link_list()
2019-12-01 06:29:19 -08:00
vmacache.c
…
vmalloc.c
Linux 5.5-rc7
2020-01-20 08:05:16 +01:00
vmpressure.c
mm/vmpressure.c: fix a signedness bug in vmpressure_register_event()
2019-10-07 15:47:19 -07:00
vmscan.c
mm/vmscan.c: don't round up scan size for online memory cgroup
2020-02-21 11:22:15 -08:00
vmstat.c
mm/memcontrol: use vmstat names for printing statistics
2019-12-04 19:44:11 -08:00
workingset.c
mm: vmscan: detect file thrashing at the reclaim root
2019-12-01 12:59:07 -08:00
z3fold.c
mm/z3fold.c: add inter-page compaction
2019-12-01 12:59:07 -08:00
zbud.c
…
zpool.c
zpool: add malloc_support_movable to zpool_driver
2019-09-24 15:54:12 -07:00
zsmalloc.c
mm/zsmalloc.c: fix the migrated zspage statistics.
2020-01-04 13:55:09 -08:00
zswap.c
zswap: potential NULL dereference on error in init_zswap()
2020-01-31 10:30:39 -08:00