Alistair Popple ab09243aa9 mm/migrate.c: remove MIGRATE_PFN_LOCKED ...

MIGRATE_PFN_LOCKED is used to indicate to migrate_vma_prepare() that a
source page was already locked during migrate_vma_collect().  If it
wasn't then the a second attempt is made to lock the page.  However if
the first attempt failed it's unlikely a second attempt will succeed,
and the retry adds complexity.  So clean this up by removing the retry
and MIGRATE_PFN_LOCKED flag.

Destination pages are also meant to have the MIGRATE_PFN_LOCKED flag
set, but nothing actually checks that.

Link: https://lkml.kernel.org/r/20211025041608.289017-1-apopple@nvidia.com
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2021-11-11 09:34:35 -08:00

..

damon

Docs/DAMON: document physical memory monitoring support

2021-11-06 13:30:45 -07:00

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

active_mm.rst

docs/vm: fix 'mm_count' vs 'mm_users' counter confusion

2020-10-13 18:38:32 -07:00

arch_pgtable_helpers.rst

mm/debug_vm_pgtable/basic: add validation for dirtiness after write protect

2021-02-24 13:38:27 -08:00

balance.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

cleancache.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

free_page_reporting.rst

mm/page_reporting: add free page reporting documentation

2020-04-07 10:43:39 -07:00

frontswap.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

highmem.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

hmm.rst

mm/migrate.c: remove MIGRATE_PFN_LOCKED

2021-11-11 09:34:35 -08:00

hugetlbfs_reserv.rst

docs/vm: Minor editorial changes in the THP and hugetlbfs

2019-04-30 06:34:40 -06:00

hwpoison.rst

doc: hwpoison: correct the support for hugepage

2021-09-03 09:58:15 -07:00

index.rst

Documentation/vm: move user guides to admin-guide/mm/

2021-11-06 13:30:44 -07:00

ksm.rst

docs: get rid of :c:type explicit declarations for structs

2020-10-15 07:49:40 +02:00

memory-model.rst

docs: remove description of DISCONTIGMEM

2021-06-29 10:53:55 -07:00

mmu_notifier.rst

docs/vm: trivial fixes to several spelling mistakes

2020-10-22 16:11:04 -06:00

numa.rst

docs: cgroup-v1: add it to the admin-guide book

2019-07-15 11:03:02 -03:00

overcommit-accounting.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

page_frags.rst

docs: vm: page_frags.rst: Fix the reference of stale function

2020-05-15 11:34:55 -06:00

page_migration.rst

Doc: page_migration: fix numbering for non-LRU movable flags

2021-09-14 14:54:01 -06:00

page_owner.rst

tools/vm/page_owner_sort.c: count and sort by mem

2021-11-06 13:30:40 -07:00

remap_file_pages.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

slub.rst

mm/slub: clarify verification reporting

2021-06-16 09:24:42 -07:00

split_page_table_lock.rst

Documentation: fix typos in split page table lock description

2021-01-18 13:27:18 -07:00

transhuge.rst

mm: gup: remove FOLL_SPLIT

2021-04-30 11:20:37 -07:00

unevictable-lru.rst

mm/rmap: split try_to_munlock from try_to_unmap

2021-07-01 11:06:03 -07:00

z3fold.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00

zsmalloc.rst

docs/vm: rename documentation files to .rst

2018-04-16 14:18:15 -06:00