linux/Documentation/vm
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