linux-stable/Documentation/vm
Jason Gunthorpe 6bfef2f919 mm/hmm: remove HMM_FAULT_SNAPSHOT
Now that flags are handled on a fine-grained per-page basis this global
flag is redundant and has a confusing overlap with the pfn_flags_mask and
default_flags.

Normalize the HMM_FAULT_SNAPSHOT behavior into one place. Callers needing
the SNAPSHOT behavior should set a pfn_flags_mask and default_flags that
always results in a cleared HMM_PFN_VALID. Then no pages will be faulted,
and HMM_FAULT_SNAPSHOT is not a special flow that overrides the masking
mechanism.

As this is the last flag, also remove the flags argument. If future flags
are needed they can be part of the struct hmm_range function arguments.

Link: https://lore.kernel.org/r/20200327200021.29372-5-jgg@ziepe.ca
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-03-27 20:19:24 -03:00
..
.gitignore
active_mm.rst
balance.rst
cleancache.rst
frontswap.rst
highmem.rst
hmm.rst mm/hmm: remove HMM_FAULT_SNAPSHOT 2020-03-27 20:19:24 -03:00
hugetlbfs_reserv.rst docs/vm: Minor editorial changes in the THP and hugetlbfs 2019-04-30 06:34:40 -06:00
hwpoison.rst docs/vm: hwpoison.rst: Fix quote formatting 2019-06-20 14:11:32 -06:00
index.rst docs/vm: add documentation of memory models 2019-04-30 06:30:01 -06:00
ksm.rst
memory-model.rst mm: document ZONE_DEVICE memory-model implications 2019-07-18 17:08:07 -07:00
mmu_notifier.rst
numa.rst docs: cgroup-v1: add it to the admin-guide book 2019-07-15 11:03:02 -03:00
overcommit-accounting.rst
page_frags.rst
page_migration.rst docs: cgroup-v1: add it to the admin-guide book 2019-07-15 11:03:02 -03:00
page_owner.rst
remap_file_pages.rst
slub.rst docs: Add missing colon 2019-02-01 16:03:45 -07:00
split_page_table_lock.rst mm: treewide: clarify pgtable_page_{ctor,dtor}() naming 2019-09-26 10:10:44 -07:00
swap_numa.rst
transhuge.rst docs/vm: Minor editorial changes in the THP and hugetlbfs 2019-04-30 06:34:40 -06:00
unevictable-lru.rst docs: cgroup-v1: add it to the admin-guide book 2019-07-15 11:03:02 -03:00
z3fold.rst
zsmalloc.rst
zswap.rst mm/zswap.c: add allocation hysteresis if pool limit is hit 2020-01-31 10:30:39 -08:00