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| author | David Hildenbrand <david@redhat.com> | 2022-05-10 03:20:43 +0200 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-05-10 03:20:43 +0200 |
| commit | 28c5209dfd5f86f4398ce01bfac8508b2c4d4050 (patch) | |
| tree | a0d2537fd0e580243669a1b58e644a577887e457 | |
| parent | mm/rmap: remove do_page_add_anon_rmap() (diff) | |
| download | linux-28c5209dfd5f86f4398ce01bfac8508b2c4d4050.tar.xz linux-28c5209dfd5f86f4398ce01bfac8508b2c4d4050.zip | |
mm/rmap: pass rmap flags to hugepage_add_anon_rmap()
Let's prepare for passing RMAP_EXCLUSIVE, similarly as we do for
page_add_anon_rmap() now. RMAP_COMPOUND is implicit for hugetlb pages and
ignored.
Link: https://lkml.kernel.org/r/20220428083441.37290-8-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Don Dutile <ddutile@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Khalid Aziz <khalid.aziz@oracle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Liang Zhang <zhangliang5@huawei.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Nadav Amit <namit@vmware.com>
Cc: Oded Gabbay <oded.gabbay@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Pedro Demarchi Gomes <pedrodemargomes@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | include/linux/rmap.h | 2 | ||||
| -rw-r--r-- | mm/migrate.c | 3 | ||||
| -rw-r--r-- | mm/rmap.c | 9 |
3 files changed, 9 insertions, 5 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 643801a937f3..90e1e6925789 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -191,7 +191,7 @@ void page_add_file_rmap(struct page *, struct vm_area_struct *, void page_remove_rmap(struct page *, struct vm_area_struct *, bool compound); void hugepage_add_anon_rmap(struct page *, struct vm_area_struct *, - unsigned long address); + unsigned long address, rmap_t flags); void hugepage_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned long address); diff --git a/mm/migrate.c b/mm/migrate.c index 381c7e05e8d4..92e932f08be5 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -232,7 +232,8 @@ static bool remove_migration_pte(struct folio *folio, pte = pte_mkhuge(pte); pte = arch_make_huge_pte(pte, shift, vma->vm_flags); if (folio_test_anon(folio)) - hugepage_add_anon_rmap(new, vma, pvmw.address); + hugepage_add_anon_rmap(new, vma, pvmw.address, + RMAP_NONE); else page_dup_file_rmap(new, true); set_huge_pte_at(vma->vm_mm, pvmw.address, pvmw.pte, pte); diff --git a/mm/rmap.c b/mm/rmap.c index a0cbbf201c98..32630f1b1ee1 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -2391,9 +2391,11 @@ void rmap_walk_locked(struct folio *folio, const struct rmap_walk_control *rwc) * The following two functions are for anonymous (private mapped) hugepages. * Unlike common anonymous pages, anonymous hugepages have no accounting code * and no lru code, because we handle hugepages differently from common pages. + * + * RMAP_COMPOUND is ignored. */ -void hugepage_add_anon_rmap(struct page *page, - struct vm_area_struct *vma, unsigned long address) +void hugepage_add_anon_rmap(struct page *page, struct vm_area_struct *vma, + unsigned long address, rmap_t flags) { struct anon_vma *anon_vma = vma->anon_vma; int first; @@ -2403,7 +2405,8 @@ void hugepage_add_anon_rmap(struct page *page, /* address might be in next vma when migration races vma_adjust */ first = atomic_inc_and_test(compound_mapcount_ptr(page)); if (first) - __page_set_anon_rmap(page, vma, address, 0); + __page_set_anon_rmap(page, vma, address, + !!(flags & RMAP_EXCLUSIVE)); } void hugepage_add_new_anon_rmap(struct page *page, |