diff options
| author | ZhangPeng <zhangpeng362@huawei.com> | 2023-07-01 11:28:52 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 10:12:01 -0700 |
| commit | 15b4919a1e0703b77dd7cc0a4d9732f7f6181236 (patch) | |
| tree | bb15050a3d482b2bb03272338f8cbe98a8d28054 /mm/memory.c | |
| parent | c70699e555537b611f4cb426c26f8ab4a264a8a0 (diff) | |
| download | linux-15b4919a1e0703b77dd7cc0a4d9732f7f6181236.tar.gz | |
mm: use a folio in fault_dirty_shared_page()
We can replace four implicit calls to compound_head() with one by using
folio.
Link: https://lkml.kernel.org/r/20230701032853.258697-2-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/memory.c b/mm/memory.c index 33f0f28c7ebc6..e9f9944c7370c 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2965,20 +2965,20 @@ static vm_fault_t fault_dirty_shared_page(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struct address_space *mapping; - struct page *page = vmf->page; + struct folio *folio = page_folio(vmf->page); bool dirtied; bool page_mkwrite = vma->vm_ops && vma->vm_ops->page_mkwrite; - dirtied = set_page_dirty(page); - VM_BUG_ON_PAGE(PageAnon(page), page); + dirtied = folio_mark_dirty(folio); + VM_BUG_ON_FOLIO(folio_test_anon(folio), folio); /* - * Take a local copy of the address_space - page.mapping may be zeroed - * by truncate after unlock_page(). The address_space itself remains - * pinned by vma->vm_file's reference. We rely on unlock_page()'s + * Take a local copy of the address_space - folio.mapping may be zeroed + * by truncate after folio_unlock(). The address_space itself remains + * pinned by vma->vm_file's reference. We rely on folio_unlock()'s * release semantics to prevent the compiler from undoing this copying. */ - mapping = page_rmapping(page); - unlock_page(page); + mapping = folio_raw_mapping(folio); + folio_unlock(folio); if (!page_mkwrite) file_update_time(vma->vm_file); |