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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2019-09-23 15:34:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-24 15:54:08 -0700 |
| commit | a50b854e073cd3335bbbada8dcff83a857297dd7 (patch) | |
| tree | 2ffc3a1e603860d6c0acc00154b47080c567c9c6 /mm/rmap.c | |
| parent | 1f18b296699c83d858ca8ebb8b77dbc641d87cae (diff) | |
| download | linux-stable-a50b854e073cd3335bbbada8dcff83a857297dd7.tar.gz linux-stable-a50b854e073cd3335bbbada8dcff83a857297dd7.tar.bz2 linux-stable-a50b854e073cd3335bbbada8dcff83a857297dd7.zip | |
mm: introduce page_size()
Patch series "Make working with compound pages easier", v2.
These three patches add three helpers and convert the appropriate
places to use them.
This patch (of 3):
It's unnecessarily hard to find out the size of a potentially huge page.
Replace 'PAGE_SIZE << compound_order(page)' with page_size(page).
Link: http://lkml.kernel.org/r/20190721104612.19120-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 31352bba197d..f401732b20e8 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -898,8 +898,7 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma, */ mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE, 0, vma, vma->vm_mm, address, - min(vma->vm_end, address + - (PAGE_SIZE << compound_order(page)))); + min(vma->vm_end, address + page_size(page))); mmu_notifier_invalidate_range_start(&range); while (page_vma_mapped_walk(&pvmw)) { @@ -1372,8 +1371,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma, */ mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, address, - min(vma->vm_end, address + - (PAGE_SIZE << compound_order(page)))); + min(vma->vm_end, address + page_size(page))); if (PageHuge(page)) { /* * If sharing is possible, start and end will be adjusted |