diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2023-11-18 05:32:28 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-12 21:57:05 +0300 |
| commit | 1486fb50136f4799946f5ecfe050094574647153 (patch) | |
| tree | 904490f5dabda092285502c41c5710d3c7541d21 /include/linux/ksm.h | |
| parent | 6140edeea8bf30bf94c23b18c39448b43f528f46 (diff) | |
| download | linux-1486fb50136f4799946f5ecfe050094574647153.tar.xz | |
mm: ksm: use more folio api in ksm_might_need_to_copy()
Patch series "mm: cleanup and use more folio in page fault", v3.
Rename page_copy_prealloc() to folio_prealloc(), which is used by more
functions, also do more folio conversion in page fault.
This patch (of 5):
Since ksm only support normal page, no swapout/in for ksm large folio too,
add large folio check in ksm_might_need_to_copy(), also convert
page->index to folio->index as page->index is going away.
Then convert ksm_might_need_to_copy() to use more folio api to save nine
compound_head() calls, short 'address' to reduce max-line-length.
Link: https://lkml.kernel.org/r/20231118023232.1409103-1-wangkefeng.wang@huawei.com
Link: https://lkml.kernel.org/r/20231118023232.1409103-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/ksm.h')
| -rw-r--r-- | include/linux/ksm.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/ksm.h b/include/linux/ksm.h index c2dd786a30e1..4643d5244e77 100644 --- a/include/linux/ksm.h +++ b/include/linux/ksm.h @@ -77,7 +77,7 @@ static inline void ksm_exit(struct mm_struct *mm) * but what if the vma was unmerged while the page was swapped out? */ struct page *ksm_might_need_to_copy(struct page *page, - struct vm_area_struct *vma, unsigned long address); + struct vm_area_struct *vma, unsigned long addr); void rmap_walk_ksm(struct folio *folio, struct rmap_walk_control *rwc); void folio_migrate_ksm(struct folio *newfolio, struct folio *folio); @@ -130,7 +130,7 @@ static inline int ksm_madvise(struct vm_area_struct *vma, unsigned long start, } static inline struct page *ksm_might_need_to_copy(struct page *page, - struct vm_area_struct *vma, unsigned long address) + struct vm_area_struct *vma, unsigned long addr) { return page; } |