diff options
| author | Kirill A. Shutemov <[email protected]> | 2016-07-26 15:25:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-07-26 16:19:19 -0700 |
| commit | 7751b2da6be0b59da0838a05153a646df1affbce (patch) | |
| tree | 451727d9d00902b1d91c33449832344435977453 | |
| parent | 9a73f61bdb8acdc01bbaf72a3fe0a8854f2463ad (diff) | |
vmscan: split file huge pages before paging them out
This is preparation of vmscan for file huge pages. We cannot write out
huge pages, so we need to split them on the way out.
Link: http://lkml.kernel.org/r/1466021202-61880-22-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/vmscan.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 93ba33789ac6..21d417ccff69 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1055,8 +1055,14 @@ static unsigned long shrink_page_list(struct list_head *page_list, /* Adding to swap updated mapping */ mapping = page_mapping(page); + } else if (unlikely(PageTransHuge(page))) { + /* Split file THP */ + if (split_huge_page_to_list(page, page_list)) + goto keep_locked; } + VM_BUG_ON_PAGE(PageTransHuge(page), page); + /* * The page is mapped into the page tables of one or more * processes. Try to unmap it here. |