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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-01-11 17:29:13 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-03 09:33:00 +0300 |
| commit | f158ed6195ef949060811fd85086928470651944 (patch) | |
| tree | 46ce5a8ac80dc4c81a5dfad2ae06a600c53b5be0 /Documentation/mm | |
| parent | f8baa6be0368b5d21be34e8bf071b563b0f77584 (diff) | |
| download | linux-f158ed6195ef949060811fd85086928470651944.tar.xz | |
mm: convert deferred_split_huge_page() to deferred_split_folio()
Now that both callers use a folio, pass the folio in and save a call to
compound_head().
Link: https://lkml.kernel.org/r/20230111142915.1001531-28-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/mm')
| -rw-r--r-- | Documentation/mm/transhuge.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/mm/transhuge.rst b/Documentation/mm/transhuge.rst index 03bbd0a19041..a9608fe51649 100644 --- a/Documentation/mm/transhuge.rst +++ b/Documentation/mm/transhuge.rst @@ -153,8 +153,8 @@ clear where references should go after split: it will stay on the head page. Note that split_huge_pmd() doesn't have any limitations on refcounting: pmd can be split at any point and never fails. -Partial unmap and deferred_split_huge_page() -============================================ +Partial unmap and deferred_split_folio() +======================================== Unmapping part of THP (with munmap() or other way) is not going to free memory immediately. Instead, we detect that a subpage of THP is not in use @@ -166,6 +166,6 @@ the place where we can detect partial unmap. It also might be counterproductive since in many cases partial unmap happens during exit(2) if a THP crosses a VMA boundary. -The function deferred_split_huge_page() is used to queue a page for splitting. +The function deferred_split_folio() is used to queue a folio for splitting. The splitting itself will happen when we get memory pressure via shrinker interface. |