The patch titled
Subject: mm/huge_memory: convert split_huge_pages_in_file() to use a folio
has been added to the -mm mm-unstable branch. Its filename is
mm-huge_memory-convert-split_huge_pages_in_file-to-use-a-folio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-huge_memory-convert-split_huge_pages_in_file-to-use-a-folio.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/huge_memory: convert split_huge_pages_in_file() to use a folio
Date: Wed, 19 Oct 2022 19:33:29 +0100
Patch series "Remove FGP_HEAD flag".
We have just two users left of the FGP_HEAD flag and both of them are
better off; sometimes startlingly so as a result of conversion to use
folios.
This patch (of 4):
Removes a number of calls to compound_head() and a call to
pagecache_get_page().
Link: https://lkml.kernel.org/r/20221019183332.2802139-1-willy@xxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20221019183332.2802139-2-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
--- a/mm/huge_memory.c~mm-huge_memory-convert-split_huge_pages_in_file-to-use-a-folio
+++ a/mm/huge_memory.c
@@ -3011,28 +3011,28 @@ static int split_huge_pages_in_file(cons
mapping = candidate->f_mapping;
for (index = off_start; index < off_end; index += nr_pages) {
- struct page *fpage = pagecache_get_page(mapping, index,
- FGP_ENTRY | FGP_HEAD, 0);
+ struct folio *folio = __filemap_get_folio(mapping, index,
+ FGP_ENTRY, 0);
nr_pages = 1;
- if (xa_is_value(fpage) || !fpage)
+ if (xa_is_value(folio) || !folio)
continue;
- if (!is_transparent_hugepage(fpage))
+ if (!folio_test_large(folio))
goto next;
total++;
- nr_pages = thp_nr_pages(fpage);
+ nr_pages = folio_nr_pages(folio);
- if (!trylock_page(fpage))
+ if (!folio_trylock(folio))
goto next;
- if (!split_huge_page(fpage))
+ if (!split_folio(folio))
split++;
- unlock_page(fpage);
+ folio_unlock(folio);
next:
- put_page(fpage);
+ folio_put(folio);
cond_resched();
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-huge_memory-convert-split_huge_pages_in_file-to-use-a-folio.patch
mm-swap-convert-find_get_incore_page-to-use-folios.patch
mm-convert-find_get_incore_page-to-filemap_get_incore_folio.patch
mm-remove-fgp_head.patch
