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mm/huge_memory: convert split_huge_pages_in_file() to use a folio

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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@infradead.org
Link: https://lkml.kernel.org/r/20221019183332.2802139-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-10-19 19:33:29 +01:00 committed by Andrew Morton
parent e025ab842e
commit 9ee2c08627
1 changed files with 9 additions and 9 deletions
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18
mm/huge_memory.c
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@ -3066,28 +3066,28 @@ static int split_huge_pages_in_file(const char *file_path, pgoff_t off_start,
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();
}