Add a wrapper function for users that are not yet converted to folios.
With a distro config, this function shrinks from 213 bytes to 105 bytes
due to elimination of repeated calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
include/linux/pagemap.h | 6 +++++-
mm/filemap.c | 30 +++++++++++++++---------------
2 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 131d1aa2af61..67d3badc9fe0 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -758,7 +758,11 @@ static inline void wait_on_page_fscache(struct page *page)
int put_and_wait_on_page_locked(struct page *page, int state);
void wait_on_page_writeback(struct page *page);
-extern void end_page_writeback(struct page *page);
+void end_folio_writeback(struct folio *folio);
+static inline void end_page_writeback(struct page *page)
+{
+ return end_folio_writeback(page_folio(page));
+}
void wait_for_stable_page(struct page *page);
void page_endio(struct page *page, bool is_write, int err);
diff --git a/mm/filemap.c b/mm/filemap.c
index a54eb4641385..65008c42e47d 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1147,11 +1147,11 @@ static void wake_up_page_bit(struct page *page, int bit_nr)
spin_unlock_irqrestore(&q->lock, flags);
}
-static void wake_up_page(struct page *page, int bit)
+static void wake_up_folio(struct folio *folio, int bit)
{
- if (!PageWaiters(page))
+ if (!FolioWaiters(folio))
return;
- wake_up_page_bit(page, bit);
+ wake_up_page_bit(&folio->page, bit);
}
/*
@@ -1443,10 +1443,10 @@ void unlock_page_fscache(struct page *page)
EXPORT_SYMBOL(unlock_page_fscache);
/**
- * end_page_writeback - end writeback against a page
- * @page: the page
+ * end_folio_writeback - End writeback against a page.
+ * @folio: The page.
*/
-void end_page_writeback(struct page *page)
+void end_folio_writeback(struct folio *folio)
{
/*
* TestClearPageReclaim could be used here but it is an atomic
@@ -1455,26 +1455,26 @@ void end_page_writeback(struct page *page)
* justify taking an atomic operation penalty at the end of
* ever page writeback.
*/
- if (PageReclaim(page)) {
- ClearPageReclaim(page);
- rotate_reclaimable_page(page);
+ if (FolioReclaim(folio)) {
+ ClearFolioReclaim(folio);
+ rotate_reclaimable_page(&folio->page);
}
/*
* Writeback does not hold a page reference of its own, relying
* on truncation to wait for the clearing of PG_writeback.
* But here we must make sure that the page is not freed and
- * reused before the wake_up_page().
+ * reused before the wake_up_folio().
*/
- get_page(page);
- if (!test_clear_page_writeback(page))
+ get_folio(folio);
+ if (!test_clear_page_writeback(&folio->page))
BUG();
smp_mb__after_atomic();
- wake_up_page(page, PG_writeback);
- put_page(page);
+ wake_up_folio(folio, PG_writeback);
+ put_folio(folio);
}
-EXPORT_SYMBOL(end_page_writeback);
+EXPORT_SYMBOL(end_folio_writeback);
/*
* After completing I/O on a page, call this routine to update the page
--
2.29.2
