linux-kernel - [PATCH 02/13] mm: Add __folio_batch

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Date:   Wed, 21 Jun 2023 17:45:46 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org, linux-afs@...ts.infradead.org,
        linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH 02/13] mm: Add __folio_batch_release()

This performs the same role as __pagevec_release(), ie skipping the
check for batch length of 0.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 include/linux/pagevec.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h
index f582f7213ea5..42aad53e382e 100644
--- a/include/linux/pagevec.h
+++ b/include/linux/pagevec.h
@@ -127,9 +127,15 @@ static inline unsigned folio_batch_add(struct folio_batch *fbatch,
 	return fbatch_space(fbatch);
 }
 
+static inline void __folio_batch_release(struct folio_batch *fbatch)
+{
+	__pagevec_release((struct pagevec *)fbatch);
+}
+
 static inline void folio_batch_release(struct folio_batch *fbatch)
 {
-	pagevec_release((struct pagevec *)fbatch);
+	if (folio_batch_count(fbatch))
+		__folio_batch_release(fbatch);
 }
 
 void folio_batch_remove_exceptionals(struct folio_batch *fbatch);
-- 
2.39.2