[PATCH 6/6] ceph: use folios in put_bvecs()

[Tal Zussman]

Use bvec_folio() to dirty and release the pages as folios. This adds
one call to compound_head() per page, while folio_mark_dirty_lock() and
folio_put() each drop one, for a net saving of one call per page when
dirtying.

Signed-off-by: Tal Zussman <tz2294@xxxxxxxxxxxx>
---
 fs/ceph/file.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 0b6921293f27..89233c5905c9 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -182,11 +182,15 @@ static void put_bvecs(struct bio_vec *bvecs, int num_bvecs, bool should_dirty)
 	int i;
 
 	for (i = 0; i < num_bvecs; i++) {
-		if (bvecs[i].bv_page) {
-			if (should_dirty)
-				set_page_dirty_lock(bvecs[i].bv_page);
-			put_page(bvecs[i].bv_page);
-		}
+		struct folio *folio;
+
+		if (!bvecs[i].bv_page)
+			continue;
+
+		folio = bvec_folio(&bvecs[i]);
+		if (should_dirty)
+			folio_mark_dirty_lock(folio);
+		folio_put(folio);
 	}
 	kvfree(bvecs);
 }

-- 
2.39.5