linux-kernel - [RFC PATCH] netfs: do not get the folio reference twice

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Date:   Tue,  5 Jul 2022 10:22:19 +0800
From:   xiubli@...hat.com
To:     dhowells@...hat.com
Cc:     linux-kernel@...r.kernel.org, willy@...radead.org,
        keescook@...omium.org, linux-fsdevel@...r.kernel.org,
        linux-cachefs@...hat.com, Xiubo Li <xiubli@...hat.com>
Subject: [RFC PATCH] netfs: do not get the folio reference twice

From: Xiubo Li <xiubli@...hat.com>

And also the comment said it will drop the folio references but
the code was increasing it.

Signed-off-by: Xiubo Li <xiubli@...hat.com>
---
 fs/netfs/buffered_read.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/netfs/buffered_read.c b/fs/netfs/buffered_read.c
index 5b93e22397fe..a44a5b3b8d4c 100644
--- a/fs/netfs/buffered_read.c
+++ b/fs/netfs/buffered_read.c
@@ -396,9 +396,6 @@ int netfs_write_begin(struct netfs_inode *ctx,
 	 */
 	ractl._nr_pages = folio_nr_pages(folio);
 	netfs_rreq_expand(rreq, &ractl);
-
-	/* We hold the folio locks, so we can drop the references */
-	folio_get(folio);
 	while (readahead_folio(&ractl))
 		;
 
-- 
2.36.0.rc1