linux-kernel - [PATCH AUTOSEL 6.13 7/7] netfs: Fix netfs_unbuffered_read() to return ssize

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Message-Id: <20250325184215.2152123-7-sashal@kernel.org>
Date: Tue, 25 Mar 2025 14:42:15 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: David Howells <dhowells@...hat.com>,
	"Paulo Alcantara (Red Hat)" <pc@...guebit.com>,
	Jeff Layton <jlayton@...nel.org>,
	Viacheslav Dubeyko <slava@...eyko.com>,
	Alex Markuze <amarkuze@...hat.com>,
	Ilya Dryomov <idryomov@...il.com>,
	ceph-devel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	Christian Brauner <brauner@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	netfs@...ts.linux.dev
Subject: [PATCH AUTOSEL 6.13 7/7] netfs: Fix netfs_unbuffered_read() to return ssize_t rather than int

From: David Howells <dhowells@...hat.com>

[ Upstream commit 07c574eb53d4cc9aa7b985bc8bfcb302e5dc4694 ]

Fix netfs_unbuffered_read() to return an ssize_t rather than an int as
netfs_wait_for_read() returns ssize_t and this gets implicitly truncated.

Signed-off-by: David Howells <dhowells@...hat.com>
Link: https://lore.kernel.org/r/20250314164201.1993231-5-dhowells@redhat.com
Acked-by: "Paulo Alcantara (Red Hat)" <pc@...guebit.com>
cc: Jeff Layton <jlayton@...nel.org>
cc: Viacheslav Dubeyko <slava@...eyko.com>
cc: Alex Markuze <amarkuze@...hat.com>
cc: Ilya Dryomov <idryomov@...il.com>
cc: ceph-devel@...r.kernel.org
cc: linux-fsdevel@...r.kernel.org
Signed-off-by: Christian Brauner <brauner@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/netfs/direct_read.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/netfs/direct_read.c b/fs/netfs/direct_read.c
index b1a66a6e6bc2d..917b7edc34ef5 100644
--- a/fs/netfs/direct_read.c
+++ b/fs/netfs/direct_read.c
@@ -108,9 +108,9 @@ static int netfs_dispatch_unbuffered_reads(struct netfs_io_request *rreq)
  * Perform a read to an application buffer, bypassing the pagecache and the
  * local disk cache.
  */
-static int netfs_unbuffered_read(struct netfs_io_request *rreq, bool sync)
+static ssize_t netfs_unbuffered_read(struct netfs_io_request *rreq, bool sync)
 {
-	int ret;
+	ssize_t ret;
 
 	_enter("R=%x %llx-%llx",
 	       rreq->debug_id, rreq->start, rreq->start + rreq->len - 1);
@@ -149,7 +149,7 @@ static int netfs_unbuffered_read(struct netfs_io_request *rreq, bool sync)
 	}
 
 out:
-	_leave(" = %d", ret);
+	_leave(" = %zd", ret);
 	return ret;
 }
 
-- 
2.39.5