linux-kernel - [PATCH 01/11] afs: Fix copy_file

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Message-ID: <160389419592.300137.9529932483569358683.stgit@warthog.procyon.org.uk>
Date:   Wed, 28 Oct 2020 14:09:55 +0000
From:   David Howells <dhowells@...hat.com>
To:     linux-afs@...ts.infradead.org
Cc:     Christoph Hellwig <hch@....de>, dhowells@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 01/11] afs: Fix copy_file_range()

The prevention of splice-write without explicit ops made the
copy_file_write() syscall to an afs file (as done by the generic/112
xfstest) fail with EINVAL.

Fix by using iter_file_splice_write() for afs.

Fixes: 36e2c7421f02 ("fs: don't allow splice read/write without explicit ops")
Signed-off-by: David Howells <dhowells@...hat.com>
Reviewed-by: Christoph Hellwig <hch@....de>
---

 fs/afs/file.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/afs/file.c b/fs/afs/file.c
index 371d1488cc54..91225421ad37 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -33,6 +33,7 @@ const struct file_operations afs_file_operations = {
 	.write_iter	= afs_file_write,
 	.mmap		= afs_file_mmap,
 	.splice_read	= generic_file_splice_read,
+	.splice_write	= iter_file_splice_write,
 	.fsync		= afs_fsync,
 	.lock		= afs_lock,
 	.flock		= afs_flock,