From: David Howells <dhowells@redhat.com>
Date: Tue, 27 Oct 2020 09:39:04 +0000 (+0000)
Subject: afs: Fix copy_file_range()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=06a17bbe1d47fec6232505c355b367797f6a635c;p=linux.git

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@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/afs/file.c b/fs/afs/file.c
index 371d1488cc549..91225421ad378 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,