linux-kernel - [PATCH v12 46/54] ceph: disable copy offload on encrypted inodes

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Message-Id: <20220331153130.41287-47-jlayton@kernel.org>
Date:   Thu, 31 Mar 2022 11:31:22 -0400
From:   Jeff Layton <jlayton@...nel.org>
To:     ceph-devel@...r.kernel.org
Cc:     xiubli@...hat.com, idryomov@...il.com, lhenriques@...e.de,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v12 46/54] ceph: disable copy offload on encrypted inodes

If we have an encrypted inode, then the client will need to re-encrypt
the contents of the new object. Disable copy offload to or from
encrypted inodes.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/ceph/file.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index d8dfb8de4219..29cc65222ddd 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -2528,6 +2528,10 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
 		return -EOPNOTSUPP;
 	}
 
+	/* Every encrypted inode gets its own key, so we can't offload them */
+	if (IS_ENCRYPTED(src_inode) || IS_ENCRYPTED(dst_inode))
+		return -EOPNOTSUPP;
+
 	if (len < src_ci->i_layout.object_size)
 		return -EOPNOTSUPP; /* no remote copy will be done */
 
-- 
2.35.1