From: Jeff Layton <jlayton@kernel.org>
Date: Thu, 25 Aug 2022 09:31:19 -0400
Subject: ceph: don't use special DIO path for encrypted inodes
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Git-commit: 8cff8f5374c7974ab9b9726c5b7c50f10466047e
Patch-mainline: v6.6-rc1
References: jsc#SES-1880

Eventually I want to merge the synchronous and direct read codepaths,
possibly via new netfs infrastructure. For now, the direct path is not
crypto-enabled, so use the sync read/write paths instead.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-and-tested-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Milind Changire <mchangir@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Luis Henriques <lhenriques@suse.de>

---
 fs/ceph/file.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 24ee84f257fb..f4c3da5b38fe 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1738,7 +1738,9 @@ static ssize_t ceph_read_iter(struct kiocb *iocb, struct iov_iter *to)
 		     ceph_cap_string(got));
 
 		if (!ceph_has_inline_data(ci)) {
-			if (!retry_op && (iocb->ki_flags & IOCB_DIRECT)) {
+			if (!retry_op &&
+			    (iocb->ki_flags & IOCB_DIRECT) &&
+			    !IS_ENCRYPTED(inode)) {
 				ret = ceph_direct_read_write(iocb, to,
 							     NULL, NULL);
 				if (ret >= 0 && ret < len)
@@ -2024,7 +2026,7 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from)
 
 		/* we might need to revert back to that point */
 		data = *from;
-		if (iocb->ki_flags & IOCB_DIRECT)
+		if ((iocb->ki_flags & IOCB_DIRECT) && !IS_ENCRYPTED(inode))
 			written = ceph_direct_read_write(iocb, &data, snapc,
 							 &prealloc_cf);
 		else