nfs: fix broken handling of the softreval mount option

[ Upstream commit 085d16d5f949b64713d5e960d6c9bbf51bc1d511 ]

Turns out that ever since this mount option was added, passing
`softreval` in NFS mount options cancelled all other flags while not
affecting the underlying flag `NFS_MOUNT_SOFTREVAL`.

Fixes: c74dfe97c104 ("NFS: Add mount option 'softreval'")
Signed-off-by: Dan Aloni <dan.aloni@vastdata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c
index 0d444a9..fb3cad3 100644 (file)
--- a/fs/nfs/fs_context.c
+++ b/fs/nfs/fs_context.c
@@ -514,7 +514,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
                if (result.negated)
                        ctx->flags &= ~NFS_MOUNT_SOFTREVAL;
                else
-                       ctx->flags &= NFS_MOUNT_SOFTREVAL;
+                       ctx->flags |= NFS_MOUNT_SOFTREVAL;
                break;
        case Opt_posix:
                if (result.negated)