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From:   Lukas Czerner <lczerner@redhat.com>
To:     linux-ext4@vger.kernel.org
Cc:     Theodore Ts'o <tytso@mit.edu>, David Howells <dhowells@redhat.com>,
        Al Viro <viro@zeniv.linux.org.uk>
Subject: [PATCH 13/17] ext4: add ext4_reconfigure for the new mount API
Date:   Wed,  6 Nov 2019 11:14:53 +0100
Message-Id: <20191106101457.11237-14-lczerner@redhat.com>
In-Reply-To: <20191106101457.11237-1-lczerner@redhat.com>
References: <20191106101457.11237-1-lczerner@redhat.com>
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Signed-off-by: Lukas Czerner <lczerner@redhat.com>
---
 fs/ext4/super.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f863fddc3df3..471fe7b6ad9e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -94,6 +94,7 @@ static int ext4_check_opt_consistency(struct fs_context *=
fc,
 static void ext4_apply_options(struct fs_context *fc, struct super_block *=
sb);
 static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *pa=
ram);
 static int ext4_get_tree(struct fs_context *fc);
+static int ext4_reconfigure(struct fs_context *fc);
=20
 /*
  * Lock ordering
@@ -126,6 +127,7 @@ static int ext4_get_tree(struct fs_context *fc);
 static const struct fs_context_operations ext4_context_ops =3D {
 =09.parse_param=09=3D ext4_parse_param,
 =09.get_tree=09=3D ext4_get_tree,
+=09.reconfigure=09=3D ext4_reconfigure,
 };
=20
 #if !defined(CONFIG_EXT2_FS) && !defined(CONFIG_EXT2_FS_MODULE) && defined=
(CONFIG_EXT4_USE_FOR_EXT2)
@@ -6113,6 +6115,25 @@ static int ext4_remount(struct super_block *sb, int =
*flags, char *data)
 =09return ret;
 }
=20
+static int ext4_reconfigure(struct fs_context *fc)
+{
+=09struct super_block *sb =3D fc->root->d_sb;
+=09int flags =3D fc->sb_flags;
+=09int ret;
+
+=09fc->s_fs_info =3D EXT4_SB(sb);
+
+=09ret =3D ext4_check_opt_consistency(fc, sb);
+=09if (ret < 0)
+=09=09return ret;
+
+=09ret =3D __ext4_remount(fc, sb, &flags);
+=09if (ret < 0)
+=09=09return ret;
+
+=09return 0;
+}
+
 #ifdef CONFIG_QUOTA
 static int ext4_statfs_project(struct super_block *sb,
 =09=09=09       kprojid_t projid, struct kstatfs *buf)
--=20
2.21.0