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[RFC,v2,3/3] ovl: support freeze/thaw super

Message ID 1485174742-15866-4-git-send-email-amir73il@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Amir Goldstein Jan. 23, 2017, 12:32 p.m. UTC 
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 fs/overlayfs/super.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
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Patch

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 346f668..cb85eeb 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -179,6 +179,16 @@  static int ovl_sync_fs(struct super_block *sb, int wait)
 	return ret;
 }
 
+static int ovl_freeze(struct super_block *sb)
+{
+	return 0;
+}
+
+static int ovl_unfreeze(struct super_block *sb)
+{
+	return 0;
+}
+
 /**
  * ovl_statfs
  * @sb: The overlayfs super block
@@ -242,6 +252,8 @@  static int ovl_remount(struct super_block *sb, int *flags, char *data)
 static const struct super_operations ovl_super_operations = {
 	.put_super	= ovl_put_super,
 	.sync_fs	= ovl_sync_fs,
+	.freeze_fs	= ovl_freeze,
+	.unfreeze_fs	= ovl_unfreeze,
 	.statfs		= ovl_statfs,
 	.show_options	= ovl_show_options,
 	.remount_fs	= ovl_remount,