From: Yan <yanzheng@21cn.com>
Date: Tue, 22 Jan 2008 17:46:56 +0000 (-0500)
Subject: Btrfs: Add basic lockfs calls
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ed0dab6b86cee64e9072107f65fa40629f162b38;p=linux-beck.git

Btrfs: Add basic lockfs calls

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index b6982f0133cf..8b52c69fda2e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -429,6 +429,17 @@ static struct file_system_type btrfs_fs_type = {
 	.kill_sb	= kill_block_super,
 	.fs_flags	= FS_REQUIRES_DEV,
 };
+static void btrfs_write_super_lockfs(struct super_block *sb)
+{
+	struct btrfs_root *root = btrfs_sb(sb);
+	btrfs_transaction_flush_work(root);
+}
+
+static void btrfs_unlockfs(struct super_block *sb)
+{
+	struct btrfs_root *root = btrfs_sb(sb);
+	btrfs_transaction_queue_work(root, HZ * 30);
+}
 
 static struct super_operations btrfs_super_ops = {
 	.delete_inode	= btrfs_delete_inode,
@@ -442,8 +453,9 @@ static struct super_operations btrfs_super_ops = {
 	.alloc_inode	= btrfs_alloc_inode,
 	.destroy_inode	= btrfs_destroy_inode,
 	.statfs		= btrfs_statfs,
+	.write_super_lockfs = btrfs_write_super_lockfs,
+	.unlockfs	= btrfs_unlockfs,
 };
-
 static int __init init_btrfs_fs(void)
 {
 	int err;