Btrfs: make the cleaner complete early when the fs is going to be umounted
Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7a54b8e..06f2c01 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1674,12 +1674,14 @@
}
/*
- * If we remount the fs to be R/O, the cleaner needn't do anything except
- * sleeping. This function is used to check the status of the fs.
+ * If we remount the fs to be R/O or umount the fs, the cleaner needn't do
+ * anything except sleeping. This function is used to check the status of
+ * the fs.
*/
static inline int need_cleaner_sleep(struct btrfs_root *root)
{
- return root->fs_info->sb->s_flags & MS_RDONLY;
+ return (root->fs_info->sb->s_flags & MS_RDONLY ||
+ btrfs_fs_closing(root->fs_info));
}
static int cleaner_kthread(void *arg)
@@ -1702,8 +1704,8 @@
mutex_unlock(&root->fs_info->cleaner_mutex);
/*
- * The defragger has dealt with the R/O remount, needn't
- * do anything special here.
+ * The defragger has dealt with the R/O remount and umount,
+ * needn't do anything special here.
*/
btrfs_run_defrag_inodes(root->fs_info);
sleep: