Btrfs: change core code of btrfs to support the device replace operations

This commit contains all the essential changes to the core code
of Btrfs for support of the device replace procedure.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 7b297354e73..bcc6b65be3b 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -30,6 +30,7 @@
 #include "tree-log.h"
 #include "inode-map.h"
 #include "volumes.h"
+#include "dev-replace.h"
 
 #define BTRFS_ROOT_TRANS_TAG 0
 
@@ -845,7 +846,9 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
                 return ret;
 
         ret = btrfs_run_dev_stats(trans, root->fs_info);
-        BUG_ON(ret);
+        WARN_ON(ret);
+        ret = btrfs_run_dev_replace(trans, root->fs_info);
+        WARN_ON(ret);
 
         ret = btrfs_run_qgroups(trans, root->fs_info);
         BUG_ON(ret);
@@ -868,6 +871,8 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
         switch_commit_root(fs_info->extent_root);
         up_write(&fs_info->extent_commit_sem);
 
+        btrfs_after_dev_replace_commit(fs_info);
+
         return 0;
 }