[Ocfs2-devel] [Patch] use asynchronous journal commit in ocfs_rename

[Ling, Xiaofeng]

Use asynchronous commit in ocfs_rename can make the speed of rename
from  95dir/s to 11834dir/s.

------------------------------------------------------------------------
---------------------
 Index: namei.c
===================================================================
--- namei.c     (revision 1312)
+++ namei.c     (working copy)
@@ -1049,6 +1049,8 @@
                goto bail;
        }

+       ocfs_handle_set_checkpoint(handle, 0);
+       ocfs_handle_set_sync(handle, 0);
        /* if old and new are the same, this'll just do one lock. */
        status = ocfs_double_lock(osb, handle,
                                  OCFS_LKM_EXMODE,
@@ -1084,6 +1086,9 @@
                LOG_ERROR_STATUS(status);
                goto finally;
        }
+
+       ocfs_handle_add_lock(handle, OCFS_LKM_EXMODE,
+                            FLAG_FILE_CREATE | FLAG_DIR, old_inode);
        got_oldlock = 1;

        if (S_ISDIR(old_inode->i_mode)) {
@@ -1157,6 +1162,8 @@
                }
                got_newlock = 1;

+               ocfs_handle_add_lock(handle, OCFS_LKM_EXMODE,
+                            FLAG_FILE_CREATE | FLAG_DIR, new_inode);
                /* if our caching is working right, then after the
                 * verify_update_inode, newfe->i_nlink ==
                 * new_inode->i_nlink */
@@ -1294,16 +1301,7 @@
        status = 0;

 bail:
-       if (got_oldlock) {
-               ocfs_release_lock(osb, OCFS_LKM_EXMODE, oldfe_flags,
-                                 old_inode);
-       }

-       if (got_newlock) {
-               ocfs_release_lock(osb, OCFS_LKM_EXMODE, newfe_flags,
-                                 new_inode);
-       }
-
        double_up_write(&OCFS_I(old_dir)->ip_io_sem,
                        &OCFS_I(new_dir)->ip_io_sem);
        up_write(&OCFS_I(old_inode)->ip_io_sem);