From: yangsheng <yangsheng>
Date: Mon, 16 Jun 2008 10:09:47 +0000 (+0000)
Subject: Branch b1_8
X-Git-Tag: v1_8_0_110~463
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=7feab735763a0cda688e5e58b40dc41bd163db3a;p=fs%2Flustre-release.git

Branch b1_8
b=15592
i=oleg, johann

Correctly handle the FS_RENAME_DOES_D_MOVE flag for Lustre.
---

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 527b800..da845ec 100644
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -621,6 +621,22 @@ AC_DEFUN([LC_FUNC_SET_FS_PWD],
 ])
 ])
 
+#
+# check for FS_RENAME_DOES_D_MOVE flag
+#
+AC_DEFUN([LC_FS_RENAME_DOES_D_MOVE],
+[AC_MSG_CHECKING([if kernel has FS_RENAME_DOES_D_MOVE flag])
+LB_LINUX_TRY_COMPILE([
+        #include <linux/fs.h>
+],[
+        int v = FS_RENAME_DOES_D_MOVE;
+],[
+        AC_MSG_RESULT([yes])
+        AC_DEFINE(HAVE_FS_RENAME_DOES_D_MOVE, 1, [kernel has FS_RENAME_DOES_D_MOVE flag])
+],[
+        AC_MSG_RESULT([no])
+])
+])
 
 #
 # LC_FUNC_MS_FLOCK_LOCK
@@ -1342,6 +1358,7 @@ AC_DEFUN([LC_PROG_LINUX],
 	  
 	  # 2.6.22
           LC_INVALIDATE_BDEV_2ARG
+          LC_FS_RENAME_DOES_D_MOVE
           # 2.6.23
           LC_UNREGISTER_BLKDEV_RETURN_INT
           LC_KERNEL_SPLICE_READ
diff --git a/lustre/include/linux/lustre_compat25.h b/lustre/include/linux/lustre_compat25.h
index 1ff8765..861d95f 100644
--- a/lustre/include/linux/lustre_compat25.h
+++ b/lustre/include/linux/lustre_compat25.h
@@ -538,5 +538,11 @@ int ll_unregister_blkdev(unsigned int dev, const char *name)
 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a))
 #endif
 
+#ifdef HAVE_FS_RENAME_DOES_D_MOVE
+#define LL_RENAME_DOES_D_MOVE	FS_RENAME_DOES_D_MOVE
+#else
+#define LL_RENAME_DOES_D_MOVE	FS_ODD_RENAME
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _COMPAT25_H */
diff --git a/lustre/llite/namei.c b/lustre/llite/namei.c
index 2a0733f..b6a344d 100644
--- a/lustre/llite/namei.c
+++ b/lustre/llite/namei.c
@@ -1311,8 +1311,16 @@ static int ll_link(struct dentry *old_dentry, struct inode *dir,
 static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
                      struct inode *new_dir, struct dentry *new_dentry)
 {
-        return ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
-                                 &new_dentry->d_name);
+        int err;
+        err = ll_rename_generic(old_dir, &old_dentry->d_name, new_dir,
+                                &new_dentry->d_name);
+        if (!err) {
+#ifndef HAVE_FS_RENAME_DOES_D_MOVE
+                if (!S_ISDIR(old_dentry->d_inode->i_mode))
+#endif
+                        d_move(old_dentry, new_dentry);
+        }
+        return err;
 }
 #endif
 
diff --git a/lustre/obdclass/obd_mount.c b/lustre/obdclass/obd_mount.c
index 663015d..ce82e45 100644
--- a/lustre/obdclass/obd_mount.c
+++ b/lustre/obdclass/obd_mount.c
@@ -2014,7 +2014,8 @@ struct file_system_type lustre_fs_type = {
         .name         = "lustre",
         .get_sb       = lustre_get_sb,
         .kill_sb      = lustre_kill_super,
-        .fs_flags     = FS_BINARY_MOUNTDATA | FS_REQUIRES_DEV,
+        .fs_flags     = FS_BINARY_MOUNTDATA | FS_REQUIRES_DEV |
+                        LL_RENAME_DOES_D_MOVE,
 };
 
 #else