From 177b444dce332ff839070ce2d0816da7d0e009e0 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Thu, 11 Mar 2010 11:20:17 +1100
Subject: [PATCH] --- yaml --- r: 188207 b: refs/heads/master c:
 cfbc0683af235106e7dabe92003870b82ad6f0ba h: refs/heads/master i:   188205:
 57483171dd448796491ded55ec8259fe1572292f   188203:
 87cdbe673953a24f3fe5d9ffd1cb6fded06a67f5   188199:
 85d5683a1b72d08984cfb273055f152fb7cd21d1   188191:
 0c8b789adc793875835a4d9088d3f3498f3e7162 v: v3

---
 [refs]               |  2 +-
 trunk/fs/nfs/super.c | 25 ++++++++++++++++++++-----
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/[refs] b/[refs]
index 92a6dd10b2cd..dd874a0a85fc 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bb6fbc4548b9ae7ebbd06ef72f00229df259d217
+refs/heads/master: cfbc0683af235106e7dabe92003870b82ad6f0ba
diff --git a/trunk/fs/nfs/super.c b/trunk/fs/nfs/super.c
index f1afee4eea77..6baf9a393466 100644
--- a/trunk/fs/nfs/super.c
+++ b/trunk/fs/nfs/super.c
@@ -2214,7 +2214,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
 	} else {
 		error = nfs_bdi_register(server);
 		if (error)
-			goto error_splat_super;
+			goto error_splat_bdi;
 	}
 
 	if (!s->s_root) {
@@ -2256,6 +2256,9 @@ static int nfs_get_sb(struct file_system_type *fs_type,
 error_splat_root:
 	dput(mntroot);
 error_splat_super:
+	if (server && !s->s_root)
+		bdi_unregister(&server->backing_dev_info);
+error_splat_bdi:
 	deactivate_locked_super(s);
 	goto out;
 }
@@ -2326,7 +2329,7 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
 	} else {
 		error = nfs_bdi_register(server);
 		if (error)
-			goto error_splat_super;
+			goto error_splat_bdi;
 	}
 
 	if (!s->s_root) {
@@ -2363,6 +2366,9 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
 	return error;
 
 error_splat_super:
+	if (server && !s->s_root)
+		bdi_unregister(&server->backing_dev_info);
+error_splat_bdi:
 	deactivate_locked_super(s);
 	dprintk("<-- nfs_xdev_get_sb() = %d [splat]\n", error);
 	return error;
@@ -2578,7 +2584,7 @@ static int nfs4_remote_get_sb(struct file_system_type *fs_type,
 	} else {
 		error = nfs_bdi_register(server);
 		if (error)
-			goto error_splat_super;
+			goto error_splat_bdi;
 	}
 
 	if (!s->s_root) {
@@ -2616,6 +2622,9 @@ static int nfs4_remote_get_sb(struct file_system_type *fs_type,
 error_splat_root:
 	dput(mntroot);
 error_splat_super:
+	if (server && !s->s_root)
+		bdi_unregister(&server->backing_dev_info);
+error_splat_bdi:
 	deactivate_locked_super(s);
 	goto out;
 }
@@ -2811,7 +2820,7 @@ static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags,
 	} else {
 		error = nfs_bdi_register(server);
 		if (error)
-			goto error_splat_super;
+			goto error_splat_bdi;
 	}
 
 	if (!s->s_root) {
@@ -2847,6 +2856,9 @@ static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags,
 	return error;
 
 error_splat_super:
+	if (server && !s->s_root)
+		bdi_unregister(&server->backing_dev_info);
+error_splat_bdi:
 	deactivate_locked_super(s);
 	dprintk("<-- nfs4_xdev_get_sb() = %d [splat]\n", error);
 	return error;
@@ -2893,7 +2905,7 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
 	} else {
 		error = nfs_bdi_register(server);
 		if (error)
-			goto error_splat_super;
+			goto error_splat_bdi;
 	}
 
 	if (!s->s_root) {
@@ -2929,6 +2941,9 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
 	return error;
 
 error_splat_super:
+	if (server && !s->s_root)
+		bdi_unregister(&server->backing_dev_info);
+error_splat_bdi:
 	deactivate_locked_super(s);
 	dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);
 	return error;