Fix deadlock on /proc/xen/xenbus, enable CONFIG_FHANDLE needed by udevd

config-pvops

@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 3.18.7 Kernel Configuration
+# Linux/x86 3.18.9 Kernel Configuration
 #
 CONFIG_64BIT=y
 CONFIG_X86_64=y
@@ -72,7 +72,7 @@ CONFIG_SYSVIPC_SYSCTL=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_POSIX_MQUEUE_SYSCTL=y
 CONFIG_CROSS_MEMORY_ATTACH=y
-# CONFIG_FHANDLE is not set
+CONFIG_FHANDLE=y
 # CONFIG_USELIB is not set
 CONFIG_AUDIT=y
 CONFIG_HAVE_ARCH_AUDITSYSCALL=y
@@ -6324,7 +6324,7 @@ CONFIG_BTRFS_FS_POSIX_ACL=y
 # CONFIG_BTRFS_ASSERT is not set
 CONFIG_NILFS2_FS=m
 CONFIG_FS_POSIX_ACL=y
-CONFIG_EXPORTFS=m
+CONFIG_EXPORTFS=y
 CONFIG_FILE_LOCKING=y
 CONFIG_FSNOTIFY=y
 CONFIG_DNOTIFY=y

patches.xen/0001-xen-fix-deadlock-on-proc-xen-xenbus-access.patch

@@ -0,0 +1,34 @@
+From 4e3eb4f6782da3f326879622e28a5efd3a1d26bd Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
+ <marmarek@invisiblethingslab.com>
+Date: Fri, 20 Mar 2015 05:08:13 +0100
+Subject: [PATCH] xen: fix deadlock on /proc/xen/xenbus access
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+Organization: Invisible Things Lab
+Cc: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
+
+Details here:
+http://lists.xenproject.org/archives/html/xen-devel/2015-03/msg02501.html
+
+Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
+---
+ drivers/xen/xenbus/xenbus_dev_frontend.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
+index 9433e46..3d333b13 100644
+--- a/drivers/xen/xenbus/xenbus_dev_frontend.c
++++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
+@@ -535,6 +535,7 @@ static int xenbus_file_open(struct inode *inode, struct file *filp)
+ 		return -ENOENT;
+ 
+ 	nonseekable_open(inode, filp);
++	filp->f_mode &= ~FMODE_ATOMIC_POS;
+ 
+ 	u = kzalloc(sizeof(*u), GFP_KERNEL);
+ 	if (u == NULL)
+-- 
+2.1.0
+

series-pvops.conf

@@ -1,6 +1,7 @@
 patches.rpmify/makefile-after_link.patch
 
 patches.xen/0001-Revert-xen-xenbus-Avoid-synchronous-wait-on-XenBus-s.patch
+patches.xen/0001-xen-fix-deadlock-on-proc-xen-xenbus-access.patch
 
 # Additional features
 #patches.xen/pvops-0100-usb-xen-pvusb-driver.patch