qemu: Use proper agent entering function when freezing filesystems
qemu: Use proper agent entering function when freezing filesystems

When doing snapshots, the filesystem freeze function used the agent
entering function that expects the qemud_driver unlocked. This might
cause a deadlock of the qemu driver if the agent does not respond.

The only call path of this function has the qemud_driver locked, so this
patch changes the entering functions to those expecting the driver
locked.

novel/fbsd-libvirt,siboulet/libvirt-openvz,jardasgit/libvirt,jeckersb/libvirt,cbosdo/libvirt,emaste/libvirt,jeckersb/libvirt,zippy2/libvirt,shugaoye/libvirt,olafhering/libvirt,VenkatDatta/libvirt,agx/libvirt,novel/fbsd-libvirt,zhlcindy/libvirt-1.1.4-maintain,nertpinx/libvirt,bjzhang/libvirt,trainstack/libvirt,rlaager/libvirt,datto/libvirt,warewolf/libvirt,jfehlig/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,trainstack/libvirt,jardasgit/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,olafhering/libvirt,rlaager/libvirt,iam-TJ/libvirt,trainstack/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,shugaoye/libvirt,nertpinx/libvirt,jardasgit/libvirt,andreabolognani/libvirt,olafhering/libvirt,emaste/libvirt,novel/fbsd-libvirt,crobinso/libvirt,libvirt/libvirt,libvirt/libvirt,elmarco/libvirt,taget/libvirt,taget/libvirt,siboulet/libvirt-openvz,elmarco/libvirt,warewolf/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,novel/fbsd-libvirt,cbosdo/libvirt,iam-TJ/libvirt,cbosdo/libvirt,jfehlig/libvirt,jeckersb/libvirt,emaste/libvirt,shugaoye/libvirt,jardasgit/libvirt,trainstack/libvirt,fabianfreyer/libvirt,taget/libvirt,novel/fbsd-libvirt,agx/libvirt,novel/fbsd-libvirt,emaste/libvirt,agx/libvirt,emaste/libvirt,warewolf/libvirt,taget/libvirt,warewolf/libvirt,trainstack/libvirt,rlaager/libvirt,libvirt/libvirt,novel/fbsd-libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,zippy2/libvirt,elmarco/libvirt,shugaoye/libvirt,bjzhang/libvirt,trainstack/libvirt,warewolf/libvirt,nertpinx/libvirt,jfehlig/libvirt,bjzhang/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,eskultety/libvirt,bjzhang/libvirt,elmarco/libvirt,fabianfreyer/libvirt,datto/libvirt,agx/libvirt,VenkatDatta/libvirt,jeckersb/libvirt,agx/libvirt,iam-TJ/libvirt,VenkatDatta/libvirt,datto/libvirt,jfehlig/libvirt,jeckersb/libvirt,eskultety/libvirt,iam-TJ/libvirt,zippy2/libvirt,emaste/libvirt,zippy2/libvirt,taget/libvirt,novel/fbsd-libvirt,bjzhang/libvirt,andreabolognani/libvirt,rlaager/libvirt,datto/libvirt,jeckersb/libvirt,warewolf/libvirt,eskultety/libvirt,crobinso/libvirt,crobinso/libvirt,warewolf/libvirt,iam-TJ/libvirt,zhlcindy/libvirt-1.1.4-maintain,fabianfreyer/libvirt,siboulet/libvirt-openvz,trainstack/libvirt,libvirt/libvirt,olafhering/libvirt,elmarco/libvirt,cbosdo/libvirt,crobinso/libvirt,andreabolognani/libvirt,jardasgit/libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,cbosdo/libvirt,siboulet/libvirt-openvz,shugaoye/libvirt,datto/libvirt,andreabolognani/libvirt,emaste/libvirt,rlaager/libvirt,novel/fbsd-libvirt,jeckersb/libvirt