CA-161534: block_device_io: fix writing of large generation counts
CA-161534: block_device_io: fix writing of large generation counts

action_writedelta converts the (ASCII string represented) generation
count into an int to log it. This conversion fails when the generation
count reaches 2^30. This patch removes the conversion so that the string
representation is logged directly.

Signed-off-by: John Else <37b74501daa612e48fea94f9846ed4ddeb6a8f07@citrix.com>

srowe/xen-api,euanh/xen-api,jjd27/xen-api,cheng-z/xen-api,srowe/xen-api,euanh/xen-api,agimofcarmen/xen-api,koushikcgit/xen-api,vasilenkomike/xen-api,koushikcgit/xen-api,anoobs/xen-api,salvocambria/xen-api,thomassa/xen-api,Frezzle/xen-api,cheng-z/xen-api,koushikcgit/xen-api,thomassa/xen-api,anoobs/xen-api,thomassa/xen-api,rafalmiel/xen-api,robertbreker/xen-api,guard163/xen-api,cheng-z/xen-api,robertbreker/xen-api,salvocambria/xen-api,salvocambria/xen-api,rafalmiel/xen-api,cheng-z/xen-api,koushikcgit/xen-api,agimofcarmen/xen-api,salvocambria/xen-api,guard163/xen-api,euanh/xen-api,euanh/xen-api,anoobs/xen-api,jjd27/xen-api,thomassa/xen-api,djs55/xen-api,cheng--zhang/xen-api,agimofcarmen/xen-api,cheng--zhang/xen-api,jjd27/xen-api,euanh/xen-api,cheng--zhang/xen-api,agimofcarmen/xen-api,vasilenkomike/xen-api,cheng--zhang/xen-api,koushikcgit/xen-api,vasilenkomike/xen-api,Frezzle/xen-api,koushikcgit/xen-api,agimofcarmen/xen-api,srowe/xen-api,simonjbeaumont/xen-api,simonjbeaumont/xen-api,thomassa/xen-api,srowe/xen-api,robertbreker/xen-api,jjd27/xen-api,simonjbeaumont/xen-api,agimofcarmen/xen-api,cheng--zhang/xen-api,jjd27/xen-api,Frezzle/xen-api,guard163/xen-api,Frezzle/xen-api,guard163/xen-api,vasilenkomike/xen-api,anoobs/xen-api,srowe/xen-api,rafalmiel/xen-api,rafalmiel/xen-api,robertbreker/xen-api,vasilenkomike/xen-api,guard163/xen-api,djs55/xen-api,djs55/xen-api,guard163/xen-api,cheng--zhang/xen-api,anoobs/xen-api,jjd27/xen-api,euanh/xen-api,cheng-z/xen-api,robertbreker/xen-api,djs55/xen-api,cheng-z/xen-api,simonjbeaumont/xen-api,Frezzle/xen-api,simonjbeaumont/xen-api,cheng-z/xen-api,cheng--zhang/xen-api,djs55/xen-api,rafalmiel/xen-api,anoobs/xen-api,thomassa/xen-api,rafalmiel/xen-api,salvocambria/xen-api,robertbreker/xen-api,djs55/xen-api,simonjbeaumont/xen-api,vasilenkomike/xen-api,salvocambria/xen-api