kernel: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from reorder of WRITE -lqueued blkcgrstatflush can be run anytime, especially when blkcgroupbiostart is being executed. If WRITE of -lqueued is re-ordered with READ of 'bisc-lnode.next' in the loop...

kernel: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from reorder of WRITE -lqueued blkcgrstatflush can be run anytime, especially when blkcgroupbiostart is being executed. If WRITE of -lqueued is re-ordered with READ of 'bisc-lnode.next' in the loop...