Issue

• resize2fs hung while using CE_AgentDriver module

crash> bt
PID: 1548   TASK: ffff8801eb29a040  CPU: 2   COMMAND: "resize2fs"
 #0 [ffff8800a0b7f9a8] schedule at ffffffff81552d9a
 #1 [ffff8800a0b7fa90] schedule_timeout at ffffffff81553e35
 #2 [ffff8800a0b7fb40] wait_for_common at ffffffff81553a93
 #3 [ffff8800a0b7fbd0] wait_for_completion at ffffffff81553bcd
 #4 [ffff8800a0b7fbe0] blkdev_issue_zeroout at ffffffff8128a693
 #5 [ffff8800a0b7fc80] ext4_group_add at ffffffffa0241d73 [ext4]
 #6 [ffff8800a0b7fda0] ext4_ioctl at ffffffffa0229ce4 [ext4]
 #7 [ffff8800a0b7fe30] vfs_ioctl at ffffffff811b2779
 #8 [ffff8800a0b7fe70] do_vfs_ioctl at ffffffff811b2934
 #9 [ffff8800a0b7ff00] sys_ioctl at ffffffff811b2ec1
#10 [ffff8800a0b7ff50] system_call_fastpath at ffffffff8155e351
    RIP: 0000003dd2ce0b77  RSP: 00007fffffffe8a0  RFLAGS: 00010246
    RAX: 0000000000000010  RBX: 0000000000000d28  RCX: 0000000000000d6f
    RDX: 00007fffffffe8c0  RSI: 0000000040286608  RDI: 0000000000000004
    RBP: 000000000060e430   R8: 000000000000000b   R9: 0000000000000000
    R10: 0000000000000000  R11: 0000000000000246  R12: 0000000000000004
    R13: 0000000000000000  R14: 0000000000000000  R15: 00007fffffffe8c0
    ORIG_RAX: 0000000000000010  CS: 0033  SS: 002b