Description of problem:
gvfs-udisks2-volume-monitor eat many memory when modprobe or rmmod zram.


Version-Release number of selected component (if applicable):
gvfs-1.34.0-1.fc27.src.rpm

How reproducible:

#!/bin/sh
for((i=0;i<1000;i++))
{
modprobe zram num_devices=9
sleep 0.2
rmmod zram
}


Steps to Reproduce:
1.watch -n -0.1 "ps aux|grep udisk"
2.Execute the following script：
#!/bin/sh
for((i=0;i<1000;i++))
{
modprobe zram num_devices=9
sleep 0.2
rmmod zram
}

Actual results:
the memory of gvfs-udisks2-volume-monitor goes up.


Expected results:
the memory of gvfs-udisks2-volume-monitor will not change.