Bug 198275

Summary: zram not free allocated memory even if all files are deleted
Product: Drivers Reporter: cissu (cissusnar)
Component: OtherAssignee: drivers_other
Status: NEW ---    
Severity: normal CC: cissusnar
Priority: P1    
Hardware: Intel   
OS: Linux   
Kernel Version: 4.14.8 Subsystem:
Regression: No Bisected commit-id:

Description cissu 2017-12-26 07:14:28 UTC 
# df
/dev/zram0      4.9G   20M  4.6G   1% /var/tmp

# echo 1 >  /sys/block/zram0/compact

# zramctl
NAME       ALGORITHM DISKSIZE   DATA  COMPR  TOTAL STREAMS MOUNTPOINT
/dev/zram0 lz4             5G 785.6M 243.3M 256.3M       4 /var/tmp

# uname -a
Linux gentoo_server 4.14.8-gentoo-r1 #3 SMP Sat Dec 23 15:59:24 CST 2017 x86_64 Intel(R) Atom(TM) CPU 330 @ 1.60GHz GenuineIntel GNU/Linux


zram not free allocated memory even if all files are deleted.
compact trigger is not work, this problem make zram useless...