Hi, Christian Brauner, Jan Kara and other contributors of this patchset. I did experiments on my laptop, and these experiments show that this patchset does not solve various longstanding problems related to suspend and filesystems. (Even if I enable /sys/power/freeze_filesystems ) Now let me describe problems I had in the past (and still have!) and then experiments I did and their results. So, I had these 3 problems: - Suspend doesn't work if fstrim in progress (note that I use btrfs as root file system) - Suspend doesn't work if scrub in progress - Suspend doesn't work if we try to read from fuse-sshfs filesystem while network is down Let me describe third problem in more detail. To reproduce you need to do this: - Mount remote filesystem using sshfs (it is based on ssh and fuse) - Disable internet - Run command "ls" in that sshfs filesystem (this command will, of course, hang, because network is down) - Then suspend Suspend will not work. Does your patchset supposed to fix these problems? Okay, so just now I was able to reproduce all 3 problems on latest mainline ( f4a40a4282f467ec99745c6ba62cb84346e42139 ), which (as well as I understand) has this patchset applied. I reproduced them with /sys/power/freeze_filesystems set to both 0 and 1 (thus I did 3 * 2 = 6 experiments). I'm available for further testing. -- Askar Safin
