Bug 60591
Summary: | nfs over openvpn locks up | ||
---|---|---|---|
Product: | File System | Reporter: | Jan Kratochvil (jan) |
Component: | NFS | Assignee: | Trond Myklebust (trondmy) |
Status: | CLOSED WILL_NOT_FIX | ||
Severity: | low | CC: | jlayton |
Priority: | P1 | ||
Hardware: | x86-64 | ||
OS: | Linux | ||
Kernel Version: | 3.9.9-201.fc18 | Subsystem: | |
Regression: | No | Bisected commit-id: |
Description
Jan Kratochvil
2013-07-20 12:01:21 UTC
...and even if we don't allow releasepage to block here we could still end up in direct reclaim here AFAICT. Note that this sort of deadlock is not specific to VPN daemons either. Any time the kernel has to rely on a userland program to talk to the NFS server, and that userland program can trigger a memory allocation you can end up in a similar situation. As Jeff says: there is no reasonable solution for this kind of bug. There will always be a danger of deadlocks when using openvpn. Closing as "will_not_fix". |