diff options
| author | Thorsten Knabe <linux@thorsten-knabe.de> | 2014-08-23 15:47:38 +0200 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-11-13 19:02:16 +0100 |
| commit | 63550e4be59837925cc1bee167bee83a90ce974c (patch) | |
| tree | fe08554948be1e738171918f87bb91fd69724126 /lib | |
| parent | ec84c5e8a19be56aa297f195885e0303a956230f (diff) | |
um: ubd: Fix for processes stuck in D state forever
commit 2a2361228c5e6d8c1733f00653481de918598e50 upstream.
Starting with Linux 3.12 processes get stuck in D state forever in
UserModeLinux under sync heavy workloads. This bug was introduced by
commit 805f11a0d5 (um: ubd: Add REQ_FLUSH suppport).
Fix bug by adding a check if FLUSH request was successfully submitted to
the I/O thread and keeping the FLUSH request on the request queue on
submission failures.
Fixes: 805f11a0d5 (um: ubd: Add REQ_FLUSH suppport)
Signed-off-by: Thorsten Knabe <linux@thorsten-knabe.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions