diff options
| author | Thorsten Knabe <linux@thorsten-knabe.de> | 2014-08-23 15:47:38 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2014-10-13 21:45:55 +0200 |
| commit | 2a2361228c5e6d8c1733f00653481de918598e50 (patch) | |
| tree | d3cdbfaa7aecbe941417bc63435b1f315aabf762 /arch/um/kernel/sysrq.c | |
| parent | 9e6a57d2cdee36a6d9c5d5cc3db85713dd416719 (diff) | |
| download | linux-stable-2a2361228c5e6d8c1733f00653481de918598e50.tar.gz linux-stable-2a2361228c5e6d8c1733f00653481de918598e50.tar.bz2 linux-stable-2a2361228c5e6d8c1733f00653481de918598e50.zip | |
um: ubd: Fix for processes stuck in D state forever
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>
Cc: stable@kernel.org # >= 3.12
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel/sysrq.c')
0 files changed, 0 insertions, 0 deletions