nbd: fix zero cmd timeout handling v2
This fixes a regression added in 4.9 with commit: commit 0eadf37a Author: Josef Bacik <jbacik@fb.com> Date: Thu Sep 8 12:33:40 2016 -0700 nbd: allow block mq to deal with timeouts where before the patch userspace would set the timeout to 0 to disable it. With the above patch, a zero timeout tells the block layer to use the default value of 30 seconds. For setups where commands can take a long time or experience transient issues like network disruptions this then results in IO errors being sent to the application. To fix this, the patch still uses the common block layer timeout framework, but if zero is set, nbd just logs a message and then resets the timer when it expires. Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Signed-off-by: NMike Christie <mchristi@redhat.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
Showing
想要评论请 注册 或 登录