Chunwei Chen bc25c9325b Use a dedicated taskq for vdev_file ...

Originally, vdev_file used system_taskq. This would cause a deadlock,
especially on system with few CPUs. The reason is that the prefetcher
threads, which are on system_taskq, will sometimes be blocked waiting
for I/O to finish. If the prefetcher threads consume all the tasks in
system_taskq, the I/O cannot be served and thus results in a deadlock.

We fix this by creating a dedicated vdev_file_taskq for vdev_file I/O.

Signed-off-by: Chunwei Chen <tuxoko@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2270

2014-05-14 16:20:21 -07:00

..

avl

Add module versioning

2013-12-06 09:34:41 -08:00

nvpair

Fix nvlist 'Bus Error' for Sparc

2014-01-09 15:50:15 -08:00

unicode

cstyle: Resolve C style issues

2013-12-18 16:46:35 -08:00

zcommon

Check the dataset type more rigorously when fetching properties.

2014-05-06 10:41:46 -07:00

zfs

Use a dedicated taskq for vdev_file

2014-05-14 16:20:21 -07:00

zpios

cstyle: Resolve C style issues

2013-12-18 16:46:35 -08:00

.gitignore

gitignore: anchor entries at their respective directory

2013-04-02 10:50:17 -07:00

Makefile.in

Add KMODDIR to install target

2013-03-06 15:46:40 -08:00