tree a816e64b9c9fa84ae3033ecf12a21a429a7301d9
parent 567a45e917343c952806bb9f5c19aab0139bd519
author Chris Mason <chris.mason@oracle.com> 1323981521 -0500
committer Chris Mason <chris.mason@oracle.com> 1323981521 -0500

Btrfs: unplug every once and a while

The btrfs io submission threads can build up massive plug lists.  This
keeps things more reasonable so we don't hand over huge dumps of IO at
once.

Signed-off-by: Chris Mason <chris.mason@oracle.com>