tree 3738e358e75088d300b289e013beccffe0af8e05
parent 0279b4cd86685b5eea467c1b74ce94f0add2c0a3
author Chris Mason <chris.mason@oracle.com> 1233757404 -0500
committer Chris Mason <chris.mason@oracle.com> 1233757404 -0500

Btrfs: async threads should try harder to find work

Tracing shows the delay between when an async thread goes to sleep
and when more work is added is often very short.  This commit adds
a little bit of delay and extra checking to the code right before
we schedule out.

It allows more work to be added to the worker
without requiring notifications from other procs.

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