| commit | 9b0d3ace33ef225690a86d7130feadb22367f496 | [log] [tgz] |
|---|---|---|
| author | Chris Mason <chris.mason@oracle.com> | Wed Feb 04 09:33:00 2009 -0500 |
| committer | Chris Mason <chris.mason@oracle.com> | Wed Feb 04 09:33:00 2009 -0500 |
| tree | eae45955a38b4d4c2515549112ec749590b56aa9 | |
| parent | 7b78c170dc4f538cc7ee66f47b3aac3f3974a36c [diff] |
Btrfs: don't return congestion in write_cache_pages as often On fast devices that go from congested to uncongested very quickly, pdflush is waiting too often in congestion_wait, and the FS is backing off to easily in write_cache_pages. For now, fix this on the btrfs side by only checking congestion after some bios have already gone down. Longer term a real fix is needed for pdflush, but that is a larger project. Signed-off-by: Chris Mason <chris.mason@oracle.com>