| commit | 41be1f3b40b87de33cd2e7463dce88596dbdccc4 | [log] [tgz] |
|---|---|---|
| author | Josef Bacik <jbacik@fusionio.com> | Mon Oct 15 13:43:18 2012 -0400 |
| committer | Chris Mason <chris.mason@fusionio.com> | Sun Dec 16 20:46:26 2012 -0500 |
| tree | 6b2bd0ec252c70df303ec89b65fce172a9b5e921 | |
| parent | ad9145596986b672d8c8235c92ed5307f82d045d [diff] |
Btrfs: optimize leaf_space_used This gets called at least 4 times for every level while adding an object, and it involves 3 kmapping calls, which on my box take about 5us a piece. So instead use a token, which brings us down to 1 kmap call and makes this function take 1/3 of the time per call. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>