| commit | 308d9800b2c4f1fb344dbf055912d3140438bac0 | [log] [tgz] |
|---|---|---|
| author | Filipe Manana <fdmanana@gmail.com> | Tue Mar 11 13:56:15 2014 +0000 |
| committer | Chris Mason <clm@fb.com> | Thu Mar 20 17:15:27 2014 -0700 |
| tree | 24c94bc9e5d7aa3394a35d767f78f245e2922a58 | |
| parent | 3bbb24b20a8800158c33eca8564f432dd14d0bf3 [diff] |
Btrfs: cache extent states in defrag code path When locking file ranges in the inode's io_tree, cache the first extent state that belongs to the target range, so that when unlocking the range we don't need to search in the io_tree again, reducing cpu time and making and therefore holding the io_tree's lock for a shorter period. Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com> Signed-off-by: Chris Mason <clm@fb.com>