commit e39a061e84808edf2a4d2bd9f2cf202228ba69de Author: Tomohiro Kusumi <kusumi.tomoh...@gmail.com> Date: Sat Aug 8 01:03:37 2015 +0900
sbin/hammer: Optimize freemap initialization Bring in the way hammer_iterate_l1l2_entries() initializes layer1/2 to initialize_freemap(). The layer1 crc needs to be updated only once in every 2^19 layer2 entries. No need to do it for every layer2 entry as they'll be overwritten except for the one after the last layer2 (2^19th layer2 entry) within layer1. Also having nested loops here for layer1 and layer2 seems to better explain the concept of hammer's blockmap. Summary of changes: sbin/hammer/ondisk.c | 67 +++++++++++++++++++++++++++++----------------------- 1 file changed, 38 insertions(+), 29 deletions(-) http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/e39a061e84808edf2a4d2bd9f2cf202228ba69de -- DragonFly BSD source repository