log_write          86 defs.h         void            log_write(struct buf*);
log_write          49 fs.c             log_write(bp);
log_write          69 fs.c                   log_write(bp);
log_write          93 fs.c             log_write(bp);
log_write         207 fs.c                 log_write(bp);   // mark it allocated on the disk
log_write         234 fs.c             log_write(bp);
log_write         393 fs.c                 log_write(bp);
log_write         502 fs.c               log_write(bp);