DB_VMPAGESIZE
p += DB_VMPAGESIZE)
DB_ROUNDOFF(infop->size, DB_VMPAGESIZE);
DB_ROUNDOFF(new_size, DB_VMPAGESIZE);
char buf[DB_VMPAGESIZE];
for (i = 0; i < increment; i += DB_VMPAGESIZE) {
pages = (increment - DB_VMPAGESIZE) / MEGABYTE;
relative = (increment - DB_VMPAGESIZE) % MEGABYTE;
for (i = 0; i < increment; i += DB_VMPAGESIZE) {
0, 0, DB_VMPAGESIZE - 1, 0, SEEK_CUR)) != 0)