page_array_alloc
ret = page_array_alloc(pa, idaw_nr);
cic->rpages = page_array_alloc(sbi, cc->cluster_size);
cc->rpages = page_array_alloc(F2FS_I_SB(cc->inode), cc->cluster_size);
dic->tpages = page_array_alloc(dic->sbi, dic->cluster_size);
dic->rpages = page_array_alloc(sbi, cc->cluster_size);
dic->cpages = page_array_alloc(sbi, dic->nr_cpages);
cc->cpages = page_array_alloc(sbi, cc->nr_cpages);