try_write_zeroes 365 block/blk-lib.c bool try_write_zeroes = !!bdev_write_zeroes_sectors(bdev); try_write_zeroes 374 block/blk-lib.c if (try_write_zeroes) { try_write_zeroes 389 block/blk-lib.c if (ret && try_write_zeroes) { try_write_zeroes 391 block/blk-lib.c try_write_zeroes = false;