On Tue, Dec 26, 2023 at 05:38:31PM +0800, Yu Kuai wrote: > Hi, > > 在 2023/12/26 17:14, Christoph Hellwig 写道: >> BLK_DEF_MAX_SECTORS is (as the name implies) already the default. > > Looks like this not true. From blk_set_default_limits(): > > lim->max_sectors = lim->max_hw_sectors = BLK_SAFE_MAX_SECTORS; > > So, the default is not BLK_DEF_MAX_SECTORS. Or am I missing something? No, you're not. The naming and our code is just a desaster..