Am 09.02.2017 um 13:17 schrieb Jan Kara: >> So ->capabilities is now zero by default since you use __GFP_ZERO in >> bdi_alloc(). >> At least for UBIFS I'll add a comment on this, otherwise it is not so >> clear that UBIFS wants a BDI with no capabilities and how it achieves that. > > OK, I've modified the comment to: > > * Read-ahead will be disabled because @sb->s_bdi->ra_pages is 0. Also > * @sb->s_bdi->capabilities are initialized to 0 so there won't be any > * writeback happening. > */ Nice! Thanks, //richard