Oleksij, Am 12.04.2017 um 09:15 schrieb Oleksij Rempel: > On Tue, Apr 11, 2017 at 10:48:28PM -0700, Christoph Hellwig wrote: >> On Tue, Apr 11, 2017 at 10:43:26PM +0200, Richard Weinberger wrote: >>> Artem, do you remember why UBIFS didn't set s_uuid in first place? >> >> It's an extremely odd field - only a hand full of file systems set it >> (e.g. XFS doesn't, although according to Mimi IMA supports XFS), and >> it's never even used outside of the IMA/EVM code. >> >> We really need a feature flag that this field is valid that IMA can >> check before adding more support for it. > > It seems to be used by mm/cleancache.c > void __cleancache_init_shared_fs() > > but this affects only ocfs2. > > So, if some flag should be implemented, who should do it? :) I'll not do it for you. ;) > If me, what flag should be created? A super block flag that denotes that s_uuid is valid. Thanks, //richard
