Am 15.03.2016 um 16:17 schrieb Kirill A. Shutemov: > On Tue, Mar 15, 2016 at 03:16:11PM +0100, Richard Weinberger wrote: >> Hi! >> >> We're facing this issue from 2014 on UBIFS: >> http://www.spinics.net/lists/linux-fsdevel/msg79941.html >> >> So sum up: >> UBIFS does not allow pages directly marked as dirty. It want's everyone to do it via UBIFS's >> ->wirte_end() and ->page_mkwirte() functions. >> This assumption *seems* to be violated by CMA which migrates pages. > > I don't thing the CMA/migration is the root cause. > > How did we end up with writable and dirty pte, but not having > ->page_mkwrite() called for the page? > > Or if ->page_mkwrite() was called, why the page is not dirty? BTW: UBIFS does not implement ->migratepage(), could this be a problem? Thanks, //richard -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>