Am 15.03.2016 um 16:37 schrieb Christoph Hellwig: > On Tue, Mar 15, 2016 at 04:32:40PM +0100, Richard Weinberger wrote: >>> Or if ->page_mkwrite() was called, why the page is not dirty? >> >> BTW: UBIFS does not implement ->migratepage(), could this be a problem? > > This might be the reason. I can't reall make sense of > buffer_migrate_page, but it seems to migrate buffer_head state to > the new page. > > I'd love to know why CMA even tries to migrate pages that don't have a > ->migratepage method, this seems incredibly dangerous to me. FYI, with a dummy ->migratepage() which returns only -EINVAL UBIFS does no longer explode upon page migration. Tomorrow I'll do more tests to make sure. Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
