Am 17.03.2016 um 08:11 schrieb Joonsoo Kim: >> It is still not clear why UBIFS has to provide a >migratepage() and what the expected semantics >> are. >> What we know so far is that the fall back migration function is broken. I'm sure not only on UBIFS. >> >> Can CMA folks please clarify? :-) > > Hello, > > As you mentioned earlier, this issue would not be directly related > to CMA. It looks like it is more general issue related to interaction > between MM and FS. Your first error log shows that error happens when > ubifs_set_page_dirty() is called in try_to_unmap_one() which also > can be called by reclaimer (kswapd or direct reclaim). Quick search shows > that problem also happens on reclaim. Is that fixed? > > http://www.spinics.net/lists/linux-fsdevel/msg79531.html Well, this problem happened only on a tainted kernel and never popped up again. So, I really don't know. :-) > I think that you need to CC other people who understand interaction > between MM and FS perfectly. Who is missing on the CC list? 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>