Hi, These cases "hang" when testing with -o dax mount option: xfstests generic/030 generic/34{0,4,5,6} generic/198 (maybe more) The test programme holetest or aiodio keep running for a long time. It's killable, but it seems never return. With both ext4 and xfs as fs. Without -o dax mount option, cases pass in seconds. 0111 tree passed the tests. sh-4.2# git log --oneline next-20170111..next-20170112 fs/dax.c 0c9a7909dd13 mm, dax: change pmd_fault() to take only vmf parameter f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as fault() 9da8ffdee91c dax: add tracepoints to dax_pmd_insert_mapping() 70f05119457d dax: add tracepoints to dax_pmd_load_hole() 151db525a842 dax: add tracepoint infrastructure, PMD tracing c55f30633af7 dax: fix build warnings with FS_DAX and !FS_IOMAP f729c8c9b24f dax: wrprotect pmd_t in dax_mapping_entry_mkclean -- 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