Am 17.06.2016 um 01:11 schrieb Andrew Morton: > On Thu, 16 Jun 2016 23:26:13 +0200 Richard Weinberger <richard@xxxxxx> wrote: > >> While block oriented filesystems use buffer_migrate_page() >> as page migration function other filesystems which don't >> implement ->migratepage() will automatically get fallback_migrate_page() >> assigned. fallback_migrate_page() is not as generic as is should >> be. Page migration is filesystem specific and a one-fits-all function >> is hard to achieve. UBIFS leaned this lection the hard way. >> It uses various page flags and fallback_migrate_page() does not >> handle these flags as UBIFS expected. >> >> To make sure that no further filesystem will get confused by >> fallback_migrate_page() disable the automatic assignment and >> allow filesystems to use this function explicitly if it is >> really suitable. > > hm, is there really much point in doing this? I assume it doesn't > actually affect any current filesystems? > > [2/3] is of course OK - please add it to the UBIFS tree. Pushed 2/3 and 3/3 into UBIFS next tree. 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>