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. -- 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>