On Mon, 28 Jan 2019 10:16:27 +0100, Jan Kara said: > So my buffer_migrate_page_norefs() is certainly buggy in its current > incarnation (as a result block device page cache is not migratable at all). > I've sent Andrew a patch over week ago but so far it got ignored. The patch > is attached, can you give it a try whether it changes something for you? > Thanks!
Been running with the patch for about 24 hours, haven't seen kcompactd misbehave. I even fired up a Chrome with a lot of tabs open, a Firefox, and a kernel build, intentionally drove the system into swapping, and kcompactd didn't make it into the top 10 on 'top'. I'm willing to say put a "tested-by:" on that one, it looks fixed from here. If there's any remaining bugs, they're ones I can't seem to trigger...
