W dniu 26.08.2016 o 04:14, Kent Overstreet pisze:

On Thu, Aug 25, 2016 at 07:16:41PM +0200, Marcin wrote:

quoted

Hi again,
I created tiered filesystem (tier 1 device has 1.4TB, tier 0 device has
10GB) but mounting failed (host has 1GB of RAM):

enable CONFIG_COMPACTION - I'm going to change bcache's kconfig to enable that
if bcache is enabled, this comes up too much.

though, I believe that's the mempool for compression workspaces, can probably
switch that to vmalloc.

I saw thread "OOM regression in 4.7". I was thinking if it can be case
here but I have got COMPACTION turned on. And this situation occured
when most of ram was used by filesystem cache (but it wasn't dirty data).