Subject: Re: /dev on tmpfs problem
To: None <email@example.com>
From: YAMAMOTO Takashi <firstname.lastname@example.org>
Date: 11/10/2005 16:06:15
> It appears that if I mount /dev/wd0e on /mnt, and /dev is a tmpfs, changes
> in /mnt are not flushed to wd0a. Instead, dirty blocks linger until I
> unmount /mnt. I first noticed this because all of my tmpfs filesystems
> showed 0 blocks available as I extracted a large .tgz file under /mnt/.
if tmpfs ENOSPC is only symptom you see,
it's normal regarding buffer cache.
because tmpfs doesn't know the fact that some memory like buffer cache
can be reclaimed on-demand, it behaves too conservatively if memory is
filled up with caches.