[CentOS] tmpfs says "No space left on device"

> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of Adam Tauno Williams
> Sent: Wednesday, December 01, 2010 9:14 AM
> To: centos at centos.org
> Subject: [CentOS] tmpfs says "No space left on device"
> 
> I have a server where we use tmpfs as a cache for temporary 
> files used by a web application.  But occasionally this tmpfs 
> thinks it is full when it isn't.
> 
> [root at flask-yellow tmpfs]# touch file
> touch: cannot touch `file': No space left on device 
> [root at flask-yellow tmpfs]# df -k
> Filesystem           1K-blocks      Used Available Use% Mounted on
> none                    393216     19296    373920   5% /srv/tmpfs

What does lsof show regarding file open on this device?  I'm thinking
files opened, then unlinked, but file descriptors not yet closed.
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