Re: dentry_cache using up all my zone normal memory -- also seen on 2.6.14-rc2

[Dipankar Sarma <dipankar@in.ibm.com>]

On Wed, Sep 21, 2005 at 02:59:30PM -0600, Christopher Friesen wrote:
> Sonny Rao wrote:
> 
> >Over one million files open at once is just asking for trouble on a
> >lowmem-crippled x86 machine, IMHO.
> 
> I don't think there actually are.  I ran the testcase under strace, and 
> it appears that there are two threads going at once.
> 
> thread 1 spins doing the following:
> fd = creat("./rename14", 0666);
> unlink("./rename14");
> close(fd);
> 
> thread 2 spins doing:
> rename("./rename14", "./rename14xyz");

Ewww.. Looks like a leak due to a race.

Does this happen on a non-nfs filesystem ?

Thanks
Dipankar