Re: [patch] VFS: extend /proc/mounts

[Chuck Lever]

On Jan 17, 2008, at 3:55 AM, Miklos Szeredi wrote:
> > Hey, I just found /proc/X/mountstats.  How does this fit in to the  
> > big
> > picture?
>
> It seems to show some counters for NFS mounts, no other filesystem
> uses it.  Format looks rather less nice, than /proc/X/mounts (why do
> we need long english sentences under /proc?).


I introduced /proc/self/mountstats because we need a way for non- 
block-device-based file systems to report I/O statistics.  Everything  
else I tried was rejected, and apparently what we ended up with was  
reviewed by only a handful of people, so no one else likes it or uses  
it.

It can go away for all I care, as long as we retain some flexible  
mechanism for non-block-based file systems to report I/O stats.  As  
far as I am aware, there are only two user utilities that understand  
and parse this data, and I maintain both.

--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
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