Re: 2.6.28 /proc/diskstats

[Sam Ravnborg]

On Mon, Apr 13, 2009 at 02:21:10AM +0100, Daniel Collins wrote:
> I've stepped through the commits in linux-2.6, the first revision with 
> this behavior is 074a7aca7afa6f230104e8e65eba3420263714a5

It would be a good idea to:
1) mention the subject of said path as no-one remember all these
SHA-1 anyway (but include the SHA-1 for reference.
2) copy the author of said patch.

The relevant patch is: "block: move stats from disk to part0"

I have copied Tejun and JEns.

The rest of the mail kept for reference.

	Sam


> 
> Daniel Collins wrote:
> >Hi
> >
> >Since 2.6.28, fd0 isn't visible in /proc/diskstats from boot, only 
> >after access/mount. It is visible in /sys/block/ from boot, so there 
> >are no issues detecting it. This may also affect other devices such as 
> >hda but I haven't tested this yet, my test system and QEMU both only 
> >have ram0-ram15 from boot. I have tested 2.6.30-rc1 and found the same 
> >behavior. Is this a bug or a deliberate change?
> >
> >Thanks
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