On Mon, 21 May 2007 19:18:55 -0500 Eric Sandeen <[email protected]> wrote:
> Andrew Morton wrote:
> > On Mon, 21 May 2007 13:11:21 -0500
> > Eric Sandeen <[email protected]> wrote:
> >
> >> This is a non-ida backport of Tejun's patch in -mm at:
> >> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc1/2.6.22-rc1-mm1/broken-out/gregkh-driver-sysfs-allocate-inode-number-using-ida.patch
> >> for the 2.6.16 -stable tree - it follows the same scheme of using s_ino to safely
> >> store & retrieve the inode number of sysfs entries for use in sysfs_readdir,
> >> but uses a brain-dead-simple inode nr allocator rather than ida, which would
> >> bring along a lot of newer, more complex code.
> >>
> >> No, this doesn't guarantee uniqueness of sysfs inode numbers, but then
> >> the code in -stable today doesn't either - and with this change, at least
> >> it shouldn't oops.
> >
> > So I'm sitting here whether to commend this patch to google kernel maintainers
> > for 2.6.18 backport, but I realise I don't know what it does. And I don't know
> > if it fixes the reclaim-time oopses they were intermittently seeing, or if it
> > fixes something else and if so what that is.
> >
> > Sigh. Better changelogs, please.
> >
>
> Sorry Andrew. I referenced Tejun's upstream patch in -mm which has a
> nice changelog etc, and this is a backport of that, and does the same
> thing in the same way and solves the same problem - but that doesn't
> help if you just want to toss this message into your patch stack. Will
> fix up & resend.
>
Actually, someone (eg distros) looking at Tejun's changelog would still be
struggling to answer the question "do I need this". The one thing it
claims to fix is "duplicate inode numbers". But why is that a problem?
What are the user-visible consequences of not merging the patch? Unobvious.
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