linux-kernel - Re: [PATCH 07/44 take 2] [UBI] misc unit header

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Date:	Mon, 19 Feb 2007 11:00:17 +0000
From:	Christoph Hellwig <hch@...radead.org>
To:	Theodore Tso <tytso@....edu>,
	Artem Bityutskiy <dedekind@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Christoph Hellwig <hch@...radead.org>,
	Frank Haverkamp <haver@...t.ibm.com>,
	Josh Boyer <jwboyer@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: [PATCH 07/44 take 2] [UBI] misc unit header

On Sat, Feb 17, 2007 at 05:59:08PM -0500, Theodore Tso wrote:
> On Sat, Feb 17, 2007 at 06:54:59PM +0200, Artem Bityutskiy wrote:
> > diff -auNrp tmp-from/drivers/mtd/ubi/misc.h tmp-to/drivers/mtd/ubi/misc.h
> > --- tmp-from/drivers/mtd/ubi/misc.h	1970-01-01 02:00:00.000000000 +0200
> > +++ tmp-to/drivers/mtd/ubi/misc.h	2007-02-17 18:07:26.000000000 +0200
> > @@ -0,0 +1,146 @@
> > +#define xquotise(s) #s
> > +#define quotise(s) xquotise(s)
> 
> Nothing in your patch series uses this, and it's identical to
> stringify().   Please remove?
> 
> > +/**
> > + * rb_for_each_entry - walk an RB-tree.
> > + *
> > + * @rb: a pointer to type 'struct rb_node' to to use as a loop counter
> > + * @pos: a pointer to RB-tree entry type to use as a loop counter
> > + * @root: RB-tree's root
> > + * @member: the name of the 'struct rb_node' within the RB-tree entry
> > + */
> > +#define rb_for_each_entry(rb, pos, root, member)...
> 
> Shouldn't this be added to include/linux/rbtree.h?
> 
> > +/**
> > + * strdup_len - duplicate a string with known length.
> > + *
> > + * @str: original string
> > + * @len: the length of the string
> > + */
> > +char *strdup_len(const char *str, int len);
> 
> I'm not sure this should be polluting the kernel symbol namespace,
> especially since the implementation calls ubi_assert()....
> 
> It's not clear the assertion is all that useful, but if you must have
> it, why not do the check as an inline (with the assertion normally
> turned off), and then call out to kmemdup()?

Agreement to all of the above.  And _please_ move all kdoc comments to
the implementation files.
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