linux-kernel - Re: [PATCH 0/2] Improve dump_page() output for slab pages

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Date: Wed, 22 May 2024 15:11:43 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Sukrit Bhatnagar <Sukrit.Bhatnagar@...y.com>
Cc: Petr Mladek <pmladek@...e.com>, Steven Rostedt <rostedt@...dmis.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Jonathan Corbet <corbet@....net>, Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Hyeonggon Yoo <42.hyeyoo@...il.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linux-trace-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Improve dump_page() output for slab pages

On Wed, May 22, 2024 at 04:46:27PM +0900, Sukrit Bhatnagar wrote:
> On the other hand, the struct slab has kmem_cache which maintains another set
> of flags. It would be nice to have these flags added as a part of the debug
> output, and to have a convenient way to print them.

I don't understand why the slab cache flags are the interesting thing.
Seems to me it'd be more useful to print slab->slab_cache->name and
then you'd be able to look up the flags from that, as well as get a lot
more information.