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Message-ID: <20131120224254.GA3939@brouette>
Date: Wed, 20 Nov 2013 23:42:54 +0100
From: Damien Wyart <damien.wyart@...il.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Al Viro <viro@...iv.linux.org.uk>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [git pull] vfs.git bits and pieces
> > BTW, something odd happened to mm/memory.c - either a mangled patch
> > or a lost followup:
> > commit ea1e7ed33708
> > mm: create a separate slab for page->ptl allocation
> > Fair enough, and yes, it does create that separate slab. The problem
> > is, it's still using kmalloc/kfree for those beasts -
> > page_ptl_cachep isn't used at all...
* Linus Torvalds <torvalds@...ux-foundation.org> [2013-11-20 14:33]:
> Ok, it looks straightforward enough to just replace the kmalloc/kfree
> with using a slab allocation using the page_ptl_cachep pointer. I'd do
> it myself, but I would like to know how it got lost? Also, much
> testing to make sure the cachep is initialized early enough.
The initial sending had the proper hunks at the end, so something really
got lost afterwards...
https://lkml.org/lkml/2013/10/22/129
--
Damien Wyart
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