linux-kernel - Re: kernel BUGs when removing largish files with the SLOB allocator

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Date:	Wed, 13 Sep 2006 14:39:17 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	David Howells <dhowells@...hat.com>
Cc:	Aubrey <aubreylee@...il.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	linux-kernel@...r.kernel.org, davidm@...pgear.com,
	gerg@...pgear.com
Subject: Re: kernel BUGs when removing largish files with the SLOB allocator

Another issue that occurred to me last night is that the size of
objects allocated with SLOB's slab-like API are implicit and not
calculable from the object. kmalloc'ed objects, in contrast, have a
header that contains the object size.

So ksize(kmalloc(...)) works, but not ksize(kmem_cache_alloc(...)). I
don't know if anything in the kernel is using the latter aside from
kobjsize.

-- 
Mathematics is the supreme nostalgia of our time.
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