From: Alberich de megres <alberich2k5@gmail.com>
To: linux-fsdevel@vger.kernel.org
Subject: ext4 allocator
Date: Mon, 25 Jan 2010 22:14:13 +0100 [thread overview]
Message-ID: <12d708831001251314i2b3d1f27o22d43c006165826@mail.gmail.com> (raw)
Hi!!
I'm studyng ext4 code, and i got a doubt on a situation:
Supposing a 4K page size, and a fs with 8K.. when we are filling page info,:
{ 4K page }{ 4K page }{ 4K page }{ 4K page }
[ group 0 bitmap ] [ group 0 buddy ]
Clearly bitmap and buddy info don't fits on a single page, but e4b
structure saves only one page address.
How mb allocator menages this situation??
Thanks!!!
next reply other threads:[~2010-01-25 21:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-25 21:14 Alberich de megres [this message]
2010-01-25 21:37 ` ext4 allocator Andreas Dilger
2010-01-25 22:44 ` Alberich de megres
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