From: Eric Sandeen <sandeen@redhat.com>
To: ext4 development <linux-ext4@vger.kernel.org>
Subject: "- 8" in EXT2_MAX_BLOCKS_PER_GROUP
Date: Mon, 10 Oct 2011 10:50:43 -0500 [thread overview]
Message-ID: <4E931453.3010002@redhat.com> (raw)
When looking at the maximal filesystem size issue, I found myself
wondering what the "- 8" is in here, it's not commented
or documented anywhere:
#define EXT2_MAX_BLOCKS_PER_GROUP(s) (((1 << 16) - 8) * \
(EXT2_CLUSTER_SIZE(s) / \
EXT2_BLOCK_SIZE(s)))
(pre-bigalloc, it was just ((1 << 16) - 8) )
Anyone know?
-Eric
next reply other threads:[~2011-10-10 15:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-10 15:50 Eric Sandeen [this message]
2011-10-10 18:43 ` "- 8" in EXT2_MAX_BLOCKS_PER_GROUP Eric Sandeen
2011-10-10 20:11 ` Darrick J. Wong
2011-10-10 20:34 ` Eric Sandeen
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