From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 16 Aug 2012 15:59:04 +0000 (-0400)
Subject: ext4: fix long mount times on very big file systems
X-Git-Tag: v3.2.29~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ac2515cf5201e7762c16303d860b6ec0e02aecb;p=pandora-kernel.git

ext4: fix long mount times on very big file systems

commit 0548bbb85337e532ca2ed697c3e9b227ff2ed4b4 upstream.

Commit 8aeb00ff85a: "ext4: fix overhead calculation used by
ext4_statfs()" introduced a O(n**2) calculation which makes very large
file systems take forever to mount.  Fix this with an optimization for
non-bigalloc file systems.  (For bigalloc file systems the overhead
needs to be set in the the superblock.)

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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