From: T Makphaibulchoke <tmac@hp.com>
Date: Tue, 18 Mar 2014 23:24:49 +0000 (-0400)
Subject: ext4: each filesystem creates and uses its own mb_cache
X-Git-Tag: v3.15-rc1~91^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c191f701ce9f9bc604e88a5dc69cd943daa5d3b;p=pandora-kernel.git

ext4: each filesystem creates and uses its own mb_cache

This patch adds new interfaces to create and destory cache,
ext4_xattr_create_cache() and ext4_xattr_destroy_cache(), and remove
the cache creation and destory calls from ex4_init_xattr() and
ext4_exitxattr() in fs/ext4/xattr.c.

fs/ext4/super.c has been changed so that when a filesystem is mounted
a cache is allocated and attched to its ext4_sb_info structure.

fs/mbcache.c has been changed so that only one slab allocator is
allocated and used by all mbcache structures.

Signed-off-by: T. Makphaibulchoke <tmac@hp.com>
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