From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 10 Jan 2011 17:29:43 +0000 (-0500)
Subject: ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary
X-Git-Tag: v2.6.38-rc1~409^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8aefcd557d26d0023a36f9ec5afbf55e59f8f26b;p=pandora-kernel.git

ext4: dynamically allocate the jbd2_inode in ext4_inode_info as necessary

Replace the jbd2_inode structure (which is 48 bytes) with a pointer
and only allocate the jbd2_inode when it is needed --- that is, when
the file system has a journal present and the inode has been opened
for writing.  This allows us to further slim down the ext4_inode_info
structure.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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