From: Theodore Ts'o <tytso@mit.edu>
Date: Sat, 29 Oct 2011 12:24:18 +0000 (-0400)
Subject: fs: optimize out 16 bytes worth of padding in struct inode
X-Git-Tag: v3.2-rc1~85^2~20
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cdbb0effc2f511ced23e46f2117e4b31d3d4a50;p=pandora-kernel.git

fs: optimize out 16 bytes worth of padding in struct inode

Rearrange the fields in struct inode so that on an x86_64 system,
fields that require 8-byte alignment don't end up causing 4-byte holes
in the structure.  It reduces the size of struct inode from 568 bytes
to 552 bytes.

Also move the fields protected by i_lock (i_blocks, i_bytes, and
i_size) into the same cache line as i_lock.

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