From: ebiederm@xmission.com (Eric W. Biederman)
To: Greg Kroah-Hartman <gregkh@suse.de>
Cc: <linux-kernel@vger.kernel.org>, Tejun Heo <tj@kernel.org>,
Mikulas Patocka <mpatocka@redhat.com>
Subject: [PATCH 0/4] sysfs: Reduce the size of sysfs_dirent
Date: Sun, 18 Dec 2011 20:03:08 -0800 [thread overview]
Message-ID: <m1aa6pky2r.fsf@fess.ebiederm.org> (raw)
After throwing rb_trees at the problem sysfs_dirent increased in size by
6 pointers, or 48 bytes. Since the point of having struct
sysfs_dirent is to keep the size down increasing in size that much seems
unfortunate.
The following patches attack this problem and if I have counted right
reduce the size of sysfs_dirent by 4 pointers on 64bit. Not quite
where we were but reducing sysfs_dirent by 32bytes to 104 bytes is
an improvement.
Eric
next reply other threads:[~2011-12-19 4:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-19 4:03 Eric W. Biederman [this message]
2011-12-19 4:05 ` [PATCH 1/4] sysfs: Add s_hash to sysfs_dirent and order directory entries by hash Eric W. Biederman
2011-12-19 4:07 ` [PATCH 2/4] sysfs: Reduce s_flags to an unsinged short so it packs well with s_mode Eric W. Biederman
2011-12-19 4:08 ` [PATCH 3/4] sysfs: Store the sysfs inode in an unsigned int Eric W. Biederman
2011-12-19 4:09 ` [PATCH 4/4] sysfs: Kill nlink counting Eric W. Biederman
2012-01-04 5:43 ` [PATCH 0/4] sysfs: Reduce the size of sysfs_dirent Eric W. Biederman
2012-01-08 17:56 ` Greg KH
2012-01-08 18:15 ` Eric W. Biederman
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