Re: [PATCHSET 2.6.22-rc2-mm1] sysfs: reduce memory footprint of sysfs_dirent

[Dmitry Torokhov]

Hi Tejun,

On 5/28/07, Tejun Heo <htejun@xxxxxxxxx> wrote:
> Hello, all.
>
> This patchset reduces the size of sysfs_dirent to 88 byte from 136 on
> 64bit and to 52 from 76 on 32bit.  Combined with forthcoming
> reclaimable sysfs directories, this will make sysfs much more scalable
> on very large machines and very small machines.
>
> This patchset contains the following three patches.
>
> #01: move-s_active-functions-to-fs-sysfs-dir-c, prep for #02
> #02: slim-down-sysfs_dirent-s_active
> #03: use-signly-linked-list-for-sysfs_dirent-tree
>
> I'm pretty sure #02 is a good idea but #03 is debatable.  The code
> doesn't look much uglier after the conversion tho.  Inputs welcome.

I think that #3 is a good idea as well - we have a lot of sysfs
objects on any given system and slimming down sysfs benefits everyone.

--
Dmitry
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