lkml.org 
[lkml]   [2003]   [Mar]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Fwd: struct inode size reduction.

On 03.09, Dave Jones wrote:
> Third retry, perhaps it'll make it through to the list
> now that vger is sending mail again...
>

If you do not need gcc-2.95 support, you can use anonymous unions:

+ union {
+ struct pipe_inode_info *i_pipe;
+ struct block_device *i_bdev;
+ struct char_device *i_cdev;
+ };

so you don't even have to change the accesses. Zero cost optimization patch.

I have tested on gcc-3.0, 3.2.2, RH gcc-2.96-98, and 2.95.2. Only 2.95.2
fails.

I do not know the compiler requirements for 2.5, or if there is any agreement
in kernel developement for not doing this. If this is the case, sorry for
the noise.

--
J.A. Magallon <jamagallon@able.es> \ Software is like sex:
werewolf.able.es \ It's better when it's free
Mandrake Linux release 9.1 (Cooker) for i586
Linux 2.4.21-pre5-jam0 (gcc 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk))
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:33    [W:0.078 / U:0.356 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site