Re: [Use cpuops V1 10/11] fs: Use this_cpu_xx operations in buffer.c

[Tejun Heo]

On 12/06/2010 06:16 PM, Christoph Lameter wrote:
> Optimize various per cpu area operations through the new this cpu
> operations. These operations avoid address calculations through the use
> of segment prefixes avoid multiple memory references through RMW
> instructions etc.
> 
> Reduces code size:
> 
> Before:
> 
> christoph@xxxxxxxxx$ size fs/buffer.o
>    text	   data	    bss	    dec	    hex	filename
>   19169	     80	     28	  19277	   4b4d	fs/buffer.o
> 
> After:
> 
> christoph@xxxxxxxxx$ size fs/buffer.o
>    text	   data	    bss	    dec	    hex	filename
>   19138	     80	     28	  19246	   4b2e	fs/buffer.o
> 
> V3->V4:
> 	- Move the use of this_cpu_inc_return into a later patch so that
> 	  this one can go in without percpu infrastructure changes.
> 
> Cc: Wu Fengguang <fengguang.wu@xxxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>

applied 10 and 11.

-- 
tejun
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