Re: [PATCH] mm/slab.c, kernel <2.4.20>

[Marc-Christian Petersen]

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On Wednesday 08 January 2003 23:03, Shangc wrote:

Hi Shangc,

> --- slab.c=092003-02-08 04:26:50.000000000 -0500
> +++ slab.c=092003-02-08 04:26:14.000000000 -0500
> @@ -397,7 +397,7 @@
>  =09=09base =3D sizeof(slab_t);
>  =09=09extra =3D sizeof(kmem_bufctl_t);
>  =09}
> -=09i =3D 0;
> +=09i =3D (wastage - base) / (size + extra);
>  =09while (i*size + L1_CACHE_ALIGN(base+i*extra) <=3D> wastage)
>  =09=09i++;
>  =09if (i > 0)
if you use this you may also want this.

ciao, Marc
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diff -Naurp a/mm/slab.c b/mm/slab.c
--- a/mm/slab.c	Wed Jul 17 12:25:04 2002
+++ b/mm/slab.c	Wed Jul 17 12:25:04 2002
@@ -399,10 +399,10 @@
 		base = sizeof(slab_t);
 		extra = sizeof(kmem_bufctl_t);
 	}
-	i = 0;
+       i = (wastage - base)/(size + extra);
 	while (i*size + L1_CACHE_ALIGN(base+i*extra) <= wastage)
 		i++;
-	if (i > 0)
+       while (i*size + L1_CACHE_ALIGN(base+i*extra) > wastage)
 		i--;
 
 	if (i > SLAB_LIMIT)

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