Am Friday 15 September 2006 12:27 schrieb Jörn Engel:
> -};
> +}__attribute__((aligned(64))); /* make sure the dentry is 128/192 bytes
> + on 32/64 bit independently of config
> + options. d_iname will vary in length
> + a bit. */
I'd guess that a 32 byte alignment is much better here, 64 byte sounds
excessive. It should have the same effect with the current dentry layout
and default config options, but would keep the d_iname length in the
16-44 byte range instead of 16-76 byte as your patch does.
Since all important fields are supposed to be kept in 32 bytes anyway,
they are still either at the start or the end of a given cache line,
but never cross two.
Arnd <><
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