On Wed, Sep 04, 2013 at 07:48:14PM -0700, Linus Torvalds wrote: > - use the name length as a maximum > > - do a byte-at-a-time copy, stopping at a zero (it's going to be > faster than memchr anyway) > > Then, later on, we can do one that does a word-at-a-time using the > CONFIG_DCACHE_WORD_ACCESS magic: we know dentry names are always > word-aligned, and we have an efficient "has_zero()" function for > finding zero bytes in a word.
Umm... Dentry names are word-aligned, but the place where we copy them doesn't have to be. OTOH, DCACHE_WORD_ACCESS is for architectures where unaligned stores are fine, so... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
