On Mon, Dec 17, 2012 at 05:10:21PM -0800, Andy Lutomirski wrote: > I want to change inode->i_flags access to be atomic -- there are some > locking oddities right now, I think, and I want to use a new inode > flag to signal mtime updates from page_mkwrite. The problem is that > i_flags is an unsigned int, and making it an unsigned long seems like > a waste, but there aren't any u32 atomic bitops.
... and atomic accesses cost more. A lot more on some architectures. FWIW, atomic_t *is* 32bit on 32bit architectures, which still doesn't make it a good idea. -- 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/
