On Sun, Mar 22, 2015 at 04:14:52PM +0800, Ming Lei wrote: > The raw page allocated in lo_send() can be a highmem page, > so kmap(page) should be used for read/write on the page. > > Also the patch removes kmap()/kunmap() in lo_send() because > it isn't needed at all.
The description seems odd, what it seems to do is to shift the kmap from lo_send into do_lo_send_write. This does not seem very useful as it now means a kmap per segment instead of just a single one per I/O. What would make more sense is to just not allocate a highmem page. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
