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SubjectRe: [PATCH 3/8] readahead: replace ra->mmap_miss with ra->ra_flags
On Wed, 23 Nov 2011 20:47:45 +0800
Wu Fengguang <> wrote:

> > should be ulong, which is compatible with the bitops.h code.
> > Or perhaps we should use a bitfield and let the compiler do the work.
> What if we do
> u16 mmap_miss;
> u16 ra_flags;
> That would get rid of this patch. I'd still like to pack the various
> flags as well as pattern into one single ra_flags, which makes it
> convenient to pass things around (as one single parameter).

I'm not sure that this will improve things much...

Again, how does the code look if you use a bitfield and let the
compiler do the worK?

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