On Thu, Aug 16, 2007 at 10:06:31AM +0200, Stefan Richter wrote: > > > > Do you (or anyone else for that matter) have an example of this? > > The only code I somewhat know, the ieee1394 subsystem, was perhaps > authored and is currently maintained with the expectation that each > occurrence of atomic_read actually results in a load operation, i.e. is > not optimized away. This means all atomic_t (bus generation, packet and > buffer refcounts, and some other state variables)* and likewise all > atomic bitops in that subsystem.
Can you find an actual atomic_read code snippet there that is broken without the volatile modifier? Thanks, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
