On Fri, 2009-06-12 at 15:44 +0200, Gerd Hoffmann wrote:
> Hi,
>
> > + * Reference:
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=601cc11d054ae4b5e9b5babec3d8e4667a2cb9b5
>
> Look at the commit message again ...
Oops. I will fix that soon and resend.
Regards--
Subrata
>
> > +static ssize_t preadv(int fd, const struct iovec *iov, int iovcnt, off_t
> > offset)
> > +{
> > + uint32_t pos_high = (offset>> 32)& 0xffffffff;
> > + uint32_t pos_low = offset& 0xffffffff;
> > +
> > + return syscall(__NR_preadv, fd, iov, iovcnt, pos_high, pos_low);
> > +}
>
> No.
>
> #define HALF_BITS (sizeof(unsigned long)*4)
> return syscall(__NR_preadv, fd, iov, iovcnt, offset,
> (offset >> HALF_BITS) >> HALF_BITS);
>
> Likewise for pwritev.
>
> Also note that latest glibc has preadv/pwritev support, so you could use
> that instead.
>
> cheers,
> Gerd
>
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