On Thu, Jan 11, 2018 at 05:24:58PM -0600, Eric Sandeen wrote:
> On 1/5/18 7:52 PM, Darrick J. Wong wrote:
> > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>
> ...
>
> > +/*
> > + * Disk Abstraction
> > + *
> > + * These routines help us to discover the geometry of a block device,
> > + * estimate the amount of concurrent IOs that we can send to it, and
> > + * abstract the process of performing read verification of disk blocks.
> > + */
> > +
> > +/* Figure out how many disk heads are available. */
> > +static unsigned int
> > +__disk_heads(
> > + struct disk *disk)
> > +{
> > + int iomin;
> > + int ioopt;
> > + unsigned short rot;
> > + int error;
> > +
> > + /* If it's not a block device, throw all the CPUs at it. */
> > + if (!S_ISBLK(disk->d_sb.st_mode))
> > + return nproc;
> > +
> > + /* Non-rotational device? Throw all the CPUs. */
> > + rot = 1;
> > + error = ioctl(disk->d_fd, BLKROTATIONAL, &rot);
> > + if (error == 0 && rot == 0)
> > + return nproc;
>
> I needed
>
> +#ifndef BLKROTATIONAL
> +#define BLKROTATIONAL _IO(0x12,126)
> +#endif
>
> to make this compile on my not /that/ ancient (?) rhel6 box ;)
Hmm... well, since I don't see backporting xfs kernel scrub to 2.6.32
maybe xfsprogs' build system should just turn off xfs_scrub on old
systems?
In any case, I #ifdef BLKROTATIONAL'd out the entire clause.
--D
> -Eric
> --
> To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
