On Tue, Feb 24, 2009 at 03:11:05AM -0700, Andreas Dilger wrote:
> On Feb 24, 2009 00:05 -0500, Theodore Ts'o wrote:
> > +#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 10)
> > /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
>
> Please don't use ioctl number 10 - it was used by an early
> version of the FIEMAP ioctl that we still have in use in Lustre
> filesystems. Not that there is much chance of a collision, but
> it is also easily enough avoided.
Ok, I'll also add a note that ioctl number 10 should be reserved.
- Ted
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