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SubjectRe: [PATCH] ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode
On Sun, Mar 07, 2010 at 09:32:10PM +0100, Christian Borntraeger wrote:
> I have an x86_64 kernel with i386 userspace. e4defrag fails on the
> EXT4_IOC_MOVE_EXT ioctl because it is not wired up for the compat
> case. It seems that struct move_extent is compat save, only types
> with fixed widths are used:
> {
> __u32 reserved; /* should be zero */
> __u32 donor_fd; /* donor file descriptor */
> __u64 orig_start; /* logical start offset in block for orig */
> __u64 donor_start; /* logical start offset in block for donor */
> __u64 len; /* block length to be moved */
> __u64 moved_len; /* moved block length */
> };
>
> Lets just wire up EXT4_IOC_MOVE_EXT for the compat case.

Thanks, added to the ext4 patch queue.

- Ted


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