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From: Jeremy Kerr on 7 Jul 2010 21:20
Hi Arnd,

> The default for llseek is changing, so we need
> explicit operations everywhere.

Looks good, but:

> @@ -2151,7 +2166,7 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
> static const struct file_operations spufs_ibox_info_fops = {
> .open = spufs_info_open,
> .read = spufs_ibox_info_read,
> - .llseek = generic_file_llseek,
> + .llseek = no_llseek,
> };
>
> static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
> @@ -2194,7 +2209,7 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
> static const struct file_operations spufs_wbox_info_fops = {
> .open = spufs_info_open,
> .read = spufs_wbox_info_read,
> - .llseek = generic_file_llseek,
> + .llseek = no_llseek,
> };
>

Why the change in behaviour for the mbox info files?

Cheers,


Jeremy

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From: Arnd Bergmann on 8 Jul 2010 09:10
On Thursday 08 July 2010, Jeremy Kerr wrote:
> > @@ -2151,7 +2166,7 @@ static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
> > static const struct file_operations spufs_ibox_info_fops = {
> > .open = spufs_info_open,
> > .read = spufs_ibox_info_read,
> > - .llseek = generic_file_llseek,
> > + .llseek = no_llseek,
> > };
> >
> > static ssize_t __spufs_wbox_info_read(struct spu_context *ctx,
> > @@ -2194,7 +2209,7 @@ static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
> > static const struct file_operations spufs_wbox_info_fops = {
> > .open = spufs_info_open,
> > .read = spufs_wbox_info_read,
> > - .llseek = generic_file_llseek,
> > + .llseek = no_llseek,
> > };
> >
>
> Why the change in behaviour for the mbox info files?
>

D'oh, that wasn't intentional. I guess what must have happened is that I first
added generic_file_llseek to all file_operations in spufs and then made up my
mind and chose what I thought was correct in each case, which broke these.
Of course, these *_info_fops should be seekable.

Arnd
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