On Fri, 28 Jun 2019 11:50:21 +0800
Gao Xiang <gaoxiang25@xxxxxxxxxx> wrote:
> Hi Yue,
>
> On 2019/6/28 11:42, Yue Hu wrote:
> > From: Yue Hu <huyue2@xxxxxxxxxx>
> >
> > Currently, we will check if inode layout is compression or inline if
> > the inode is special in fill_inode(). Also set ->i_mapping->a_ops for
> > it. That is pointless since the both modes won't be set for special
> > inode when creating EROFS filesystem image. So, let's avoid it.
> >
> > Signed-off-by: Yue Hu <huyue2@xxxxxxxxxx>
>
> Have you test this patch with some actual image with legacy mkfs since
> new mkfs framework have not supported special inode...
Hi Xiang,
I'm studying the testing :)
However, already check the code handling for special inode in leagcy mkfs as below:
```c
break;
case EROFS_FT_BLKDEV:
case EROFS_FT_CHRDEV:
case EROFS_FT_FIFO:
case EROFS_FT_SOCK:
mkfs_rank_inode(d);
break;
default:
erofs_err("inode[%s] file_type error =%d",
d->i_fullpath,
```
No special inode layout operations, so this change should be fine.
Thx.
>
> I think that is fine in priciple, however, in case to introduce some potential
> issues, I will test this patch later. I will give a Reviewed-by tag after I tested
> this patch.
Thanks.
>
> Thanks,
> Gao Xiang
>
> > ---
> > drivers/staging/erofs/inode.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/staging/erofs/inode.c b/drivers/staging/erofs/inode.c
> > index 1433f25..2fe0f6d 100644
> > --- a/drivers/staging/erofs/inode.c
> > +++ b/drivers/staging/erofs/inode.c
> > @@ -205,6 +205,7 @@ static int fill_inode(struct inode *inode, int isdir)
> > S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
> > inode->i_op = &erofs_generic_iops;
> > init_special_inode(inode, inode->i_mode, inode->i_rdev);
> > + goto out_unlock;
> > } else {
> > err = -EIO;
> > goto out_unlock;
> >
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