[Yaffs] Kernel panic in clear_inode when using yaffs as rootfs

[Charles Manning]

Thanx Andre

FYI: How this got broken: http://lwn.net/Articles/141982/

Makes it easy for OCFS2, breaks YAFFS. 

> -----Original Message-----
> From: Andre Renaud [mailto:andre at bluewatersys.com] 
> Sent: Monday, 14 November 2005 3:24 p.m.
> To: Charles Manning
> Cc: yaffs at stoneboat.aleph1.co.uk; manningc2 at actrix.gen.nz
> Subject: Re: [Yaffs] Kernel panic in clear_inode when using 
> yaffs as rootfs
> 
> Charles Manning wrote:
> > Is this only with yaffs as root or will stress also break non-root?
> 
> I think I found it, according to fs/inode.c:1039
>         if (op->delete_inode) {
>                 void (*delete)(struct inode *) = op->delete_inode;
>                 if (!is_bad_inode(inode))
>                         DQUOT_INIT(inode);
>                 /* Filesystems implementing their own
>                  * s_op->delete_inode are required to call
>                  * truncate_inode_pages and clear_inode()
>                  * internally */
>                 delete(inode);
>         } else {
>                 truncate_inode_pages(&inode->i_data, 0);
>                 clear_inode(inode);
>         }
> 
> However, yaffs_delete_inode does not call truncate_inode_pages.
> 
> The attached patch seems to resolve it.
> 
> Thanks,
> Andre
> 
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>        Andre Renaud                             Bluewater Systems Ltd
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