Re: [RFC] [PATCH 5/8] inode-diet: Eliminate i_blksize and use a per-superblock default

[Avi Kivity <avi@argo.co.il>]

Theodore Tso wrote:
>
> This eliminates the i_blksize field from struct inode and uses default
> value in super->s_blksize.  Filesystems that want to provide a
> per-inode st_blksize can do so by providing their own getattr routine
> instead of using the generic_fillattr() function.
>

> Index: linux-2.6.17/include/linux/nfsd/nfsfh.h
> ===================================================================
> --- linux-2.6.17.orig/include/linux/nfsd/nfsfh.h        2006-06-18 
> 19:37:14.000000000 -0400
> +++ linux-2.6.17/include/linux/nfsd/nfsfh.h     2006-06-18 
> 19:53:54.000000000 -0400
> @@ -270,8 +270,8 @@
>         fhp->fh_post_uid        = inode->i_uid;
>         fhp->fh_post_gid        = inode->i_gid;
>         fhp->fh_post_size       = inode->i_size;
> -       if (inode->i_blksize) {
> -               fhp->fh_post_blksize    = inode->i_blksize;
> +       if (inode->i_sb->s_blksize) {
> +               fhp->fh_post_blksize    = inode->i_sb->s_blksize;
>                 fhp->fh_post_blocks     = inode->i_blocks;
>         } else {
>                 fhp->fh_post_blksize    = BLOCK_SIZE;
>

Isn't this a behavioral change?  If a filesystem chooses to provide 
i_blksize via a getattr method, it will not show on nfs mounts.

-- 
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