[PATCH v2] UBIFS: compute KSA size and store in superblock

[Joel Reardon]

> You need to validate that:
>
> 1. if use_ubifsec is true, then ksa_lebs is not zero.
> 2. ksa_lebs is sane - not too small, not too large.
>

Will add an assert and a dbg check function.


> > diff --git a/fs/ubifs/ubifs-media.h b/fs/ubifs/ubifs-media.h
> > index 90f348c..1dda25d 100644
> > --- a/fs/ubifs/ubifs-media.h
> > +++ b/fs/ubifs/ubifs-media.h
> > @@ -618,10 +618,13 @@ struct ubifs_pad_node {
> >   * @rp_uid: reserve pool UID
> >   * @rp_gid: reserve pool GID
> >   * @rp_size: size of the reserved pool in bytes
> > - * @padding2: reserved for future, zeroes
>
> Do not remove this comment.
>

I only moved it, new fields were added to the struct and it was not longer
in the correct place in the comment.

> >   * @time_gran: time granularity in nanoseconds
> >   * @uuid: UUID generated when the file system image was created
> >   * @ro_compat_version: UBIFS R/O compatibility version
> > + * @crypto_lebs: number of LEBS being used to store keys
> > + * @use_ubifsec: the LSB signifies whether the file system should use secure
> > + *		 deletion
> > + * @padding2: reserved for future, zeroes
> >   */


Cheers,
Joel Reardon