Re: [PATCH 1/3] IMA: move read/write counters into struct inode

[Eric Paris <eparis@redhat.com>]

On Mon, 2010-10-18 at 21:16 -0400, Eric Paris wrote:
> IMA currently alocated an inode integrity structure for every inode in
> core.  This stucture is about 120 bytes long.  Most files however
> (especially on a system which doesn't make use of IMA) will never need any
> of this space.  The problem is that if IMA is enabled we need to know
> information about the number of readers and the number of writers for every
> inode on the box.  At the moment we collect that information in the per
> inode iint structure and waste the rest of the space.  This patch moves those
> counters into the struct inode so we can eventually stop allocating an IMA
> integrity structure except when absolutely needed.
> 
> This patch does the minimum needed to move the location of the data.  Further
> cleanups, especially the location of counter updates, may still be possible.
> 
> Signed-off-by: Eric Paris <eparis@redhat.com>

Noone should apply this, it doesn't build on !CONFIG_IMA.  Notice my
extra ; on the end of the line   :(

> +static inline void ima_check_counters(struct inode *inode);
> +{
> +	return;
> +}
>  #endif /* CONFIG_IMA_H */
>  #endif /* _LINUX_IMA_H */