Re: IMA policy search speedup

[James Morris]

On Tue, 18 Sep 2012, Kasatkin, Dmitry wrote:

> I looked to <linux/fs.h> and found that there is a possibility to to
> add additional flag for sb->s_flags.
> For example
> 
> #define MS_NOT_IMA              (1<<25) /* NOT_IMA */
> #define IS_I_NOT_IMA(inode)   __IS_FLG(inode, MS_NOT_IMA)
> 
> 
> Another way is to add additional dedicated integrity related member to
> the sb structure.
> struct super_block {
> ...
> #ifdef CONFIG_INTEGRITY
>       int s_integrity;
> #endif
> };
> 
> Obviously there are only few super blocks in the system and few bytes
> will not harm.

The flag seems better than adding a new struct member.  Why would you need 
an int for this?



- James
-- 
James Morris
<jmorris@xxxxxxxxx>
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