Re: [PATCH 0/4] IMA: making i_readcount a first class inode citizen

[Eric Paris]

On Thu, 2010-10-28 at 15:29 -0700, Linus Torvalds wrote:
> On Thu, Oct 28, 2010 at 3:24 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> >
> > Why the wrapper functions and locking? Why not an atomic variable like
> > i_writecount?
> 
> Indeed. With moving this more into the VFS, let's just make sure it
> looks like i_writecount as much as possible.

My thought was that the IMA read/write checks should happen AFTER the
i_writecount and i_readcount counters were updated.  Thus even if we
raced with another task we can rest assured that the other task would
catch the situation we missed....

-Eric

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