[PATCH] LSM: Make security_hook_heads a local variable.

Casey Schaufler wrote:

On 5/22/2017 12:50 PM, Igor Stoppa wrote:

quoted

On 22/05/17 18:09, Casey Schaufler wrote:

quoted

On 5/22/2017 7:03 AM, Christoph Hellwig wrote:

[...]

quoted

quoted

But even with those we can still chain
them together with a list with external linkage.

I gave up that approach in 2012. Too many unnecessary calls to
null functions, and massive function vectors with a tiny number
of non-null entries. From a data structure standpoint, it was
just wrong. The list scheme is exactly right for the task at
hand.

I understand this as a green light, for me to continue with the plan of
using LSM Hooks as example for making dynamically allocated data become
read-only, using also Tetsuo's patch (thanks, btw).

I still don't like the assumption that a structure of
N elements can be assumed to be the same as an array
of N elements.

I think we can use "enum" and call via index numbers while preserving
current "union" for type checking purpose.
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