[Devel] Re: [PATCH 2/2] move unneeded data to initdata section

[Eric W. Biederman]

Sam Ravnborg <sam at ravnborg.org> writes:

> On Thu, Nov 15, 2007 at 05:42:04PM +0300, Denis V. Lunev wrote:
>> 
>> nothing is discarded after module load. Though, I can be wrong. Could
>> you point me to the exact place?
> If __initdata is not discarded after module load then we should do it.
> There is no reason to waste __initdata RAM when the module is loaded.

Down at the bottom of sys_init_module we have:

	/* Drop initial reference. */
	module_put(mod);
	unwind_remove_table(mod->unwind_info, 1);

	module_free(mod, mod->module_init);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	mod->module_init = NULL;
	mod->init_size = 0;
	mod->init_text_size = 0;
	mutex_unlock(&module_mutex);

	return 0;

Which frees the memory for the .init sections.

Eric
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