* Andy Lutomirski [off-list ref] wrote:

quoted

2)

More aggressively, we could just make it the _rule_ that the 
mm lock gets downgraded to read in mmap_region_helper(), no 
matter what.

From a quick look I *think* all the usage sites (including 
sys_aio_setup()) are fine with that unlocking - but I could 
be wrong.

They are.

Lets try that then - the ugliness of the current patch is 
certainly a problem.

Thanks,

	Ingo

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