Re: [PATCH 1/6] mlock: only hold mmap_sem in shared mode whenfaulting in pages

[Michel Lespinasse]

On Tue, Dec 14, 2010 at 7:43 AM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> Without _any_ at all of the crappy "rwsem_contended()" or the stupid
> constants, we hold it only for reading, _and_ we drop it for any
> actual IO. So the semaphore is held only for actual CPU intensive
> cases. We're talking a reduction from minutes to milliseconds.

It's actually still several seconds for a large enough mlock from page cache.

But yes, I agree it'll do fine for now :)

-- 
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.
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