Re: [PATCH] /proc/locks bugfix

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri Apr 21 2000 - 17:37:23 EST


> The file locking code isn't performance critical. But yes, the code only
> sleeps in very specific places, which are while the semaphore either
> isn't held, or is dropped while we sleep, and the code then restarts
> its scan if we did have to block.
>
> > I've always replaced lock_kernel() with one spinlock.
>
> or, presumably, a lot of spinlocks -- I did think about making the

The 2.3.9x file locking code is fairly broken anyway. Actually going over
it with a large pickaxe wouldnt do any harm. Putting in resource limits
and fixing the N^2 and worse algorithms would also help no end.

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