Re: [V4L] races in v4l read + write in 2.4

[Alan Cox]

> Exactly for this reason I've made a patch, that takes a semaphore in read() 
> and write().

But you cant just go around taking semaphores blindly. Suppose you block in
the read method and a 2nd one blocks on the semaphore - its now unkillable
until the first moves on




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