Re: [PATCH 1/1] mlock: split the shmlock_user_lock spinlock into peruser_struct spinlock

From: rajman mekaco
Date: Thu May 10 2012 - 12:48:44 EST

> If 2 different user-mode processes executing on 2 CPUs under 2 different
> users want to access the same shared memory through the

One correction:
This will happen even for different shared memory as the lock is global.
This fact just increases the relevance of this patch, dont you think ?

> shmctl(SHM_LOCK) / shmget(SHM_HUGETLB) / usr_shm_lock
> primitives, they could compete/spin even though their user_structs
> are different.
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