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

rajman mekaco
2012-05-10T16:48:48Z

> 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.
>