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I thought I read somewhere that put_user is assured to be semaphore protected and __put_user was not? I can't find where I read it but I would like someone to tell me I was not dreaming when I read that and to confirm it for me.
Location: Northeastern Michigan, where Carhartt is a Designer Label
Distribution: Slackware 32- & 64-bit Stable
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Perhaps at https://github.com/? Most of the discussions I've seen are found there. Also, the function is kernel level so I'd take a look-see in the kernel documentation maybe starting at http://kernel.org/doc/.
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