Messages in this thread | | | Date | Mon, 26 Nov 2007 19:53:19 +0900 | From | "Joonwoo Park" <> | Subject | Re: [PATCH 4/4] atm/ambassador: kmalloc + memset conversion to kzalloc |
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2007/11/26, Robert P. J. Day <rpjday@crashcourse.ca>: > i realized that. but all you can say is that only amb_init() calls > setup_dev() *currently*. when you're not looking, someone else might > (for whatever reason) call setup_dev() from elsewhere, and *that* call > might not zero that memory area. > > IMHO, the only safe transforms of kmalloc+memset -> kzalloc are those > in which the flow of control is unmistakable and invariant. splitting > that across a function call seems like a dangerous thing to do. > (except, of course, in the case, where the kzalloc() is added inside > the function -- then all callers are entitled to simplify *their* > code. but that's different.) > > in any event, i just thought i'd point it out. if you're absolutely > sure there will never be another call to setup_dev() from somewhere > else, then, yes, it's safe. >
I understood your opinions. and partially agree with you. But isn't it a unfounded fear?
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