Messages in this thread | | | Date | Mon, 6 Apr 2020 10:24:44 -0700 | From | Matthew Wilcox <> | Subject | Re: [PATCH] mm: Add kvfree_sensitive() for freeing sensitive data objects |
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On Mon, Apr 06, 2020 at 10:10:20AM -0700, Joe Perches wrote: > On Mon, 2020-04-06 at 17:26 +0100, David Howells wrote: > > Joe Perches <joe@perches.com> wrote: > > > > > While I agree with Linus about the __ prefix, > > > the z is pretty common and symmetric to all > > > the <foo>zalloc uses. > > > > > > And if _sensitive is actually used, it'd be > > > good to do a s/kzfree/kfree_sensitive/ one day > > > sooner than later. > > > > How much overhead would it be to always use kvfree_sensitive() and never have > > a kfree_sensitive()? > > Another possibility: > > Add yet another alloc flag like __GFP_SENSITIVE > and have kfree operate on that and not have a > kfree_sensitive at all.
kfree() doesn't take GFP flags.
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