Messages in this thread | | | Subject | Re: [PATCH] Document kfree and vfree NULL usage | From | Pekka Enberg <> | Date | Sun, 28 Nov 2004 10:00:22 +0200 |
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On Sat, Nov 27, 2004 at 04:26:00PM +0200, Pekka Enberg wrote: > > This patch adds comments for kfree() and vfree() stating that both accept > > NULL pointers. I audited vfree() callers and there seems to be lots of > > confusion over this in the kernel.
On Sat, 2004-11-27 at 23:39 +0000, John Levon wrote: > Erm, are you sure about this? Somebody had to patch OProfile because > vfree() didn't like NULL value being passed in. When did this change?
Yes, I am sure. vfree() calls __vunmap() which returns immediately if the passed pointer is NULL. I don't know when this changed.
Pekka
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