On Tue, Feb 28, 2012 at 03:59:25PM +0400, Dmitry Antipov wrote: > On 02/28/2012 01:44 PM, Dan Carpenter wrote: > >On Tue, Feb 28, 2012 at 01:33:59PM +0400, Dmitry Antipov wrote: > >> - Fix vmap() to return ZERO_SIZE_PTR if 0 pages are requested; > >> - fix __vmalloc_node_range() to return ZERO_SIZE_PTR if 0 bytes > >> are requested; > >> - fix __vunmap() to check passed pointer with ZERO_OR_NULL_PTR. > >> > > > >Why? > > 1) it was requested by the subsystem (co?)maintainer, see > http://lkml.org/lkml/2012/1/27/475; > 2) this looks to be a convenient way to trace/debug zero-size allocation > errors (although > I don't advocate it as a best way).
Could you include that in the changelog when the final version is ready? regards, dan carpenter
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