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Date: Mon, 30 Apr 2012 17:34:45 -0700 From: Yinghai Lu <yinghai@...nel.org> To: Bjorn Helgaas <bhelgaas@...gle.com> Cc: Jesse Barnes <jbarnes@...tuousgeek.org>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Tony Luck <tony.luck@...el.com>, David Miller <davem@...emloft.net>, x86 <x86@...nel.org>, Dominik Brodowski <linux@...inikbrodowski.net>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org Subject: Re: [PATCH -v11 05/30] PCI: Add busn_res operation functions On Mon, Apr 30, 2012 at 4:29 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote: > On Sun, Mar 18, 2012 at 11:42 PM, Yinghai Lu <yinghai@...nel.org> wrote: >> +void pci_bus_update_busn_res_end(struct pci_bus *b, int bus_max) >> +{ >> + struct resource *res = &b->busn_res; >> + struct resource old_res = *res; >> + >> + res->end = bus_max; > > I've mentioned before that I'm not comfortable with updating the > struct resource after it's been inserted into the tree. If you want > to do an in-place update, I think you need to add a new interface in > kernel/resource.c so it can make sure the resource tree remains > consistent. ok, will add one function in kernel/resource.c to make sure that end could be updated safely by checking parent and children. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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