Re: [PATCH 09/16] iommu/iommufd: use page allocation function provided by iommu-pages.h

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Nov 29, 2023 at 04:59:43PM -0500, Pasha Tatashin wrote:
> On Tue, Nov 28, 2023 at 6:52 PM Jason Gunthorpe <jgg@xxxxxxxx> wrote:
> >
> > On Tue, Nov 28, 2023 at 08:49:31PM +0000, Pasha Tatashin wrote:
> > > Convert iommu/iommufd/* files to use the new page allocation functions
> > > provided in iommu-pages.h.
> > >
> > > Signed-off-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
> > > ---
> > >  drivers/iommu/iommufd/iova_bitmap.c | 4 ++--
> > >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > This is a short term allocation, it should not be counted, that is why
> > it is already not using GFP_KERNEL_ACCOUNT.
> 
> I made this change for completeness. I changed all calls to
> get_free_page/alloc_page etc under driver/iommu to use the
> iommu_alloc_* variants, this also helps future developers in this area
> to use the right allocation functions.
> The accounting is implemented using cheap per-cpu counters, so should
> not affect the performance, I think it is OK to keep them here.

Except it is a mis use of an API that should only be used for page
table memory :(

Jason




[Index of Archives]     [KVM Development]     [Libvirt Development]     [Libvirt Users]     [CentOS Virtualization]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [Kernel Newbies]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux