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| author |   Daniel De Graaf <dgdegra@tycho.nsa.gov> | 2011-11-28 11:49:11 -0500 |
|---|---|---|
| committer |   Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-12-16 11:26:10 -0500 |
| commit | 243082e0d59f169a1fa502f51ee5a820889fae93 (patch) | |
| tree | 8359afd781878ca4e75ca34f1cd328f469815f5d /drivers/xen/Makefile | |
| parent | xen/gntalloc: release grant references on page free (diff) | |
| download | linux-dev-243082e0d59f169a1fa502f51ee5a820889fae93.tar.xz linux-dev-243082e0d59f169a1fa502f51ee5a820889fae93.zip | |
xen/gntalloc: fix reference counts on multi-page mappings
When a multi-page mapping of gntalloc is created, the reference counts
of all pages in the vma are incremented. However, the vma open/close
operations only adjusted the reference count of the first page in the
mapping, leaking the other pages. Store a struct in the vm_private_data
to track the original page count to properly free the pages when the
last reference to the vma is closed.
Reported-by: Anil Madhavapeddy <anil@recoil.org>
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen/Makefile')
0 files changed, 0 insertions, 0 deletions