diff options
| author | David S. Miller | 2019-02-15 21:38:38 +0100 |
|---|---|---|
| committer | David S. Miller | 2019-02-15 21:38:38 +0100 |
| commit | 3313da8188cc346a205783c22c37e821b4b7016d (patch) | |
| tree | 5697cd985220def9bc2e35dfbb832dad04c2d051 /drivers/gpu/drm/i915/i915_gem.c | |
| parent | sfc: ensure recovery after allocation failures (diff) | |
| parent | Merge tag 'for-linus-20190215' of git://git.kernel.dk/linux-block (diff) | |
| download | kernel-qcow2-linux-3313da8188cc346a205783c22c37e821b4b7016d.tar.gz kernel-qcow2-linux-3313da8188cc346a205783c22c37e821b4b7016d.tar.xz kernel-qcow2-linux-3313da8188cc346a205783c22c37e821b4b7016d.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The netfilter conflicts were rather simple overlapping
changes.
However, the cls_tcindex.c stuff was a bit more complex.
On the 'net' side, Cong is fixing several races and memory
leaks. Whilst on the 'net-next' side we have Vlad adding
the rtnl-ness support.
What I've decided to do, in order to resolve this, is revert the
conversion over to using a workqueue that Cong did, bringing us back
to pure RCU. I did it this way because I believe that either Cong's
races don't apply with have Vlad did things, or Cong will have to
implement the race fix slightly differently.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 216f52b744a6..c882ea94172c 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1824,6 +1824,16 @@ i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, return 0; } +static inline bool +__vma_matches(struct vm_area_struct *vma, struct file *filp, + unsigned long addr, unsigned long size) +{ + if (vma->vm_file != filp) + return false; + + return vma->vm_start == addr && (vma->vm_end - vma->vm_start) == size; +} + /** * i915_gem_mmap_ioctl - Maps the contents of an object, returning the address * it is mapped to. @@ -1882,7 +1892,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, return -EINTR; } vma = find_vma(mm, addr); - if (vma) + if (vma && __vma_matches(vma, obj->base.filp, addr, args->size)) vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); else |