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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-31 15:08:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-31 15:08:56 -0800
commitfc8744adc870a8d4366908221508bb113d8b72ee (patch)
tree755f4c4a1cc30567fde4e60c9cc5e6a889c360b0 /drivers
parent33bfad54b58cf05cfe6678c3ec9235d4bc8db4c2 (diff)
downloadop-kernel-dev-fc8744adc870a8d4366908221508bb113d8b72ee.zip
op-kernel-dev-fc8744adc870a8d4366908221508bb113d8b72ee.tar.gz
Stop playing silly games with the VM_ACCOUNT flag
The mmap_region() code would temporarily set the VM_ACCOUNT flag for anonymous shared mappings just to inform shmem_zero_setup() that it should enable accounting for the resulting shm object. It would then clear the flag after calling ->mmap (for the /dev/zero case) or doing shmem_zero_setup() (for the MAP_ANON case). This just resulted in vma merge issues, but also made for just unnecessary confusion. Use the already-existing VM_NORESERVE flag for this instead, and let shmem_{zero|file}_setup() just figure it out from that. This also happens to make it obvious that the new DRI2 GEM layer uses a non-reserving backing store for its object allocation - which is quite possibly not intentional. But since I didn't want to change semantics in this patch, I left it alone, and just updated the caller to use the new flag semantics. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/drm_gem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 9da5814..6915fb8 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -136,7 +136,7 @@ drm_gem_object_alloc(struct drm_device *dev, size_t size)
obj = kcalloc(1, sizeof(*obj), GFP_KERNEL);
obj->dev = dev;
- obj->filp = shmem_file_setup("drm mm object", size, 0);
+ obj->filp = shmem_file_setup("drm mm object", size, VM_NORESERVE);
if (IS_ERR(obj->filp)) {
kfree(obj);
return NULL;
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