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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-20 15:36:52 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-20 15:36:52 +1000 |
| commit | 880102e78547c1db158a17e36cf0cdd98e7ad710 (patch) | |
| tree | 3fff9cc54c44dafe275cfabefb96c589e08d971d /drivers/xen/gntalloc.c | |
| parent | 3d07f0e83d4323d2cd45cc583f7cf1957aca3cac (diff) | |
| parent | 39ab05c8e0b519ff0a04a869f065746e6e8c3d95 (diff) | |
Merge remote branch 'origin/master' into merge
Manual merge of arch/powerpc/kernel/smp.c and add missing scheduler_ipi()
call to arch/powerpc/platforms/cell/interrupt.c
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/xen/gntalloc.c')
| -rw-r--r-- | drivers/xen/gntalloc.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c index a7ffdfe19fc9..f6832f46aea4 100644 --- a/drivers/xen/gntalloc.c +++ b/drivers/xen/gntalloc.c @@ -427,6 +427,17 @@ static long gntalloc_ioctl(struct file *filp, unsigned int cmd, return 0; } +static void gntalloc_vma_open(struct vm_area_struct *vma) +{ + struct gntalloc_gref *gref = vma->vm_private_data; + if (!gref) + return; + + spin_lock(&gref_lock); + gref->users++; + spin_unlock(&gref_lock); +} + static void gntalloc_vma_close(struct vm_area_struct *vma) { struct gntalloc_gref *gref = vma->vm_private_data; @@ -441,6 +452,7 @@ static void gntalloc_vma_close(struct vm_area_struct *vma) } static struct vm_operations_struct gntalloc_vmops = { + .open = gntalloc_vma_open, .close = gntalloc_vma_close, }; @@ -471,8 +483,6 @@ static int gntalloc_mmap(struct file *filp, struct vm_area_struct *vma) vma->vm_private_data = gref; vma->vm_flags |= VM_RESERVED; - vma->vm_flags |= VM_DONTCOPY; - vma->vm_flags |= VM_PFNMAP | VM_PFN_AT_MMAP; vma->vm_ops = &gntalloc_vmops; |