Messages in this thread Patch in this message | | | From | (Eric W. Biederman) | Date | Mon, 20 Sep 2010 00:21:36 -0700 | Subject | [PATCH 2/5] uio: Kill unused vma_count. |
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Remove the tracking of how many vmas are using in the uio memory mapping mode. The uio code doesn't use that information anywhere.
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> --- drivers/uio/uio.c | 16 ---------------- 1 files changed, 0 insertions(+), 16 deletions(-)
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 565559c..95f25ae 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -35,7 +35,6 @@ struct uio_device { atomic_t event; struct fasync_struct *async_queue; wait_queue_head_t wait; - int vma_count; struct uio_info *info; struct kobject *map_dir; struct kobject *portio_dir; @@ -599,18 +598,6 @@ static int uio_find_mem_index(struct vm_area_struct *vma) return -1; } -static void uio_vma_open(struct vm_area_struct *vma) -{ - struct uio_device *idev = vma->vm_private_data; - idev->vma_count++; -} - -static void uio_vma_close(struct vm_area_struct *vma) -{ - struct uio_device *idev = vma->vm_private_data; - idev->vma_count--; -} - static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct uio_device *idev = vma->vm_private_data; @@ -638,8 +625,6 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) } static const struct vm_operations_struct uio_vm_ops = { - .open = uio_vma_open, - .close = uio_vma_close, .fault = uio_vma_fault, }; @@ -665,7 +650,6 @@ static int uio_mmap_logical(struct vm_area_struct *vma) { vma->vm_flags |= VM_RESERVED; vma->vm_ops = &uio_vm_ops; - uio_vma_open(vma); return 0; } -- 1.7.2.2
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