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dma-buf: Move dma_buf_mmap_internal() to dynamic locking specification

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All dma-buf functions has been moved to dynamic locking specification
The dma_buf_mmap_internal() was missed out by accident. Take reservation
lock around file mapping operation to adhere the common locking convention.

Reported-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221110201349.351294-2-dmitry.osipenko@collabora.com
This commit is contained in:
Dmitry Osipenko 2022-11-10 23:13:44 +03:00
parent 9df38728f7
commit 8526e97364
1 changed files with 6 additions and 1 deletions
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7
drivers/dma-buf/dma-buf.c
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@ -129,6 +129,7 @@ static struct file_system_type dma_buf_fs_type = {
static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma)
{
struct dma_buf *dmabuf;
int ret;
if (!is_dma_buf_file(file))
return -EINVAL;
@ -144,7 +145,11 @@ static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma)
dmabuf->size >> PAGE_SHIFT)
return -EINVAL;
return dmabuf->ops->mmap(dmabuf, vma);
dma_resv_lock(dmabuf->resv, NULL);
ret = dmabuf->ops->mmap(dmabuf, vma);
dma_resv_unlock(dmabuf->resv);
return ret;
}
static loff_t dma_buf_llseek(struct file *file, loff_t offset, int whence)