diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 4556a12bd741..f2a5a122da4a 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -559,7 +559,7 @@ static struct file *dma_buf_getfile(struct dma_buf *dmabuf, int flags)
  * 2. Userspace passes this file-descriptors to all drivers it wants this buffer
  *    to share with: First the file descriptor is converted to a &dma_buf using
  *    dma_buf_get(). Then the buffer is attached to the device using
- *    dma_buf_attach().
+ *    dma_buf_attach_unlocked().
  *
  *    Up to this stage the exporter is still free to migrate or reallocate the
  *    backing storage.
@@ -569,8 +569,8 @@ static struct file *dma_buf_getfile(struct dma_buf *dmabuf, int flags)
  *    dma_buf_map_attachment() and dma_buf_unmap_attachment().
  *
  * 4. Once a driver is done with a shared buffer it needs to call
- *    dma_buf_detach() (after cleaning up any mappings) and then release the
- *    reference acquired with dma_buf_get() by calling dma_buf_put().
+ *    dma_buf_detach_unlocked() (after cleaning up any mappings) and then
+ *    release the reference acquired with dma_buf_get() by calling dma_buf_put().
  *
  * For the detailed semantics exporters are expected to implement see
  * &dma_buf_ops.
@@ -802,7 +802,7 @@ static struct sg_table * __map_dma_buf(struct dma_buf_attachment *attach,
  * @importer_priv:	[in]	importer private pointer for the attachment
  *
  * Returns struct dma_buf_attachment pointer for this attachment. Attachments
- * must be cleaned up by calling dma_buf_detach().
+ * must be cleaned up by calling dma_buf_detach_unlocked().
  *
  * Optionally this calls &dma_buf_ops.attach to allow device-specific attach
  * functionality.
@@ -858,8 +858,8 @@ dma_buf_dynamic_attach_unlocked(struct dma_buf *dmabuf, struct device *dev,
 	    dma_buf_is_dynamic(dmabuf)) {
 		struct sg_table *sgt;
 
+		dma_resv_lock(attach->dmabuf->resv, NULL);
 		if (dma_buf_is_dynamic(attach->dmabuf)) {
-			dma_resv_lock(attach->dmabuf->resv, NULL);
 			ret = dmabuf->ops->pin(attach);
 			if (ret)
 				goto err_unlock;
@@ -872,8 +872,7 @@ dma_buf_dynamic_attach_unlocked(struct dma_buf *dmabuf, struct device *dev,
 			ret = PTR_ERR(sgt);
 			goto err_unpin;
 		}
-		if (dma_buf_is_dynamic(attach->dmabuf))
-			dma_resv_unlock(attach->dmabuf->resv);
+		dma_resv_unlock(attach->dmabuf->resv);
 		attach->sgt = sgt;
 		attach->dir = DMA_BIDIRECTIONAL;
 	}
@@ -889,8 +888,7 @@ dma_buf_dynamic_attach_unlocked(struct dma_buf *dmabuf, struct device *dev,
 		dmabuf->ops->unpin(attach);
 
 err_unlock:
-	if (dma_buf_is_dynamic(attach->dmabuf))
-		dma_resv_unlock(attach->dmabuf->resv);
+	dma_resv_unlock(attach->dmabuf->resv);
 
 	dma_buf_detach_unlocked(dmabuf, attach);
 	return ERR_PTR(ret);
@@ -927,7 +925,7 @@ static void __unmap_dma_buf(struct dma_buf_attachment *attach,
  * @dmabuf:	[in]	buffer to detach from.
  * @attach:	[in]	attachment to be detached; is free'd after this call.
  *
- * Clean up a device attachment obtained by calling dma_buf_attach().
+ * Clean up a device attachment obtained by calling dma_buf_attach_unlocked().
  *
  * Optionally this calls &dma_buf_ops.detach for device-specific detach.
  */
@@ -937,21 +935,19 @@ void dma_buf_detach_unlocked(struct dma_buf *dmabuf,
 	if (WARN_ON(!dmabuf || !attach))
 		return;
 
+	dma_resv_lock(attach->dmabuf->resv, NULL);
+
 	if (attach->sgt) {
-		if (dma_buf_is_dynamic(attach->dmabuf))
-			dma_resv_lock(attach->dmabuf->resv, NULL);
 
 		__unmap_dma_buf(attach, attach->sgt, attach->dir);
 
-		if (dma_buf_is_dynamic(attach->dmabuf)) {
+		if (dma_buf_is_dynamic(attach->dmabuf))
 			dmabuf->ops->unpin(attach);
-			dma_resv_unlock(attach->dmabuf->resv);
-		}
 	}
-
-	dma_resv_lock(dmabuf->resv, NULL);
 	list_del(&attach->node);
+
 	dma_resv_unlock(dmabuf->resv);
+
 	if (dmabuf->ops->detach)
 		dmabuf->ops->detach(dmabuf, attach);
 
@@ -1011,7 +1007,7 @@ void dma_buf_unpin(struct dma_buf_attachment *attach)
 EXPORT_SYMBOL_NS_GPL(dma_buf_unpin, DMA_BUF);
 
 /**
- * dma_buf_map_attachment_unlocked - Returns the scatterlist table of the attachment;
+ * dma_buf_map_attachment - Returns the scatterlist table of the attachment;
  * mapped into _device_ address space. Is a wrapper for map_dma_buf() of the
  * dma_buf_ops.
  * @attach:	[in]	attachment whose scatterlist is to be returned
@@ -1030,10 +1026,11 @@ EXPORT_SYMBOL_NS_GPL(dma_buf_unpin, DMA_BUF);
  *
  * Important: Dynamic importers must wait for the exclusive fence of the struct
  * dma_resv attached to the DMA-BUF first.
+ *
+ * Importer is responsible for holding dmabuf's reservation lock.
  */
-struct sg_table *
-dma_buf_map_attachment_unlocked(struct dma_buf_attachment *attach,
-				enum dma_data_direction direction)
+struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *attach,
+					enum dma_data_direction direction)
 {
 	struct sg_table *sg_table;
 	int r;
@@ -1043,8 +1040,7 @@ dma_buf_map_attachment_unlocked(struct dma_buf_attachment *attach,
 	if (WARN_ON(!attach || !attach->dmabuf))
 		return ERR_PTR(-EINVAL);
 
-	if (dma_buf_attachment_is_dynamic(attach))
-		dma_resv_assert_held(attach->dmabuf->resv);
+	dma_resv_assert_held(attach->dmabuf->resv);
 
 	if (attach->sgt) {
 		/*
@@ -1059,7 +1055,6 @@ dma_buf_map_attachment_unlocked(struct dma_buf_attachment *attach,
 	}
 
 	if (dma_buf_is_dynamic(attach->dmabuf)) {
-		dma_resv_assert_held(attach->dmabuf->resv);
 		if (!IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY)) {
 			r = attach->dmabuf->ops->pin(attach);
 			if (r)
@@ -1099,10 +1094,38 @@ dma_buf_map_attachment_unlocked(struct dma_buf_attachment *attach,
 #endif /* CONFIG_DMA_API_DEBUG */
 	return sg_table;
 }
+EXPORT_SYMBOL_NS_GPL(dma_buf_map_attachment, DMA_BUF);
+
+/**
+ * dma_buf_map_attachment_unlocked - Returns the scatterlist table of the attachment;
+ * mapped into _device_ address space. Is a wrapper for map_dma_buf() of the
+ * dma_buf_ops.
+ * @attach:	[in]	attachment whose scatterlist is to be returned
+ * @direction:	[in]	direction of DMA transfer
+ *
+ * Unlocked variant of dma_buf_map_attachment().
+ */
+struct sg_table *
+dma_buf_map_attachment_unlocked(struct dma_buf_attachment *attach,
+				enum dma_data_direction direction)
+{
+	struct sg_table *sg_table;
+
+	might_sleep();
+
+	if (WARN_ON(!attach || !attach->dmabuf))
+		return ERR_PTR(-EINVAL);
+
+	dma_resv_lock(attach->dmabuf->resv, NULL);
+	sg_table = dma_buf_map_attachment(attach, direction);
+	dma_resv_unlock(attach->dmabuf->resv);
+
+	return sg_table;
+}
 EXPORT_SYMBOL_NS_GPL(dma_buf_map_attachment_unlocked, DMA_BUF);
 
 /**
- * dma_buf_unmap_attachment_unlocked - unmaps and decreases usecount of the buffer;might
+ * dma_buf_unmap_attachment - unmaps and decreases usecount of the buffer;might
  * deallocate the scatterlist associated. Is a wrapper for unmap_dma_buf() of
  * dma_buf_ops.
  * @attach:	[in]	attachment to unmap buffer from
@@ -1110,31 +1133,51 @@ EXPORT_SYMBOL_NS_GPL(dma_buf_map_attachment_unlocked, DMA_BUF);
  * @direction:  [in]    direction of DMA transfer
  *
  * This unmaps a DMA mapping for @attached obtained by dma_buf_map_attachment().
+ *
+ * Importer is responsible for holding dmabuf's reservation lock.
  */
-void dma_buf_unmap_attachment_unlocked(struct dma_buf_attachment *attach,
-				       struct sg_table *sg_table,
-				       enum dma_data_direction direction)
+void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
+			      struct sg_table *sg_table,
+			      enum dma_data_direction direction)
 {
 	might_sleep();
 
-	if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
-		return;
-
-	if (dma_buf_attachment_is_dynamic(attach))
-		dma_resv_assert_held(attach->dmabuf->resv);
+	dma_resv_assert_held(attach->dmabuf->resv);
 
 	if (attach->sgt == sg_table)
 		return;
 
-	if (dma_buf_is_dynamic(attach->dmabuf))
-		dma_resv_assert_held(attach->dmabuf->resv);
-
 	__unmap_dma_buf(attach, sg_table, direction);
 
 	if (dma_buf_is_dynamic(attach->dmabuf) &&
 	    !IS_ENABLED(CONFIG_DMABUF_MOVE_NOTIFY))
 		dma_buf_unpin(attach);
 }
+EXPORT_SYMBOL_NS_GPL(dma_buf_unmap_attachment, DMA_BUF);
+
+/**
+ * dma_buf_unmap_attachment_unlocked - unmaps and decreases usecount of the buffer;might
+ * deallocate the scatterlist associated. Is a wrapper for unmap_dma_buf() of
+ * dma_buf_ops.
+ * @attach:	[in]	attachment to unmap buffer from
+ * @sg_table:	[in]	scatterlist info of the buffer to unmap
+ * @direction:	[in]	direction of DMA transfer
+ *
+ * Unlocked variant of dma_buf_unmap_attachment().
+ */
+void dma_buf_unmap_attachment_unlocked(struct dma_buf_attachment *attach,
+				       struct sg_table *sg_table,
+				       enum dma_data_direction direction)
+{
+	might_sleep();
+
+	if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
+		return;
+
+	dma_resv_lock(attach->dmabuf->resv, NULL);
+	dma_buf_unmap_attachment(attach, sg_table, direction);
+	dma_resv_unlock(attach->dmabuf->resv);
+}
 EXPORT_SYMBOL_NS_GPL(dma_buf_unmap_attachment_unlocked, DMA_BUF);
 
 /**
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index ac1e2911b727..b1c455329023 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -885,7 +885,7 @@ static int amdgpu_ttm_backend_bind(struct ttm_device *bdev,
 			struct sg_table *sgt;
 
 			attach = gtt->gobj->import_attach;
-			sgt = dma_buf_map_attachment_unlocked(attach, DMA_BIDIRECTIONAL);
+			sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
 			if (IS_ERR(sgt))
 				return PTR_ERR(sgt);
 
@@ -1010,7 +1010,7 @@ static void amdgpu_ttm_backend_unbind(struct ttm_device *bdev,
 		struct dma_buf_attachment *attach;
 
 		attach = gtt->gobj->import_attach;
-		dma_buf_unmap_attachment_unlocked(attach, ttm->sg, DMA_BIDIRECTIONAL);
+		dma_buf_unmap_attachment(attach, ttm->sg, DMA_BIDIRECTIONAL);
 		ttm->sg = NULL;
 	}
 
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index cc54a5b1d6ae..276a74bc7fd1 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -241,8 +241,8 @@ static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
 
 	assert_object_held(obj);
 
-	pages = dma_buf_map_attachment_unlocked(obj->base.import_attach,
-						DMA_BIDIRECTIONAL);
+	pages = dma_buf_map_attachment(obj->base.import_attach,
+				       DMA_BIDIRECTIONAL);
 	if (IS_ERR(pages))
 		return PTR_ERR(pages);
 
@@ -270,8 +270,8 @@ static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
 static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj,
 					     struct sg_table *pages)
 {
-	dma_buf_unmap_attachment_unlocked(obj->base.import_attach, pages,
-					  DMA_BIDIRECTIONAL);
+	dma_buf_unmap_attachment(obj->base.import_attach, pages,
+				 DMA_BIDIRECTIONAL);
 }
 
 static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = {
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 389e9f157ca5..9fbef3aea7b1 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -331,7 +331,19 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915,
 			continue;
 		}
 
+		/*
+		 * dma_buf_unmap_attachment() requires reservation to be
+		 * locked. The imported GEM should share reservation lock,
+		 * so it's safe to take the lock.
+		 */
+		if (obj->base.import_attach)
+			i915_gem_object_lock(obj, NULL);
+
 		__i915_gem_object_pages_fini(obj);
+
+		if (obj->base.import_attach)
+			i915_gem_object_unlock(obj);
+
 		__i915_gem_free_object(obj);
 
 		/* But keep the pointer alive for RCU-protected lookups */
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index da2057569101..d48d534dc55c 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -46,7 +46,7 @@ struct dma_buf_ops {
 	/**
 	 * @attach:
 	 *
-	 * This is called from dma_buf_attach() to make sure that a given
+	 * This is called from dma_buf_attach_unlocked() to make sure that a given
 	 * &dma_buf_attachment.dev can access the provided &dma_buf. Exporters
 	 * which support buffer objects in special locations like VRAM or
 	 * device-specific carveout areas should check whether the buffer could
@@ -74,7 +74,7 @@ struct dma_buf_ops {
 	/**
 	 * @detach:
 	 *
-	 * This is called by dma_buf_detach() to release a &dma_buf_attachment.
+	 * This is called by dma_buf_detach_unlocked() to release a &dma_buf_attachment.
 	 * Provided so that exporters can clean up any housekeeping for an
 	 * &dma_buf_attachment.
 	 *
@@ -94,7 +94,7 @@ struct dma_buf_ops {
 	 * exclusive with @cache_sgt_mapping.
 	 *
 	 * This is called automatically for non-dynamic importers from
-	 * dma_buf_attach().
+	 * dma_buf_attach_unlocked().
 	 *
 	 * Note that similar to non-dynamic exporters in their @map_dma_buf
 	 * callback the driver must guarantee that the memory is available for
@@ -509,10 +509,10 @@ struct dma_buf_attach_ops {
  * and its user device(s). The list contains one attachment struct per device
  * attached to the buffer.
  *
- * An attachment is created by calling dma_buf_attach(), and released again by
- * calling dma_buf_detach(). The DMA mapping itself needed to initiate a
- * transfer is created by dma_buf_map_attachment() and freed again by calling
- * dma_buf_unmap_attachment().
+ * An attachment is created by calling dma_buf_attach_unlocked(), and released
+ * again by calling dma_buf_detach_unlocked(). The DMA mapping itself needed to
+ * initiate a transfer is created by dma_buf_map_attachment() and freed
+ * again by calling dma_buf_unmap_attachment().
  */
 struct dma_buf_attachment {
 	struct dma_buf *dmabuf;
@@ -626,6 +626,12 @@ void dma_buf_unmap_attachment_unlocked(struct dma_buf_attachment *,
 				       struct sg_table *,
 				       enum dma_data_direction);
 
+struct sg_table *dma_buf_map_attachment(struct dma_buf_attachment *,
+					enum dma_data_direction);
+void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
+			      struct sg_table *sg_table,
+			      enum dma_data_direction direction);
+
 void dma_buf_move_notify(struct dma_buf *dma_buf);
 int dma_buf_begin_cpu_access(struct dma_buf *dma_buf,
 			     enum dma_data_direction dir);
