linux-ext4 - [PATCH v1 09/14] mm: call pgmap->ops->page_free for DEVICE

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Date:   Tue, 24 Aug 2021 22:48:23 -0500
From:   Alex Sierra <alex.sierra@....com>
To:     akpm@...ux-foundation.org, Felix.Kuehling@....com,
        linux-mm@...ck.org, rcampbell@...dia.com,
        linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        hch@....de, jgg@...dia.com, jglisse@...hat.com
Subject: [PATCH v1 09/14] mm: call pgmap->ops->page_free for DEVICE_PUBLIC pages

Add MEMORY_DEVICE_PUBLIC case to free_zone_device_page callback.
Device public type memory case is now able to free its pages properly.

Signed-off-by: Alex Sierra <alex.sierra@....com>
---
 mm/memremap.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/mm/memremap.c b/mm/memremap.c
index 2c8898ed006f..b9a8ed089cc6 100644
--- a/mm/memremap.c
+++ b/mm/memremap.c
@@ -460,7 +460,7 @@ struct dev_pagemap *get_dev_pagemap(unsigned long pfn,
 EXPORT_SYMBOL_GPL(get_dev_pagemap);
 
 #ifdef CONFIG_DEV_PAGEMAP_OPS
-static void free_device_private_page(struct page *page)
+static void free_device_page(struct page *page)
 {
 
 	__ClearPageWaiters(page);
@@ -494,13 +494,14 @@ static void free_device_private_page(struct page *page)
 void free_zone_device_page(struct page *page)
 {
 	switch (page->pgmap->type) {
+	case MEMORY_DEVICE_PRIVATE:
+	case MEMORY_DEVICE_PUBLIC:
+		free_device_page(page);
+		return;
 	case MEMORY_DEVICE_FS_DAX:
 		/* notify page idle */
 		wake_up_var(&page->_refcount);
 		return;
-	case MEMORY_DEVICE_PRIVATE:
-		free_device_private_page(page);
-		return;
 	default:
 		return;
 	}
-- 
2.32.0