netdev - [PATCH 08/13] i915: Convert i915_gpu_error to use a folio

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Message-Id: <20230621164557.3510324-9-willy@infradead.org>
Date: Wed, 21 Jun 2023 17:45:52 +0100
From: "Matthew Wilcox (Oracle)" <willy@...radead.org>
To: linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	intel-gfx@...ts.freedesktop.org,
	linux-afs@...ts.infradead.org,
	linux-nfs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH 08/13] i915: Convert i915_gpu_error to use a folio_batch

Remove one of the last remaining users of pagevec.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 drivers/gpu/drm/i915/i915_gpu_error.c | 50 +++++++++++++--------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index ec368e700235..0c38bfb60c9a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -187,64 +187,64 @@ i915_error_printer(struct drm_i915_error_state_buf *e)
 }
 
 /* single threaded page allocator with a reserved stash for emergencies */
-static void pool_fini(struct pagevec *pv)
+static void pool_fini(struct folio_batch *fbatch)
 {
-	pagevec_release(pv);
+	folio_batch_release(fbatch);
 }
 
-static int pool_refill(struct pagevec *pv, gfp_t gfp)
+static int pool_refill(struct folio_batch *fbatch, gfp_t gfp)
 {
-	while (pagevec_space(pv)) {
-		struct page *p;
+	while (folio_batch_space(fbatch)) {
+		struct folio *folio;
 
-		p = alloc_page(gfp);
-		if (!p)
+		folio = folio_alloc(gfp, 0);
+		if (!folio)
 			return -ENOMEM;
 
-		pagevec_add(pv, p);
+		folio_batch_add(fbatch, folio);
 	}
 
 	return 0;
 }
 
-static int pool_init(struct pagevec *pv, gfp_t gfp)
+static int pool_init(struct folio_batch *fbatch, gfp_t gfp)
 {
 	int err;
 
-	pagevec_init(pv);
+	folio_batch_init(fbatch);
 
-	err = pool_refill(pv, gfp);
+	err = pool_refill(fbatch, gfp);
 	if (err)
-		pool_fini(pv);
+		pool_fini(fbatch);
 
 	return err;
 }
 
-static void *pool_alloc(struct pagevec *pv, gfp_t gfp)
+static void *pool_alloc(struct folio_batch *fbatch, gfp_t gfp)
 {
-	struct page *p;
+	struct folio *folio;
 
-	p = alloc_page(gfp);
-	if (!p && pagevec_count(pv))
-		p = pv->pages[--pv->nr];
+	folio = folio_alloc(gfp, 0);
+	if (!folio && folio_batch_count(fbatch))
+		folio = fbatch->folios[--fbatch->nr];
 
-	return p ? page_address(p) : NULL;
+	return folio ? folio_address(folio) : NULL;
 }
 
-static void pool_free(struct pagevec *pv, void *addr)
+static void pool_free(struct folio_batch *fbatch, void *addr)
 {
-	struct page *p = virt_to_page(addr);
+	struct folio *folio = virt_to_folio(addr);
 
-	if (pagevec_space(pv))
-		pagevec_add(pv, p);
+	if (folio_batch_space(fbatch))
+		folio_batch_add(fbatch, folio);
 	else
-		__free_page(p);
+		folio_put(folio);
 }
 
 #ifdef CONFIG_DRM_I915_COMPRESS_ERROR
 
 struct i915_vma_compress {
-	struct pagevec pool;
+	struct folio_batch pool;
 	struct z_stream_s zstream;
 	void *tmp;
 };
@@ -381,7 +381,7 @@ static void err_compression_marker(struct drm_i915_error_state_buf *m)
 #else
 
 struct i915_vma_compress {
-	struct pagevec pool;
+	struct folio_batch pool;
 };
 
 static bool compress_init(struct i915_vma_compress *c)
-- 
2.39.2