linux-kernel - [PATCH] kho: test: clean up residual memory upon test

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Message-ID: <20260107022427.4114424-1-longwei27@huawei.com>
Date: Wed, 7 Jan 2026 10:24:27 +0800
From: l00580197 <longwei27@...wei.com>
To: Alexander Graf <graf@...zon.com>, Mike Rapoport <rppt@...nel.org>, Pasha
 Tatashin <pasha.tatashin@...een.com>
CC: Pratyush Yadav <pratyush@...nel.org>, <kexec@...ts.infradead.org>,
	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
	<hewenliang4@...wei.com>, Long Wei <longwei27@...wei.com>
Subject: [PATCH] kho: test: clean up residual memory upon test_kho module unload

From: Long Wei <longwei27@...wei.com>

During the initialization phase, the test_kho module invokes the
kho_preserve_folio function, which internally configures bitmaps
within kho_mem_track and establishes chunk linked lists in KHO.
Upon unloading the test_kho module, it is necessary to clean up
these states.

Signed-off-by: Long Wei <longwei27@...wei.com>
---
 lib/test_kho.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/test_kho.c b/lib/test_kho.c
index 47de56280795..69230da5a056 100644
--- a/lib/test_kho.c
+++ b/lib/test_kho.c
@@ -339,11 +339,15 @@ module_init(kho_test_init);
 
 static void kho_test_cleanup(void)
 {
+	/* unpreserve and free the data stored in folios */
+	kho_test_unpreserve_data(&kho_test_state);
 	for (int i = 0; i < kho_test_state.nr_folios; i++)
 		folio_put(kho_test_state.folios[i]);
 
 	kvfree(kho_test_state.folios);
-	vfree(kho_test_state.folios_info);
+
+	/* Unpreserve and release the FDT folio */
+	kho_unpreserve_folio(kho_test_state.fdt);
 	folio_put(kho_test_state.fdt);
 }
 
-- 
2.43.0