From: Mike Rapoport (IBM) <rppt@kernel.org>
Date: Mon, 4 Sep 2023 17:37:59 +0000 (+0300)
Subject: sparc64: add missing initialization of folio in tlb_batch_add()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f4b4f3ec1a310c3de9797271a9c06b7499470d69;p=linux.git

sparc64: add missing initialization of folio in tlb_batch_add()

Commit 1a10a44dfc1d ("sparc64: implement the new page table range API")
missed initialization of folio variable in tlb_batch_add() which causes
boot tests to crash.

Add missing initialization.

Link: https://lkml.kernel.org/r/20230904174350.GF3223@kernel.org
Fixes: 1a10a44dfc1d ("sparc64: implement the new page table range API")
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/arch/sparc/mm/tlb.c b/arch/sparc/mm/tlb.c
index 0d41c94ec3ac0..b44d79d778c71 100644
--- a/arch/sparc/mm/tlb.c
+++ b/arch/sparc/mm/tlb.c
@@ -128,6 +128,7 @@ void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
 			goto no_cache_flush;
 
 		/* A real file page? */
+		folio = page_folio(page);
 		mapping = folio_flush_mapping(folio);
 		if (!mapping)
 			goto no_cache_flush;