lkml.org 
[lkml]   [2020]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] um: Call pgtable_pmd_page_dtor() in __pmd_free_tlb()
Date
Commit b2b29d6d0119 ("mm: account PMD tables like PTE tables") uncovered
a bug in uml, we forgot to call the destructor.
While we are here, give x a sane name.

Reported-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Co-developed-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
arch/um/include/asm/pgalloc.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h
index 5393e13e07e0..2bbf28cf3aa9 100644
--- a/arch/um/include/asm/pgalloc.h
+++ b/arch/um/include/asm/pgalloc.h
@@ -33,7 +33,13 @@ do { \
} while (0)

#ifdef CONFIG_3_LEVEL_PGTABLES
-#define __pmd_free_tlb(tlb,x, address) tlb_remove_page((tlb),virt_to_page(x))
+
+#define __pmd_free_tlb(tlb, pmd, address) \
+do { \
+ pgtable_pmd_page_dtor(virt_to_page(pmd)); \
+ tlb_remove_page((tlb),virt_to_page(pmd)); \
+} while (0) \
+
#endif

#endif
--
2.26.2
\
 
 \ /
  Last update: 2020-10-19 23:12    [W:0.055 / U:0.944 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site