From: Akinobu Mita <akinobu.mita@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH] mm: fix misuse of debug_kmap_atomic
Date: Thu, 2 Apr 2009 16:01:26 +0900 [thread overview]
Message-ID: <20090402070126.GA3951@localhost.localdomain> (raw)
Commit 7ca43e7564679604d86e9ed834e7bbcffd8a4a3f (mm: use debug_kmap_atomic)
introduced some debug_kmap_atomic() in wrong places.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
---
diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index 5bc5d16..8126e8d 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -40,7 +40,6 @@ void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
debug_kmap_atomic(type);
- debug_kmap_atomic(type);
idx = type + KM_TYPE_NR*smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
BUG_ON(!pte_none(*(kmap_pte-idx)));
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index bff0c90..e331f77 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -39,6 +39,7 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
pagefault_disable();
+ debug_kmap_atomic(type);
idx = type + KM_TYPE_NR * smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
@@ -72,7 +73,6 @@ iounmap_atomic(void *kvaddr, enum km_type type)
unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
- debug_kmap_atomic(type);
/*
* Force other mappings to Oops if they'll try to access this pte
* without first remap it. Keeping stale mappings around is a bad idea
next reply other threads:[~2009-04-02 7:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-02 7:01 Akinobu Mita [this message]
2009-04-02 14:39 ` [tip:x86/urgent] x86, mm: fix misuse of debug_kmap_atomic Akinobu Mita
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