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| author | Andi Kleen <ak@suse.de> | 2005-11-05 17:25:53 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:55:13 -0800 |
| commit | 1dff7f3db5f045ccbfeca5bb00b0958a78501557 (patch) | |
| tree | f4bf00e22827bd586a5fa3939b660039a3c5b199 | |
| parent | 6004e1b7effcbb385a6b7c790e4b8008682cf679 (diff) | |
| download | kernel_samsung_smdk4412-1dff7f3db5f045ccbfeca5bb00b0958a78501557.zip kernel_samsung_smdk4412-1dff7f3db5f045ccbfeca5bb00b0958a78501557.tar.gz kernel_samsung_smdk4412-1dff7f3db5f045ccbfeca5bb00b0958a78501557.tar.bz2 | |
[PATCH] x86_64: Fix up outdated pfn_to_page comment
pfn_to_page really requires pfn_valid to be true now, no question.
Some people stumbled over it, but it was misleading and wrong.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/asm-x86_64/mmzone.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/include/asm-x86_64/mmzone.h b/include/asm-x86_64/mmzone.h index b40c661..8d48dc7 100644 --- a/include/asm-x86_64/mmzone.h +++ b/include/asm-x86_64/mmzone.h @@ -41,9 +41,7 @@ static inline __attribute__((pure)) int phys_to_nid(unsigned long addr) #define pfn_to_nid(pfn) phys_to_nid((unsigned long)(pfn) << PAGE_SHIFT) #define kvaddr_to_nid(kaddr) phys_to_nid(__pa(kaddr)) -/* AK: this currently doesn't deal with invalid addresses. We'll see - if the 2.5 kernel doesn't pass them - (2.4 used to). */ +/* Requires pfn_valid(pfn) to be true */ #define pfn_to_page(pfn) ({ \ int nid = phys_to_nid(((unsigned long)(pfn)) << PAGE_SHIFT); \ ((pfn) - node_start_pfn(nid)) + NODE_DATA(nid)->node_mem_map; \ |