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authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>2005-09-03 15:54:57 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:05:45 -0700
commit9b4ee40ebbbaf3f8c775b023d89ceedda1167d79 (patch)
treee227c96cf51beaa942fefa64277618e5cfc71217 /include/asm-um
parent4944e76d81801b8e60ed3e7789443f210c16ed65 (diff)
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op-kernel-dev-9b4ee40ebbbaf3f8c775b023d89ceedda1167d79.tar.gz
[PATCH] mm: correct _PAGE_FILE comment
_PAGE_FILE does not indicate whether a file is in page / swap cache, it is set just for non-linear PTE's. Correct the comment for i386, x86_64, UML. Also clearify _PAGE_NONE. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-um')
-rw-r--r--include/asm-um/pgtable.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index a880409..e9336f6 100644
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -16,13 +16,15 @@
#define _PAGE_PRESENT 0x001
#define _PAGE_NEWPAGE 0x002
-#define _PAGE_NEWPROT 0x004
-#define _PAGE_FILE 0x008 /* set:pagecache unset:swap */
-#define _PAGE_PROTNONE 0x010 /* If not present */
+#define _PAGE_NEWPROT 0x004
#define _PAGE_RW 0x020
#define _PAGE_USER 0x040
#define _PAGE_ACCESSED 0x080
#define _PAGE_DIRTY 0x100
+/* If _PAGE_PRESENT is clear, we use these: */
+#define _PAGE_FILE 0x008 /* nonlinear file mapping, saved PTE; unset:swap */
+#define _PAGE_PROTNONE 0x010 /* if the user mapped it with PROT_NONE;
+ pte_present gives true */
#ifdef CONFIG_3_LEVEL_PGTABLES
#include "asm/pgtable-3level.h"
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