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authorWu Fengguang <fengguang.wu@intel.com>2009-06-16 15:32:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 19:47:38 -0700
commitc9ba78e226057a1c2f19671383c496df187c02b5 (patch)
tree8e28df19b0304fc58bb854d812661e628b7ac612 /Documentation/vm/pagemap.txt
parent177975495914efb372f7edee28ba9a0fdb754149 (diff)
downloadlinux-c9ba78e226057a1c2f19671383c496df187c02b5.tar.gz
pagemap: document clarifications
Some bit ranges were inclusive and some not. Fix them to be consistently inclusive. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Matt Mackall <mpm@selenic.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/vm/pagemap.txt')
-rw-r--r--Documentation/vm/pagemap.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/vm/pagemap.txt b/Documentation/vm/pagemap.txt
index ce72c0fe617..1f1e69f72fc 100644
--- a/Documentation/vm/pagemap.txt
+++ b/Documentation/vm/pagemap.txt
@@ -12,9 +12,9 @@ There are three components to pagemap:
value for each virtual page, containing the following data (from
fs/proc/task_mmu.c, above pagemap_read):
- * Bits 0-55 page frame number (PFN) if present
+ * Bits 0-54 page frame number (PFN) if present
* Bits 0-4 swap type if swapped
- * Bits 5-55 swap offset if swapped
+ * Bits 5-54 swap offset if swapped
* Bits 55-60 page shift (page size = 1<<page shift)
* Bit 61 reserved for future use
* Bit 62 page swapped
@@ -36,7 +36,7 @@ There are three components to pagemap:
* /proc/kpageflags. This file contains a 64-bit set of flags for each
page, indexed by PFN.
- The flags are (from fs/proc/proc_misc, above kpageflags_read):
+ The flags are (from fs/proc/page.c, above kpageflags_read):
0. LOCKED
1. ERROR