[PATCH] Documentation/sysctl/vm.txt update

[Thayne Harbaugh]

Now that 2.4.9 is well behind us, it's time to update
Documentation/sysctl/vm.txt.

Thanks

--- linux-2.4.22/Documentation/sysctl/vm.txt	2002-11-28 16:53:08.000000000 -0700
+++ linux-2.4.22-bs/Documentation/sysctl/vm.txt	2003-11-12 17:35:11.000000000 -0700
@@ -18,13 +18,10 @@
 
 Currently, these files are in /proc/sys/vm:
 - bdflush
-- buffermem
-- freepages
 - kswapd
 - max_map_count
 - overcommit_memory
 - page-cluster
-- pagecache
 - pagetable_cache
 
 ==============================================================
@@ -102,38 +99,6 @@
 of buffer cache that is dirty which will stop bdflush.
 The default is 20%, the miniumum is 0%, and the maxiumum is 100%.
 ==============================================================
-buffermem:
-
-The three values in this file correspond to the values in
-the struct buffer_mem. It controls how much memory should
-be used for buffer memory. The percentage is calculated
-as a percentage of total system memory.
-
-The values are:
-min_percent	-- this is the minimum percentage of memory
-		   that should be spent on buffer memory
-borrow_percent  -- UNUSED
-max_percent     -- UNUSED
-
-==============================================================
-freepages:
-
-This file contains the values in the struct freepages. That
-struct contains three members: min, low and high.
-
-The meaning of the numbers is:
-
-freepages.min	When the number of free pages in the system
-		reaches this number, only the kernel can
-		allocate more memory.
-freepages.low	If the number of free pages gets below this
-		point, the kernel starts swapping aggressively.
-freepages.high	The kernel tries to keep up to this amount of
-		memory free; if memory comes below this point,
-		the kernel gently starts swapping in the hopes
-		that it never has to do real aggressive swapping.
-
-==============================================================
 
 kswapd:
 
@@ -208,24 +173,6 @@
 
 ==============================================================
 
-pagecache:
-
-This file does exactly the same as buffermem, only this
-file controls the struct page_cache, and thus controls
-the amount of memory used for the page cache.
-
-In 2.2, the page cache is used for 3 main purposes:
-- caching read() data from files
-- caching mmap()ed data and executable files
-- swap cache
-
-When your system is both deep in swap and high on cache,
-it probably means that a lot of the swapped data is being
-cached, making for more efficient swapping than possible
-with the 2.0 kernel.
-
-==============================================================
-
 pagetable_cache:
 
 The kernel keeps a number of page tables in a per-processor

-- 
Thayne Harbaugh
Linux Networx

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