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-rw-r--r--Documentation/sysctl/vm.txt15
1 files changed, 10 insertions, 5 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 79a797eb3e87..1fbd4eb7b64a 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -119,8 +119,11 @@ other appears as 0 when read.
119 119
120dirty_background_ratio 120dirty_background_ratio
121 121
122Contains, as a percentage of total system memory, the number of pages at which 122Contains, as a percentage of total available memory that contains free pages
123the background kernel flusher threads will start writing out dirty data. 123and reclaimable pages, the number of pages at which the background kernel
124flusher threads will start writing out dirty data.
125
126The total avaiable memory is not equal to total system memory.
124 127
125============================================================== 128==============================================================
126 129
@@ -151,9 +154,11 @@ interval will be written out next time a flusher thread wakes up.
151 154
152dirty_ratio 155dirty_ratio
153 156
154Contains, as a percentage of total system memory, the number of pages at which 157Contains, as a percentage of total available memory that contains free pages
155a process which is generating disk writes will itself start writing out dirty 158and reclaimable pages, the number of pages at which a process which is
156data. 159generating disk writes will itself start writing out dirty data.
160
161The total avaiable memory is not equal to total system memory.
157 162
158============================================================== 163==============================================================
159 164