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-rw-r--r--Documentation/sysctl/vm.txt11
1 files changed, 6 insertions, 5 deletions
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index 6fab2dcbb4d3..0ea5adbc5b16 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -233,8 +233,8 @@ These protections are added to score to judge whether this zone should be used
233for page allocation or should be reclaimed. 233for page allocation or should be reclaimed.
234 234
235In this example, if normal pages (index=2) are required to this DMA zone and 235In this example, if normal pages (index=2) are required to this DMA zone and
236pages_high is used for watermark, the kernel judges this zone should not be 236watermark[WMARK_HIGH] is used for watermark, the kernel judges this zone should
237used because pages_free(1355) is smaller than watermark + protection[2] 237not be used because pages_free(1355) is smaller than watermark + protection[2]
238(4 + 2004 = 2008). If this protection value is 0, this zone would be used for 238(4 + 2004 = 2008). If this protection value is 0, this zone would be used for
239normal page requirement. If requirement is DMA zone(index=0), protection[0] 239normal page requirement. If requirement is DMA zone(index=0), protection[0]
240(=0) is used. 240(=0) is used.
@@ -280,9 +280,10 @@ The default value is 65536.
280min_free_kbytes: 280min_free_kbytes:
281 281
282This is used to force the Linux VM to keep a minimum number 282This is used to force the Linux VM to keep a minimum number
283of kilobytes free. The VM uses this number to compute a pages_min 283of kilobytes free. The VM uses this number to compute a
284value for each lowmem zone in the system. Each lowmem zone gets 284watermark[WMARK_MIN] value for each lowmem zone in the system.
285a number of reserved free pages based proportionally on its size. 285Each lowmem zone gets a number of reserved free pages based
286proportionally on its size.
286 287
287Some minimal amount of memory is needed to satisfy PF_MEMALLOC 288Some minimal amount of memory is needed to satisfy PF_MEMALLOC
288allocations; if you set this to lower than 1024KB, your system will 289allocations; if you set this to lower than 1024KB, your system will