[PATCH] Documentation: add shmall documentation in sysctl/kernel.txt

[Carlos Alberto Lopez Perez]

Add missing documentation for shmall parameter in sysctl/kernel.txt

Signed-off-by: Carlos Alberto Lopez Perez <clopez@xxxxxxxxxx>
---
 Documentation/sysctl/kernel.txt |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 2907ba6..278b1fc 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -542,6 +542,19 @@ are doing anyway :)
 
 ==============================================================
 
+shmall:
+
+This parameter sets the total amount of shared memory pages that
+can be used system wide. Hence, SHMALL should always be at least
+ceil(shmmax/PAGE_SIZE).
+
+If you are not sure what the default PAGE_SIZE is on your Linux
+system, you can run the following command:
+
+# getconf PAGE_SIZE
+
+==============================================================
+
 shmmax:
 
 This value can be used to query and set the run time limit
-- 
1.7.10.4

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