From 8db5142aad25fc076ba9e98de4fe375bdb7b8f12 Mon Sep 17 00:00:00 2001 From: Andrea Righi Date: Wed, 27 Oct 2010 15:33:31 -0700 Subject: [PATCH] --- yaml --- r: 218522 b: refs/heads/master c: abffc0207f12563f17bbde96e4cc0d9f3d7e2a53 h: refs/heads/master v: v3 --- [refs] | 2 +- trunk/Documentation/sysctl/vm.txt | 12 ++++++++---- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/[refs] b/[refs] index 157bf6b6c04a..e05d29a3bdea 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: e45c9effed903ba3fdbd6ef0498ee8989c35af0a +refs/heads/master: abffc0207f12563f17bbde96e4cc0d9f3d7e2a53 diff --git a/trunk/Documentation/sysctl/vm.txt b/trunk/Documentation/sysctl/vm.txt index b606c2c4dd37..30289fab86eb 100644 --- a/trunk/Documentation/sysctl/vm.txt +++ b/trunk/Documentation/sysctl/vm.txt @@ -80,8 +80,10 @@ dirty_background_bytes Contains the amount of dirty memory at which the pdflush background writeback daemon will start writeback. -If dirty_background_bytes is written, dirty_background_ratio becomes a function -of its value (dirty_background_bytes / the amount of dirtyable system memory). +Note: dirty_background_bytes is the counterpart of dirty_background_ratio. Only +one of them may be specified at a time. When one sysctl is written it is +immediately taken into account to evaluate the dirty memory limits and the +other appears as 0 when read. ============================================================== @@ -97,8 +99,10 @@ dirty_bytes Contains the amount of dirty memory at which a process generating disk writes will itself start writeback. -If dirty_bytes is written, dirty_ratio becomes a function of its value -(dirty_bytes / the amount of dirtyable system memory). +Note: dirty_bytes is the counterpart of dirty_ratio. Only one of them may be +specified at a time. When one sysctl is written it is immediately taken into +account to evaluate the dirty memory limits and the other appears as 0 when +read. Note: the minimum value allowed for dirty_bytes is two pages (in bytes); any value lower than this limit will be ignored and the old configuration will be