Subject: [merged] mm-improve-the-description-for-dirty_background_ratio-dirty_ratio-sysctl.patch removed from -mm tree To: wenqing.lz@xxxxxxxxxx,rob@xxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Wed, 13 Nov 2013 12:39:38 -0800 The patch titled Subject: mm: improve the description for dirty_background_ratio/dirty_ratio sysctl has been removed from the -mm tree. Its filename was mm-improve-the-description-for-dirty_background_ratio-dirty_ratio-sysctl.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Zheng Liu <wenqing.lz@xxxxxxxxxx> Subject: mm: improve the description for dirty_background_ratio/dirty_ratio sysctl Now dirty_background_ratio/dirty_ratio contains a percentage of total avaiable memory, which contains free pages and reclaimable pages. The number of these pages is not equal to the number of total system memory. But they are described as a percentage of total system memory in Documentation/sysctl/vm.txt. So we need to fix them to avoid misunderstanding. Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx> Cc: Rob Landley <rob@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/sysctl/vm.txt | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff -puN Documentation/sysctl/vm.txt~mm-improve-the-description-for-dirty_background_ratio-dirty_ratio-sysctl Documentation/sysctl/vm.txt --- a/Documentation/sysctl/vm.txt~mm-improve-the-description-for-dirty_background_ratio-dirty_ratio-sysctl +++ a/Documentation/sysctl/vm.txt @@ -119,8 +119,11 @@ other appears as 0 when read. dirty_background_ratio -Contains, as a percentage of total system memory, the number of pages at which -the background kernel flusher threads will start writing out dirty data. +Contains, as a percentage of total available memory that contains free pages +and reclaimable pages, the number of pages at which the background kernel +flusher threads will start writing out dirty data. + +The total avaiable memory is not equal to total system memory. ============================================================== @@ -151,9 +154,11 @@ interval will be written out next time a dirty_ratio -Contains, as a percentage of total system memory, the number of pages at which -a process which is generating disk writes will itself start writing out dirty -data. +Contains, as a percentage of total available memory that contains free pages +and reclaimable pages, the number of pages at which a process which is +generating disk writes will itself start writing out dirty data. + +The total avaiable memory is not equal to total system memory. ============================================================== _ Patches currently in -mm which might be from wenqing.lz@xxxxxxxxxx are origin.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html