diff options
Diffstat (limited to 'Documentation/mm/balance.rst')
| -rw-r--r-- | Documentation/mm/balance.rst | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/Documentation/mm/balance.rst b/Documentation/mm/balance.rst index 6a1fadf3e173..c4962c89a7f5 100644 --- a/Documentation/mm/balance.rst +++ b/Documentation/mm/balance.rst @@ -1,12 +1,10 @@ -.. _balance: - ================ Memory Balancing ================ Started Jan 2000 by Kanoj Sarcar <kanoj@sgi.com> -Memory balancing is needed for !__GFP_ATOMIC and !__GFP_KSWAPD_RECLAIM as +Memory balancing is needed for !__GFP_HIGH and !__GFP_KSWAPD_RECLAIM as well as for non __GFP_IO allocations. The first reason why a caller may avoid reclaim is that the caller can not @@ -83,7 +81,7 @@ Page stealing from process memory and shm is done if stealing the page would alleviate memory pressure on any zone in the page's node that has fallen below its watermark. -watemark[WMARK_MIN/WMARK_LOW/WMARK_HIGH]/low_on_memory/zone_wake_kswapd: These +watermark[WMARK_MIN/WMARK_LOW/WMARK_HIGH]/low_on_memory/zone_wake_kswapd: These are per-zone fields, used to determine when a zone needs to be balanced. When the number of pages falls below watermark[WMARK_MIN], the hysteric field low_on_memory gets set. This stays set till the number of free pages becomes |