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Diffstat (limited to 'Documentation/mm/active_mm.rst')
| -rw-r--r-- | Documentation/mm/active_mm.rst | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/mm/active_mm.rst b/Documentation/mm/active_mm.rst index 6f8269c284ed..60d819d7d043 100644 --- a/Documentation/mm/active_mm.rst +++ b/Documentation/mm/active_mm.rst @@ -1,9 +1,13 @@ -.. _active_mm: - ========= Active MM ========= +Note, the mm_count refcount may no longer include the "lazy" users +(running tasks with ->active_mm == mm && ->mm == NULL) on kernels +with CONFIG_MMU_LAZY_TLB_REFCOUNT=n. Taking and releasing these lazy +references must be done with mmgrab_lazy_tlb() and mmdrop_lazy_tlb() +helpers, which abstract this config option. + :: List: linux-kernel @@ -88,4 +92,4 @@ Active MM and register state is separate, the alpha PALcode joins the two, and you need to switch both together). - (From http://marc.info/?l=linux-kernel&m=93337278602211&w=2) + (From https://lore.kernel.org/lkml/Pine.LNX.4.10.9907301410280.752-100000@penguin.transmeta.com/) |