Signed-off-by: Eric Engestrom <eric@xxxxxxxxxxxx> --- Documentation/vm/transhuge.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt index d9cb65c..2f383f6 100644 --- a/Documentation/vm/transhuge.txt +++ b/Documentation/vm/transhuge.txt @@ -340,7 +340,7 @@ unaffected. libhugetlbfs will also work fine as usual. == Graceful fallback == -Code walking pagetables but unware about huge pmds can simply call +Code walking pagetables but unaware about huge pmds can simply call split_huge_pmd(vma, pmd, addr) where the pmd is the one returned by pmd_offset. It's trivial to make the code transparent hugepage aware by just grepping for "pmd_offset" and adding split_huge_pmd where @@ -414,7 +414,7 @@ tracking. The alternative is alter ->_mapcount in all subpages on each map/unmap of the whole compound page. We set PG_double_map when a PMD of the page got split for the first time, -but still have PMD mapping. The addtional references go away with last +but still have PMD mapping. The additional references go away with last compound_mapcount. split_huge_page internally has to distribute the refcounts in the head @@ -433,7 +433,7 @@ We safe against physical memory scanners too: the only legitimate way scanner can get reference to a page is get_page_unless_zero(). All tail pages has zero ->_count until atomic_add(). It prevent scanner -from geting reference to tail page up to the point. After the atomic_add() +from getting reference to tail page up to the point. After the atomic_add() we don't care about ->_count value. We already known how many references with should uncharge from head page. -- 2.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
