thp: khugepaged vma merge
register in khugepaged if the vma grows.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/mmap.c b/mm/mmap.c
index 50a4aa0..753f44d 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -29,6 +29,7 @@
#include <linux/mmu_notifier.h>
#include <linux/perf_event.h>
#include <linux/audit.h>
+#include <linux/khugepaged.h>
#include <asm/uaccess.h>
#include <asm/cacheflush.h>
@@ -815,6 +816,7 @@
end, prev->vm_pgoff, NULL);
if (err)
return NULL;
+ khugepaged_enter_vma_merge(prev);
return prev;
}
@@ -833,6 +835,7 @@
next->vm_pgoff - pglen, NULL);
if (err)
return NULL;
+ khugepaged_enter_vma_merge(area);
return area;
}
@@ -1761,6 +1764,7 @@
}
}
vma_unlock_anon_vma(vma);
+ khugepaged_enter_vma_merge(vma);
return error;
}
#endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
@@ -1808,6 +1812,7 @@
}
}
vma_unlock_anon_vma(vma);
+ khugepaged_enter_vma_merge(vma);
return error;
}