commit b15d00b6af617251cc70a908df983e9aff57e169
author Andrea Arcangeli <aarcange@redhat.com> Thu Jan 13 15:46:59 2011 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> Thu Jan 13 17:32:43 2011 -0800
tree 0fd28ef8d3705505d5b84d495875e3837698b540
parent ba76149f47d8c939efa0acc07a191237af900471

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>

mm/mmap.c

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;
 }