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authorAndrea Arcangeli <aarcange@redhat.com>2011-01-13 15:46:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 17:32:43 -0800
commitb15d00b6af617251cc70a908df983e9aff57e169 (patch)
tree0fd28ef8d3705505d5b84d495875e3837698b540 /mm/mmap.c
parentba76149f47d8c939efa0acc07a191237af900471 (diff)
downloadlwn-b15d00b6af617251cc70a908df983e9aff57e169.tar.gz
lwn-b15d00b6af617251cc70a908df983e9aff57e169.zip
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>
Diffstat (limited to 'mm/mmap.c')
-rw-r--r--mm/mmap.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 50a4aa0255a0..753f44d17047 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 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
end, prev->vm_pgoff, NULL);
if (err)
return NULL;
+ khugepaged_enter_vma_merge(prev);
return prev;
}
@@ -833,6 +835,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
next->vm_pgoff - pglen, NULL);
if (err)
return NULL;
+ khugepaged_enter_vma_merge(area);
return area;
}
@@ -1761,6 +1764,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
}
}
vma_unlock_anon_vma(vma);
+ khugepaged_enter_vma_merge(vma);
return error;
}
#endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
@@ -1808,6 +1812,7 @@ static int expand_downwards(struct vm_area_struct *vma,
}
}
vma_unlock_anon_vma(vma);
+ khugepaged_enter_vma_merge(vma);
return error;
}