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thp: khugepaged vma merge

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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>
This commit is contained in:
Andrea Arcangeli 2011-01-13 15:46:59 -08:00 committed by Linus Torvalds
parent ba76149f47
commit b15d00b6af
1 changed files with 5 additions and 0 deletions
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5
mm/mmap.c
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@ -29,6 +29,7 @@
#include <linux/mmu_notifier.h> #include <linux/mmu_notifier.h>
#include <linux/perf_event.h> #include <linux/perf_event.h>
#include <linux/audit.h> #include <linux/audit.h>
#include <linux/khugepaged.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
@ -815,6 +816,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
end, prev->vm_pgoff, NULL); end, prev->vm_pgoff, NULL);
if (err) if (err)
return NULL; return NULL;
khugepaged_enter_vma_merge(prev);
return prev; return prev;
} }
@ -833,6 +835,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
next->vm_pgoff - pglen, NULL); next->vm_pgoff - pglen, NULL);
if (err) if (err)
return NULL; return NULL;
khugepaged_enter_vma_merge(area);
return area; return area;
} }
@ -1761,6 +1764,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
} }
} }
vma_unlock_anon_vma(vma); vma_unlock_anon_vma(vma);
khugepaged_enter_vma_merge(vma);
return error; return error;
} }
#endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */ #endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
@ -1808,6 +1812,7 @@ static int expand_downwards(struct vm_area_struct *vma,
} }
} }
vma_unlock_anon_vma(vma); vma_unlock_anon_vma(vma);
khugepaged_enter_vma_merge(vma);
return error; return error;
} }