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-rw-r--r--mm/mremap.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index 93adddecf97..20a07dba6be 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -175,6 +175,7 @@ static unsigned long move_vma(struct vm_area_struct *vma,
unsigned long excess = 0;
unsigned long hiwater_vm;
int split = 0;
+ int err;
/*
* We'd prefer to avoid failure later on in do_munmap:
@@ -190,9 +191,10 @@ static unsigned long move_vma(struct vm_area_struct *vma,
* pages recently unmapped. But leave vma->vm_flags as it was,
* so KSM can come around to merge on vma and new_vma afterwards.
*/
- if (ksm_madvise(vma, old_addr, old_addr + old_len,
- MADV_UNMERGEABLE, &vm_flags))
- return -ENOMEM;
+ err = ksm_madvise(vma, old_addr, old_addr + old_len,
+ MADV_UNMERGEABLE, &vm_flags);
+ if (err)
+ return err;
new_pgoff = vma->vm_pgoff + ((old_addr - vma->vm_start) >> PAGE_SHIFT);
new_vma = copy_vma(&vma, new_addr, new_len, new_pgoff);