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-rw-r--r--mm/madvise.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/madvise.c b/mm/madvise.c
index c8c01a1..4454936 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -37,7 +37,7 @@ static long madvise_behavior(struct vm_area_struct * vma,
if (new_flags == vma->vm_flags) {
*prev = vma;
- goto success;
+ goto out;
}
pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT);
@@ -62,6 +62,7 @@ static long madvise_behavior(struct vm_area_struct * vma,
goto out;
}
+success:
/*
* vm_flags is protected by the mmap_sem held in write mode.
*/
@@ -70,7 +71,6 @@ static long madvise_behavior(struct vm_area_struct * vma,
out:
if (error == -ENOMEM)
error = -EAGAIN;
-success:
return error;
}
@@ -237,8 +237,9 @@ asmlinkage long sys_madvise(unsigned long start, size_t len_in, int behavior)
* - different from the way of handling in mlock etc.
*/
vma = find_vma_prev(current->mm, start, &prev);
- if (!vma && prev)
- vma = prev->vm_next;
+ if (vma && start > vma->vm_start)
+ prev = vma;
+
for (;;) {
/* Still start < end. */
error = -ENOMEM;
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