Pull asm-slot-fix into release branch

[karo-tx-linux.git] / mm / madvise.c

diff --git a/mm/madvise.c b/mm/madvise.c
index 73180a22877ed24bcbd01fbca9a2be10c799df2f..20e075d1c64c9c64674e5fc418c6643418931661 100644 (file)
--- 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;
 }
 
@@ -140,10 +140,11 @@ static long madvise_dontneed(struct vm_area_struct * vma,
        return 0;
 }
 
-static long madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev,
-                       unsigned long start, unsigned long end, int behavior)
+static long
+madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev,
+               unsigned long start, unsigned long end, int behavior)
 {
-       long error = -EBADF;
+       long error;
 
        switch (behavior) {
        case MADV_NORMAL:
@@ -164,7 +165,6 @@ static long madvise_vma(struct vm_area_struct *vma, struct vm_area_struct **prev
                error = -EINVAL;
                break;
        }
-               
        return error;
 }
 
@@ -234,8 +234,9 @@ 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;