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authorDerek <denc716@gmail.com>2015-04-15 16:14:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-15 16:35:18 -0700
commit6cd576130b7152d8f225bab9d21a3f6f96c84b47 (patch)
tree4c3f0e4977cd5d871dd93de6d55f0ff502db8ef2 /mm
parent12215182c80c06ab3c69969abba6e4a834493cd8 (diff)
mm/mremap.c: clean up goto just return ERR_PTR
As suggested by Kirill the "goto"s in vma_to_resize aren't necessary, just change them to explicit return. Signed-off-by: Derek Che <crquan@ymail.com> Suggested-by: "Kirill A. Shutemov" <kirill@shutemov.name> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mremap.c25
1 files changed, 8 insertions, 17 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index 1fb0f9069653..034e2d360652 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -345,25 +345,25 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
struct vm_area_struct *vma = find_vma(mm, addr);
if (!vma || vma->vm_start > addr)
- goto Efault;
+ return ERR_PTR(-EFAULT);
if (is_vm_hugetlb_page(vma))
- goto Einval;
+ return ERR_PTR(-EINVAL);
/* We can't remap across vm area boundaries */
if (old_len > vma->vm_end - addr)
- goto Efault;
+ return ERR_PTR(-EFAULT);
/* Need to be careful about a growing mapping */
if (new_len > old_len) {
unsigned long pgoff;
if (vma->vm_flags & (VM_DONTEXPAND | VM_PFNMAP))
- goto Efault;
+ return ERR_PTR(-EFAULT);
pgoff = (addr - vma->vm_start) >> PAGE_SHIFT;
pgoff += vma->vm_pgoff;
if (pgoff + (new_len >> PAGE_SHIFT) < pgoff)
- goto Einval;
+ return ERR_PTR(-EINVAL);
}
if (vma->vm_flags & VM_LOCKED) {
@@ -372,29 +372,20 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
lock_limit = rlimit(RLIMIT_MEMLOCK);
locked += new_len - old_len;
if (locked > lock_limit && !capable(CAP_IPC_LOCK))
- goto Eagain;
+ return ERR_PTR(-EAGAIN);
}
if (!may_expand_vm(mm, (new_len - old_len) >> PAGE_SHIFT))
- goto Enomem;
+ return ERR_PTR(-ENOMEM);
if (vma->vm_flags & VM_ACCOUNT) {
unsigned long charged = (new_len - old_len) >> PAGE_SHIFT;
if (security_vm_enough_memory_mm(mm, charged))
- goto Enomem;
+ return ERR_PTR(-ENOMEM);
*p = charged;
}
return vma;
-
-Efault: /* very odd choice for most of the cases, but... */
- return ERR_PTR(-EFAULT);
-Einval:
- return ERR_PTR(-EINVAL);
-Enomem:
- return ERR_PTR(-ENOMEM);
-Eagain:
- return ERR_PTR(-EAGAIN);
}
static unsigned long mremap_to(unsigned long addr, unsigned long old_len,

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