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| author | Derek <denc716@gmail.com> | 2015-04-15 16:14:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-15 16:35:18 -0700 |
| commit | 6cd576130b7152d8f225bab9d21a3f6f96c84b47 (patch) | |
| tree | 4c3f0e4977cd5d871dd93de6d55f0ff502db8ef2 | |
| parent | 12215182c80c06ab3c69969abba6e4a834493cd8 (diff) | |
| download | lwn-6cd576130b7152d8f225bab9d21a3f6f96c84b47.tar.gz lwn-6cd576130b7152d8f225bab9d21a3f6f96c84b47.zip | |
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>
| -rw-r--r-- | mm/mremap.c | 25 |
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, |