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Date: Wed, 13 Aug 2014 09:25:53 +0200
From: Richard Weinberger <richard.weinberger@...il.com>
To: "vishnu.ps" <vishnu.ps@...sung.com>
Cc: Mel Gorman <mgorman@...e.de>,
Andrew Morton <akpm@...ux-foundation.org>,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Oleg Nesterov <oleg@...hat.com>,
Rik van Riel <riel@...hat.com>, walken@...gle.com,
jmarchan@...hat.com, davidlohr@...com,
Sasha Levin <sasha.levin@...cle.com>,
Cyrill Gorcunov <gorcunov@...il.com>,
Andy Lutomirski <luto@...capital.net>, dh.herrmann@...il.com,
mitchelh@...eaurora.org, "linux-mm@...ck.org" <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>, cpgs@...sung.com,
"pintu.k@...sung.com" <pintu.k@...sung.com>, vishu13285@...il.com
Subject: Re: [PATCH] Fix checkpatch error's for mm/mmap.c
On Wed, Aug 13, 2014 at 9:08 AM, vishnu.ps <vishnu.ps@...sung.com> wrote:
> From: "vishnu.ps" <vishnu.ps@...sung.com>
>
> Signed-off-by: vishnu.ps <vishnu.ps@...sung.com>
> ---
> mm/mmap.c | 37 +++++++++++++++++++------------------
> 1 file changed, 19 insertions(+), 18 deletions(-)
Please don't run checkpatch.pl on in-kernel files.
The tool is designed to check patches, not files.
Such whitespace cleanups pollute the kernel history, i.e. such that
git blame returns false positives.
The purpose of --file is:
- Checking out-of-tree files (like existing drivers to be imported)
- One notable exception is drivers/staging/, you can run it on these files.
Besides of that, your patch description is too sloppy.
Please see Documentation/SubmittingPatches "2) Describe your changes."
> diff --git a/mm/mmap.c b/mm/mmap.c
> index 80217c9..5cce169 100644
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -70,7 +70,7 @@ static void unmap_region(struct mm_struct *mm,
> * MAP_SHARED r: (no) no r: (yes) yes r: (no) yes r: (no) yes
> * w: (no) no w: (no) no w: (yes) yes w: (no) no
> * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
> - *
> + *
> * MAP_PRIVATE r: (no) no r: (yes) yes r: (no) yes r: (no) yes
> * w: (no) no w: (no) no w: (copy) copy w: (no) no
> * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
> @@ -741,7 +741,7 @@ again: remove_next = 1 + (end > next->vm_end);
> * split_vma inserting another: so it must be
> * mprotect case 4 shifting the boundary down.
> */
> - adjust_next = - ((vma->vm_end - end) >> PAGE_SHIFT);
> + adjust_next = -((vma->vm_end - end) >> PAGE_SHIFT);
> exporter = vma;
> importer = next;
> }
> @@ -1010,7 +1010,7 @@ can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
> struct vm_area_struct *vma_merge(struct mm_struct *mm,
> struct vm_area_struct *prev, unsigned long addr,
> unsigned long end, unsigned long vm_flags,
> - struct anon_vma *anon_vma, struct file *file,
> + struct anon_vma *anon_vma, struct file *file,
> pgoff_t pgoff, struct mempolicy *policy)
> {
> pgoff_t pglen = (end - addr) >> PAGE_SHIFT;
> @@ -1036,7 +1036,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
> * Can it merge with the predecessor?
> */
> if (prev && prev->vm_end == addr &&
> - mpol_equal(vma_policy(prev), policy) &&
> + mpol_equal(vma_policy(prev), policy) &&
> can_vma_merge_after(prev, vm_flags,
> anon_vma, file, pgoff)) {
> /*
> @@ -1064,7 +1064,7 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
> * Can this new request be merged in front of next?
> */
> if (next && end == next->vm_start &&
> - mpol_equal(policy, vma_policy(next)) &&
> + mpol_equal(policy, vma_policy(next)) &&
> can_vma_merge_before(next, vm_flags,
> anon_vma, file, pgoff+pglen)) {
> if (prev && addr < prev->vm_end) /* case 4 */
> @@ -1235,7 +1235,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
> unsigned long flags, unsigned long pgoff,
> unsigned long *populate)
> {
> - struct mm_struct * mm = current->mm;
> + struct mm_struct *mm = current->mm;
> vm_flags_t vm_flags;
>
> *populate = 0;
> @@ -1263,7 +1263,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
>
> /* offset overflow? */
> if ((pgoff + (len >> PAGE_SHIFT)) < pgoff)
> - return -EOVERFLOW;
> + return -EOVERFLOW;
>
> /* Too many mappings? */
> if (mm->map_count > sysctl_max_map_count)
> @@ -1921,7 +1921,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
> info.align_mask = 0;
> return vm_unmapped_area(&info);
> }
> -#endif
> +#endif
>
> /*
> * This mmap-allocator allocates new areas top-down from below the
> @@ -2321,13 +2321,13 @@ int expand_stack(struct vm_area_struct *vma, unsigned long address)
> }
>
> struct vm_area_struct *
> -find_extend_vma(struct mm_struct * mm, unsigned long addr)
> +find_extend_vma(struct mm_struct *mm, unsigned long addr)
> {
> - struct vm_area_struct * vma;
> + struct vm_area_struct *vma;
> unsigned long start;
>
> addr &= PAGE_MASK;
> - vma = find_vma(mm,addr);
> + vma = find_vma(mm, addr);
> if (!vma)
> return NULL;
> if (vma->vm_start <= addr)
> @@ -2376,7 +2376,7 @@ static void unmap_region(struct mm_struct *mm,
> struct vm_area_struct *vma, struct vm_area_struct *prev,
> unsigned long start, unsigned long end)
> {
> - struct vm_area_struct *next = prev? prev->vm_next: mm->mmap;
> + struct vm_area_struct *next = prev ? prev->vm_next : mm->mmap;
> struct mmu_gather tlb;
>
> lru_add_drain();
> @@ -2423,7 +2423,7 @@ detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma,
> * __split_vma() bypasses sysctl_max_map_count checking. We use this on the
> * munmap path where it doesn't make sense to fail.
> */
> -static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
> +static int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
> unsigned long addr, int new_below)
> {
> struct vm_area_struct *new;
> @@ -2512,7 +2512,8 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
> if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start)
> return -EINVAL;
>
> - if ((len = PAGE_ALIGN(len)) == 0)
> + len = PAGE_ALIGN(len);
> + if (len == 0)
> return -EINVAL;
>
> /* Find the first overlapping VMA */
> @@ -2558,7 +2559,7 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
> if (error)
> return error;
> }
> - vma = prev? prev->vm_next: mm->mmap;
> + vma = prev ? prev->vm_next : mm->mmap;
>
> /*
> * unlock any mlock()ed ranges before detaching vmas
> @@ -2690,10 +2691,10 @@ static inline void verify_mm_writelocked(struct mm_struct *mm)
> */
> static unsigned long do_brk(unsigned long addr, unsigned long len)
> {
> - struct mm_struct * mm = current->mm;
> - struct vm_area_struct * vma, * prev;
> + struct mm_struct *mm = current->mm;
> + struct vm_area_struct *vma, *prev;
> unsigned long flags;
> - struct rb_node ** rb_link, * rb_parent;
> + struct rb_node **rb_link, *rb_parent;
> pgoff_t pgoff = addr >> PAGE_SHIFT;
> int error;
>
> --
> 1.8.3.2
>
> --
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--
Thanks,
//richard
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