linux-kernel - Re: [PATCH] mm/sparse: Rename function related to section memmap allocation/free

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Date:   Wed, 20 Mar 2019 16:02:30 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Mike Rapoport <rppt@...ux.ibm.com>
Cc:     linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        osalvador@...e.de, mhocko@...e.com, rppt@...ux.vnet.ibm.com,
        richard.weiyang@...il.com, linux-mm@...ck.org
Subject: Re: [PATCH] mm/sparse: Rename function related to section memmap
 allocation/free

On 03/20/19 at 09:59am, Mike Rapoport wrote:
> On Wed, Mar 20, 2019 at 03:53:01PM +0800, Baoquan He wrote:
> > These functions are used allocate/free section memmap, have nothing
> > to do with kmalloc/free during the handling. Rename them to remove
> > the confusion.
> > 
> > Signed-off-by: Baoquan He <bhe@...hat.com>
> 
> Acked-by: Mike Rapoport <rppt@...ux.ibm.com>

Thanks for reviewing, Mike. I makde mistake to send this one twice.
You can see it has been added into the patchset. Anyway, I will add your
'Acked-by' when repost to address those issues you pointed out.

Thanks
Baoquan

> 
> > ---
> >  mm/sparse.c | 18 +++++++++---------
> >  1 file changed, 9 insertions(+), 9 deletions(-)
> > 
> > diff --git a/mm/sparse.c b/mm/sparse.c
> > index 054b99f74181..374206212d01 100644
> > --- a/mm/sparse.c
> > +++ b/mm/sparse.c
> > @@ -579,13 +579,13 @@ void offline_mem_sections(unsigned long start_pfn, unsigned long end_pfn)
> >  #endif
> > 
> >  #ifdef CONFIG_SPARSEMEM_VMEMMAP
> > -static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid,
> > +static inline struct page *alloc_section_memmap(unsigned long pnum, int nid,
> >  		struct vmem_altmap *altmap)
> >  {
> >  	/* This will make the necessary allocations eventually. */
> >  	return sparse_mem_map_populate(pnum, nid, altmap);
> >  }
> > -static void __kfree_section_memmap(struct page *memmap,
> > +static void __free_section_memmap(struct page *memmap,
> >  		struct vmem_altmap *altmap)
> >  {
> >  	unsigned long start = (unsigned long)memmap;
> > @@ -603,7 +603,7 @@ static void free_map_bootmem(struct page *memmap)
> >  }
> >  #endif /* CONFIG_MEMORY_HOTREMOVE */
> >  #else
> > -static struct page *__kmalloc_section_memmap(void)
> > +static struct page *__alloc_section_memmap(void)
> >  {
> >  	struct page *page, *ret;
> >  	unsigned long memmap_size = sizeof(struct page) * PAGES_PER_SECTION;
> > @@ -624,13 +624,13 @@ static struct page *__kmalloc_section_memmap(void)
> >  	return ret;
> >  }
> > 
> > -static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid,
> > +static inline struct page *alloc_section_memmap(unsigned long pnum, int nid,
> >  		struct vmem_altmap *altmap)
> >  {
> > -	return __kmalloc_section_memmap();
> > +	return __alloc_section_memmap();
> >  }
> > 
> > -static void __kfree_section_memmap(struct page *memmap,
> > +static void __free_section_memmap(struct page *memmap,
> >  		struct vmem_altmap *altmap)
> >  {
> >  	if (is_vmalloc_addr(memmap))
> > @@ -701,7 +701,7 @@ int __meminit sparse_add_one_section(int nid, unsigned long start_pfn,
> >  	usemap = __kmalloc_section_usemap();
> >  	if (!usemap)
> >  		return -ENOMEM;
> > -	memmap = kmalloc_section_memmap(section_nr, nid, altmap);
> > +	memmap = alloc_section_memmap(section_nr, nid, altmap);
> >  	if (!memmap) {
> >  		kfree(usemap);
> >  		return -ENOMEM;
> > @@ -726,7 +726,7 @@ int __meminit sparse_add_one_section(int nid, unsigned long start_pfn,
> >  out:
> >  	if (ret < 0) {
> >  		kfree(usemap);
> > -		__kfree_section_memmap(memmap, altmap);
> > +		__free_section_memmap(memmap, altmap);
> >  	}
> >  	return ret;
> >  }
> > @@ -777,7 +777,7 @@ static void free_section_usemap(struct page *memmap, unsigned long *usemap,
> >  	if (PageSlab(usemap_page) || PageCompound(usemap_page)) {
> >  		kfree(usemap);
> >  		if (memmap)
> > -			__kfree_section_memmap(memmap, altmap);
> > +			__free_section_memmap(memmap, altmap);
> >  		return;
> >  	}
> > 
> > -- 
> > 2.17.2
> > 
> 
> -- 
> Sincerely yours,
> Mike.
>