Re: [PATCH v2] mm/hugetlb: fix error code in hugetlbfs_alloc_inode

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On Tue, 10 Jul 2012, Wanpeng Li wrote:

> diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
> index c4b85d0..79a0f33 100644
> --- a/fs/hugetlbfs/inode.c
> +++ b/fs/hugetlbfs/inode.c
> @@ -696,7 +696,7 @@ static struct inode *hugetlbfs_alloc_inode(struct super_block *sb)
>  	p = kmem_cache_alloc(hugetlbfs_inode_cachep, GFP_KERNEL);
>  	if (unlikely(!p)) {
>  		hugetlbfs_inc_free_inodes(sbinfo);
> -		return NULL;
> +		return ERR_PTR(-ENOMEM);
>  	}
>  	return &p->vfs_inode;
>  }

So now you've removed Gavin Shan who already told you that it was correct 
as written and propose yet another bogus patch which will break.  This 
isn't professional.

alloc_inode() tests for a NULL return value, not for PTR_ERR(), so you 
would be introducing a bug if this patch were merged.  It's completely 
correct the way it's written.

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