[PATCH] erofs: using switch-case while checking the inode type.

[Gao Xiang]

Hi Pratik,

The subject line could be better as '[PATCH v2] xxxxxx'...

On Fri, Aug 30, 2019 at 03:26:15PM +0530, Pratik Shinde wrote:
> while filling the linux inode, using switch-case statement to check
> the type of inode.
> switch-case statement looks more clean here.
> 
> Signed-off-by: Pratik Shinde <pratikshinde320 at gmail.com>

I have no problem of this patch, and I will do a test and reply
you "Reviewed-by:" in hours (I'm doing another patchset to resolve
what Christoph suggested again)...

Thanks,
Gao Xiang

> ---
>  fs/erofs/inode.c | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
> index 80f4fe9..6336cc1 100644
> --- a/fs/erofs/inode.c
> +++ b/fs/erofs/inode.c
> @@ -190,22 +190,28 @@ static int fill_inode(struct inode *inode, int isdir)
>  	err = read_inode(inode, data + ofs);
>  	if (!err) {
>  		/* setup the new inode */
> -		if (S_ISREG(inode->i_mode)) {
> +		switch (inode->i_mode & S_IFMT) {
> +		case S_IFREG:
>  			inode->i_op = &erofs_generic_iops;
>  			inode->i_fop = &generic_ro_fops;
> -		} else if (S_ISDIR(inode->i_mode)) {
> +			break;
> +		case S_IFDIR:
>  			inode->i_op = &erofs_dir_iops;
>  			inode->i_fop = &erofs_dir_fops;
> -		} else if (S_ISLNK(inode->i_mode)) {
> +			break;
> +		case S_IFLNK:
>  			/* by default, page_get_link is used for symlink */
>  			inode->i_op = &erofs_symlink_iops;
>  			inode_nohighmem(inode);
> -		} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
> -			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
> +			break;
> +		case S_IFCHR:
> +		case S_IFBLK:
> +		case S_IFIFO:
> +		case S_IFSOCK:
>  			inode->i_op = &erofs_generic_iops;
>  			init_special_inode(inode, inode->i_mode, inode->i_rdev);
>  			goto out_unlock;
> -		} else {
> +		default:
>  			err = -EFSCORRUPTED;
>  			goto out_unlock;
>  		}
> -- 
> 2.9.3
> 
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