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

[Gao Xiang <gaoxiang25@huawei.com>]

Hi Pratik,

On Thu, Aug 29, 2019 at 06:38:13PM +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.
> 
> Signed-off-by: Pratik Shinde <pratikshinde320@gmail.com>

No, that is not the case, see __ext4_iget() in fs/ext4/inode.c.
and could you write patches based on latest staging tree?
erofs is now in "fs/" rather than "drivers/staging".
and I will review it then.

p.s. if someone argues here or there, there will be endless
issues since there is no standard at all.

Thanks,
Gao Xiang

> ---
>  drivers/staging/erofs/inode.c | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/staging/erofs/inode.c b/drivers/staging/erofs/inode.c
> index 4c3d8bf..2d2d545 100644
> --- a/drivers/staging/erofs/inode.c
> +++ b/drivers/staging/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 = -EIO;
>  			goto out_unlock;
>  		}
> -- 
> 2.9.3
>