linux-kernel - RE: [PATCH v3 02/10] fs/ntfs3: Add initialization of super block

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Date:   Fri, 11 Sep 2020 16:59:34 +0000
From:   Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To:     Pali Rohár <pali@...nel.org>
CC:     "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dsterba@...e.cz" <dsterba@...e.cz>,
        "aaptel@...e.com" <aaptel@...e.com>,
        "willy@...radead.org" <willy@...radead.org>,
        "rdunlap@...radead.org" <rdunlap@...radead.org>,
        "joe@...ches.com" <joe@...ches.com>,
        "mark@...mstone.com" <mark@...mstone.com>
Subject: RE: [PATCH v3 02/10] fs/ntfs3: Add initialization of super block

From: linux-fsdevel-owner@...r.kernel.org <linux-fsdevel-owner@...r.kernel.org> On Behalf Of Pali Rohar
Sent: Friday, September 4, 2020 3:06 PM
> 
> Hello Konstantin!
> 
> On Friday 28 August 2020 07:39:30 Konstantin Komarov wrote:
> > +	if (nls_name[0]) {
> > +		sbi->nls = load_nls(nls_name);
> > +		if (!sbi->nls) {
> > +			ntfs_printk(sb, KERN_ERR "failed to load \"%s\"",
> > +				    nls_name);
> > +			return -EINVAL;
> > +		}
> > +	} else {
> > +		sbi->nls = load_nls_default();
> > +		if (!sbi->nls) {
> > +			ntfs_printk(sb, KERN_ERR "failed to load default nls");
> > +			return -EINVAL;
> > +		}
> > +	}
> > +
> > +	if (!strcmp(sbi->nls->charset, "utf8")) {
> > +		/*use utf16s_to_utf8s/utf8s_to_utf16s instead of nls*/
> > +		unload_nls(sbi->nls);
> > +		sbi->nls = NULL;
> > +	}
> 
> You can slightly simplify this code to omit calling load_nls() for UTF-8. E.g.:
> 
>     if (strcmp(nls_name[0] ? nls_name : CONFIG_NLS_DEFAULT, "utf8") == 0) {
>         /* For UTF-8 use utf16s_to_utf8s/utf8s_to_utf16s instead of nls */
>         sbi->nls = NULL;
>     } else if (nls_name) {
>         sbi->nls = load_nls(nls_name);
>         if (!sbi->nls) {
>             /* handle error */
>         }
>     } else {
>         sbi->nls = load_nls_default();
>         if (!sbi->nls) {
>             /* handle error */
>         }
>     }

Hi Pali! Thanks! Applied, check out the v5 please.

Best regards