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SubjectRe: [PATCH v3 02/10] fs/ntfs3: Add initialization of super block
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 */
}
}

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