linux-kernel - RE: [PATCH 1/4] exfat: Simplify exfat_utf8_d

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Date:   Wed, 8 Apr 2020 03:59:06 +0000
From:   "Kohada.Tetsuhiro@...MitsubishiElectric.co.jp" 
        <Kohada.Tetsuhiro@...MitsubishiElectric.co.jp>
To:     "'pali@...nel.org'" <pali@...nel.org>
CC:     "'linux-fsdevel@...r.kernel.org'" <linux-fsdevel@...r.kernel.org>,
        "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
        "'namjae.jeon@...sung.com'" <namjae.jeon@...sung.com>,
        "'sj1557.seo@...sung.com'" <sj1557.seo@...sung.com>,
        "'viro@...iv.linux.org.uk'" <viro@...iv.linux.org.uk>
Subject: RE: [PATCH 1/4] exfat: Simplify exfat_utf8_d_hash() for code points
 above U+FFFF

> So partial_name_hash() like I used it in this patch series is enough?

I think partial_name_hash() is enough for 8/16/21bit characters.

Another point about the discrimination of 21bit characters:
I think that checking in exfat_toupper () can be more simplified.

 ex: return a < PLANE_SIZE && sbi->vol_utbl[a] ? sbi->vol_utbl[a] : a;

---
Kohada Tetsuhiro <Kohada.Tetsuhiro@...MitsubishiElectric.co.jp>