linux-kernel - [PATCH v2 2/5] exfat: Define NLS_NAME

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Date:   Tue, 26 Jul 2022 10:39:26 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     linux-fsdevel@...r.kernel.org
Cc:     Namjae Jeon <linkinjeon@...nel.org>,
        Sungjong Seo <sj1557.seo@...sung.com>,
        Petr Vorel <pvorel@...e.cz>, Joe Perches <joe@...ches.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/5] exfat: Define NLS_NAME_* as bit flags explicitly

NLS_NAME_* are bit flags although they are currently defined as enum;
it's casually working so far (from 0 to 2), but it's error-prone and
may bring a problem when we want to add more flag.

This patch changes the definitions of NLS_NAME_* explicitly being bit
flags.

Reviewed-by: Petr Vorel <pvorel@...e.cz>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 fs/exfat/exfat_fs.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index 4a7a2308eb72..f431327af459 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -27,9 +27,9 @@ enum exfat_error_mode {
  * exfat nls lossy flag
  */
 enum {
-	NLS_NAME_NO_LOSSY,	/* no lossy */
-	NLS_NAME_LOSSY,		/* just detected incorrect filename(s) */
-	NLS_NAME_OVERLEN,	/* the length is over than its limit */
+	NLS_NAME_NO_LOSSY =	0,	/* no lossy */
+	NLS_NAME_LOSSY =	1 << 0,	/* just detected incorrect filename(s) */
+	NLS_NAME_OVERLEN =	1 << 1,	/* the length is over than its limit */
 };
 
 #define EXFAT_HASH_BITS		8
-- 
2.35.3