linux-kernel - Re: [PATCH] Rename other copy of hash_string to hashlen

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Date:	29 May 2016 08:02:46 -0400
From:	"George Spelvin" <linux@...encehorizons.net>
To:	geert@...ux-m68k.org, linux@...encehorizons.net
Cc:	linux-kernel@...r.kernel.org, linux@...ck-us.net,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH] Rename other copy of hash_string to hashlen_string

> That version fails the test. On m68k/ARAnyM:
>
> test_hash: hashlen_string(256..256) returned length 1, expected 0

Just kill me. :-(

I didn't change that code, so I didn't re-test it.  But I changed
the test.

diff --git a/fs/namei.c b/fs/namei.c
index aefba699..dcb85255 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1958,11 +1958,11 @@ u64 hashlen_string(const char *name)
	unsigned long len = 0, c;
 
	c = (unsigned char)*name;
-       do {
+       while (c) {
		len++;
		hash = partial_name_hash(c, hash);
		c = (unsigned char)name[len];
-       } while (c);
+       }
	return hashlen_create(end_name_hash(hash), len);
 }
 EXPORT_SYMBOL(hashlen_string);