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hash_string: Fix zero-length case for !DCACHE_WORD_ACCESS

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The self-test was updated to cover zero-length strings; the function
needs to be updated, too.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Fixes: fcfd2fbf22 ("fs/namei.c: Add hashlen_string() function")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
George Spelvin
2016-05-29 08:05:56 -04:00
committed by Linus Torvalds
parent f2a031b66e
commit e0ab7af9bd
1 changed files with 2 additions and 2 deletions
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4
fs/namei.c
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@@ -1968,11 +1968,11 @@ u64 hashlen_string(const char *name)
unsigned long len = 0, c; unsigned long len = 0, c;
c = (unsigned char)*name; c = (unsigned char)*name;
do { while (c) {
len++; len++;
hash = partial_name_hash(c, hash); hash = partial_name_hash(c, hash);
c = (unsigned char)name[len]; c = (unsigned char)name[len];
} while (c); }
return hashlen_create(end_name_hash(hash), len); return hashlen_create(end_name_hash(hash), len);
} }
EXPORT_SYMBOL(hashlen_string); EXPORT_SYMBOL(hashlen_string);