linux-kernel - Build errors in mainline due to "fs/namei.c:,Add hashlen

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Message-ID: <574A7B8B.5080200@roeck-us.net>
Date:	Sat, 28 May 2016 22:18:03 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	George Spelvin <linux@...encehorizons.net>
Subject: Build errors in mainline due to "fs/namei.c:,Add hashlen_string()
 function"

I see:

fs/dcache.c:1673: undefined reference to `hashlen_string'

For:
	total: 148 pass: 22 fail: 126

I didn't bisect, but I strongly suspect commit fcfd2fbf22d2 ("fs/namei.c:
Add hashlen_string() function") because the new function is not provided
if DCACHE_WORD_ACCESS is not enabled. This affects almost all architectures.

Reverting 468a9428521e, 2a18da7a9c78, and fcfd2fbf22d2 fixed the problem
for me in a couple of test builds, but I don't know if all three patches
need to be reverted, or if reverting those patches fixes the problem for
all builds, or if the revert is sufficient.

Guenter