linux-kernel - [PATCH] bit_spinlock: Include <asm/processor.h>

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Date:   Sun,  8 Jan 2023 20:04:44 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Vineet Gupta <vgupta@...nel.org>,
        Dan Carpenter <error27@...il.com>
Cc:     linux-snps-arc@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] bit_spinlock: Include <asm/processor.h>

In an attempt to simplify some includes in <include/dcache.h>, it
appeared, when compiling fs/ecryptfs/dentry.c, that <linux/bit_spinlock.h>
was relying on other includes to get the definition of cpu_relax().
(see [1])

It broke on arc.

Include <asm/processor.h> in <linux/bit_spinlock.h> to fix the issue.
This will help remove some un-needed includes from <include/dcache.h>.

[1]: https://lore.kernel.org/all/202301082130.LXMj5qkD-lkp@intel.com/

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Not sure who to send this to.
get_maintainer.pl is of no help, and the file is untouched from a too long
time.

Greg? Dan? Any pointer?
---
 include/linux/bit_spinlock.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/bit_spinlock.h b/include/linux/bit_spinlock.h
index bbc4730a6505..d0fd2a7afca2 100644
--- a/include/linux/bit_spinlock.h
+++ b/include/linux/bit_spinlock.h
@@ -2,6 +2,7 @@
 #ifndef __LINUX_BIT_SPINLOCK_H
 #define __LINUX_BIT_SPINLOCK_H
 
+#include <asm/processor.h>
 #include <linux/kernel.h>
 #include <linux/preempt.h>
 #include <linux/atomic.h>
-- 
2.34.1