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From: Olof Johansson <olof@lixom.net>
To: torvalds@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org,
	Olof Johansson <olof@lixom.net>
Subject: [PATCH] mm/filemap: fix parameters to test_bit()
Date: Thu, 29 Dec 2016 14:16:07 -0800	[thread overview]
Message-ID: <1483049767-25944-1-git-send-email-olof@lixom.net> (raw)
In-Reply-To: <CA+55aFxGz8R8J9jLvKpLUgyhWVYcgtObhbHBP7eZzZyc05AODw@mail.gmail.com>

mm/filemap.c: In function 'clear_bit_unlock_is_negative_byte':
mm/filemap.c:933:9: error: too few arguments to function 'test_bit'
  return test_bit(PG_waiters);
         ^~~~~~~~
In file included from arch/arm/include/asm/bitops.h:122:0,
                 from include/linux/bitops.h:36,
                 from include/linux/kernel.h:10,
                 from include/linux/list.h:8,
                 from include/linux/wait.h:6,
                 from include/linux/fs.h:5,
                 from lude/linux/dax.h:4,
                 from mm/filemap.c:14:
include/asm-generic/bitops/non-atomic.h:103:19: note: declared here
 static inline int test_bit(int nr, const volatile unsigned long *addr)
                   ^~~~~~~~
mm/filemap.c:934:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
scripts/Makefile.build:293: recipe for target 'mm/filemap.o' failed

Fixes: b91e1302ad9b ('mm: optimize PageWaiters bit use for unlock_page()')
Signed-off-by: Olof Johansson <olof@lixom.net>
---
 mm/filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 6b1d96f..d0e4d10 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -930,7 +930,7 @@ static inline bool clear_bit_unlock_is_negative_byte(long nr, volatile void *mem
 {
 	clear_bit_unlock(nr, mem);
 	/* smp_mb__after_atomic(); */
-	return test_bit(PG_waiters);
+	return test_bit(PG_waiters, mem);
 }
 
 #endif
-- 
2.8.0.rc3.29.gb552ff8

      parent reply	other threads:[~2016-12-29 22:16 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-25  3:00 [PATCH 0/2] PageWaiters again Nicholas Piggin
2016-12-25  3:00 ` [PATCH 1/2] mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked Nicholas Piggin
2016-12-25  5:13   ` Hugh Dickins
2016-12-25  3:00 ` [PATCH 2/2] mm: add PageWaiters indicating tasks are waiting for a page bit Nicholas Piggin
2016-12-25 21:51   ` Linus Torvalds
2016-12-26  1:16     ` Nicholas Piggin
2016-12-26 19:07       ` Linus Torvalds
2016-12-27 11:19         ` Nicholas Piggin
2016-12-27 18:58           ` Linus Torvalds
2016-12-27 19:23             ` Linus Torvalds
2016-12-27 19:24               ` Linus Torvalds
2016-12-27 19:40                 ` Linus Torvalds
2016-12-27 20:17                   ` Linus Torvalds
2016-12-28  3:53             ` Nicholas Piggin
2016-12-28 19:17               ` Linus Torvalds
2016-12-29  4:08                 ` Nicholas Piggin
2016-12-29  4:16                   ` Linus Torvalds
2016-12-29  5:26                     ` Nicholas Piggin
2017-01-03 10:24                       ` Mel Gorman
2017-01-03 12:29                         ` Nicholas Piggin
2017-01-03 17:18                           ` Mel Gorman
2016-12-29 22:16                     ` Olof Johansson [this message]

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