From: Arnd Bergmann <arnd@arndb.de>
To: Mikulas Patocka <mpatocka@redhat.com>,
Shaohua Li <shli@kernel.org>, Alasdair Kergon <agk@redhat.com>,
Mike Snitzer <snitzer@redhat.com>,
dm-devel@redhat.com
Cc: Matthew Wilcox <mawilcox@microsoft.com>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
linux-fsdevel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Dan Williams <dan.j.williams@intel.com>,
Heinz Mauelshagen <heinzm@redhat.com>,
linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] dm: writecache: add DAX dependency
Date: Mon, 28 May 2018 17:38:10 +0200 [thread overview]
Message-ID: <20180528153834.2268557-1-arnd@arndb.de> (raw)
The new dm-writecache driver inconditionally uses the dax
subsystem, leading to link errors in some configurations:
drivers/md/dm-writecache.o: In function `writecache_ctr':
dm-writecache.c:(.text+0x1fdc): undefined reference to `dax_read_lock'
dm-writecache.c:(.text+0x2004): undefined reference to `dax_direct_access'
dm-writecache.c:(.text+0x21cc): undefined reference to `dax_read_unlock'
It seems wrong to require DAX in order to build the writecache
driver, but that at least avoids randconfig build errors.
Fixes: bb15b431d650 ("dm: add writecache target")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/md/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 852c7ebe2902..f8ecf2da1edf 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -338,6 +338,7 @@ config DM_CACHE_SMQ
config DM_WRITECACHE
tristate "Writecache target"
depends on BLK_DEV_DM
+ depends on DAX
---help---
The writecache target caches writes on persistent memory or SSD.
It is intended for databases or other programs that need extremely
--
2.9.0
next reply other threads:[~2018-05-28 15:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-28 15:38 Arnd Bergmann [this message]
2018-05-28 18:18 ` [PATCH] dm: writecache: add DAX dependency Dan Williams
2018-05-29 13:06 ` Mike Snitzer
2018-05-29 15:17 ` [PATCH] " Ross Zwisler
2018-05-29 17:52 ` [PATCH] dm-writecache: fix compilation issue with !DAX Ross Zwisler
2018-05-29 18:08 ` Mike Snitzer
2018-05-29 18:40 ` Dan Williams
2018-05-29 19:57 ` Mike Snitzer
2018-05-30 12:22 ` [PATCH] " Mikulas Patocka
2018-05-30 13:13 ` Mike Snitzer
2018-05-30 12:21 ` [PATCH] dm: writecache: add DAX dependency Mikulas Patocka
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