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From: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Cc: linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-nvdimm-y27Ovi1pjclAfugRpC6u6w@public.gmane.org
Subject: Re: [PATCH 12/12] ext2: use iomap to implement DAX
Date: Wed, 14 Sep 2016 16:51:05 -0600	[thread overview]
Message-ID: <20160914225105.GB29323@linux.intel.com> (raw)
In-Reply-To: <1473847291-18913-13-git-send-email-hch-jcswGhMUV9g@public.gmane.org>

On Wed, Sep 14, 2016 at 12:01:31PM +0200, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>

Now that ext2 is using IOMAP, we need to select FS_IOMAP when EXT2_FS is
selected else we get a build error:

fs/built-in.o: In function `ext2_dax_fault':
/home/rzwisler/project/review/fs/ext2/file.c:112: undefined reference to `iomap_dax_fault'
fs/built-in.o: In function `ext2_dax_write_iter':
/home/rzwisler/project/review/fs/ext2/file.c:75: undefined reference to `iomap_dax_rw'
fs/built-in.o: In function `ext2_dax_read_iter':
/home/rzwisler/project/review/fs/ext2/file.c:45: undefined reference to `iomap_dax_rw'
Makefile:949: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

With the following patch squashed into this commit:

Reviewed-by: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

---
>From 9c084641049990339b40bfd52a0aebf300d896ea Mon Sep 17 00:00:00 2001
From: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Date: Wed, 14 Sep 2016 16:48:36 -0600
Subject: [PATCH] ext2: build in FS_IOMAP support needed by ext2

Signed-off-by: Ross Zwisler <ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 fs/ext2/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext2/Kconfig b/fs/ext2/Kconfig
index c634874e..3391f48 100644
--- a/fs/ext2/Kconfig
+++ b/fs/ext2/Kconfig
@@ -1,5 +1,6 @@
 config EXT2_FS
 	tristate "Second extended fs support"
+	select FS_IOMAP
 	help
 	  Ext2 is a standard Linux file system for hard disks.
 
-- 
2.9.0

WARNING: multiple messages have this Message-ID

From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-nvdimm@ml01.01.org, ross.zwisler@linux.intel.com
Subject: Re: [PATCH 12/12] ext2: use iomap to implement DAX
Date: Wed, 14 Sep 2016 16:51:05 -0600	[thread overview]
Message-ID: <20160914225105.GB29323@linux.intel.com> (raw)
In-Reply-To: <1473847291-18913-13-git-send-email-hch@lst.de>

On Wed, Sep 14, 2016 at 12:01:31PM +0200, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Now that ext2 is using IOMAP, we need to select FS_IOMAP when EXT2_FS is
selected else we get a build error:

fs/built-in.o: In function `ext2_dax_fault':
/home/rzwisler/project/review/fs/ext2/file.c:112: undefined reference to `iomap_dax_fault'
fs/built-in.o: In function `ext2_dax_write_iter':
/home/rzwisler/project/review/fs/ext2/file.c:75: undefined reference to `iomap_dax_rw'
fs/built-in.o: In function `ext2_dax_read_iter':
/home/rzwisler/project/review/fs/ext2/file.c:45: undefined reference to `iomap_dax_rw'
Makefile:949: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1

With the following patch squashed into this commit:

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>

---
>From 9c084641049990339b40bfd52a0aebf300d896ea Mon Sep 17 00:00:00 2001
From: Ross Zwisler <ross.zwisler@linux.intel.com>
Date: Wed, 14 Sep 2016 16:48:36 -0600
Subject: [PATCH] ext2: build in FS_IOMAP support needed by ext2

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
 fs/ext2/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext2/Kconfig b/fs/ext2/Kconfig
index c634874e..3391f48 100644
--- a/fs/ext2/Kconfig
+++ b/fs/ext2/Kconfig
@@ -1,5 +1,6 @@
 config EXT2_FS
 	tristate "Second extended fs support"
+	select FS_IOMAP
 	help
 	  Ext2 is a standard Linux file system for hard disks.
 
-- 
2.9.0


  parent reply	other threads:[~2016-09-14 22:51 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-14 10:01 iomap based DAX path V2 Christoph Hellwig
2016-09-14 10:01 ` Christoph Hellwig
     [not found] ` <1473847291-18913-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 10:01   ` [PATCH 01/12] iomap: add IOMAP_F_NEW flag Christoph Hellwig
2016-09-14 10:01     ` Christoph Hellwig
2016-09-14 10:01   ` [PATCH 02/12] iomap: expose iomap_apply outside iomap.c Christoph Hellwig
2016-09-14 10:01     ` Christoph Hellwig
2016-09-14 10:01   ` [PATCH 12/12] ext2: use iomap to implement DAX Christoph Hellwig
2016-09-14 10:01     ` Christoph Hellwig
     [not found]     ` <1473847291-18913-13-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 22:51       ` Ross Zwisler [this message]
2016-09-14 22:51         ` Ross Zwisler
2016-09-15  5:14         ` Christoph Hellwig
2016-09-14 10:01 ` [PATCH 03/12] dax: don't pass buffer_head to dax_insert_mapping Christoph Hellwig
2016-09-14 10:01 ` [PATCH 04/12] dax: don't pass buffer_head to copy_user_dax Christoph Hellwig
2016-09-14 10:01 ` [PATCH 05/12] dax: provide an iomap based dax read/write path Christoph Hellwig
     [not found]   ` <1473847291-18913-6-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 17:26     ` Ross Zwisler
2016-09-14 17:26       ` Ross Zwisler
2016-09-14 10:01 ` [PATCH 06/12] dax: provide an iomap based fault handler Christoph Hellwig
2016-09-14 17:27   ` Ross Zwisler
     [not found]     ` <20160914172717.GB30852-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-09-15  5:13       ` Christoph Hellwig
2016-09-15  5:13         ` Christoph Hellwig
2016-09-14 10:01 ` [PATCH 07/12] xfs: fix locking for DAX writes Christoph Hellwig
2016-09-14 10:01 ` [PATCH 08/12] xfs: take the ilock shared if possible in xfs_file_iomap_begin Christoph Hellwig
2016-09-14 10:01 ` [PATCH 09/12] xfs: refactor xfs_setfilesize Christoph Hellwig
2016-09-14 10:01 ` [PATCH 10/12] xfs: use iomap to implement DAX Christoph Hellwig
     [not found]   ` <1473847291-18913-11-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 17:32     ` Ross Zwisler
2016-09-14 17:32       ` Ross Zwisler
     [not found]       ` <20160914173247.GC30852-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-09-15  5:14         ` Christoph Hellwig
2016-09-15  5:14           ` Christoph Hellwig
2016-09-15  5:29   ` Darrick J. Wong
     [not found]     ` <20160915052933.GH9314-PTl6brltDGh4DFYR7WNSRA@public.gmane.org>
2016-09-15  6:43       ` Christoph Hellwig
2016-09-15  6:43         ` Christoph Hellwig
2016-09-14 10:01 ` [PATCH 11/12] ext2: stop passing buffer_head to ext2_get_blocks Christoph Hellwig
     [not found]   ` <1473847291-18913-12-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 22:42     ` Ross Zwisler
2016-09-14 22:42       ` Ross Zwisler
2016-09-16 11:27 iomap based DAX path V3 Christoph Hellwig
     [not found] ` <1474025234-13804-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-16 11:27   ` [PATCH 12/12] ext2: use iomap to implement DAX Christoph Hellwig
2016-09-16 11:27     ` Christoph Hellwig
     [not found]     ` <1474025234-13804-13-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-26 14:49       ` Jan Kara
2016-09-26 14:49         ` Jan Kara

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