linux-kernel - [PATCH] btrfs: select FS

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Date:   Thu, 28 May 2020 11:16:42 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        YueHaibing <yuehaibing@...wei.com>, linux-btrfs@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] btrfs: select FS_IOMAP

As btrfs now calls iomap_dio_rw, the helper code actually has
to be enabled to avoid a link error:

ERROR: modpost: "iomap_dio_rw" [fs/btrfs/btrfs.ko] undefined!

Fixes: f31e5f70919f ("btrfs: switch to iomap_dio_rw() for dio")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 fs/btrfs/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 575636f6491e..68b95ad82126 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -14,6 +14,7 @@ config BTRFS_FS
 	select LZO_DECOMPRESS
 	select ZSTD_COMPRESS
 	select ZSTD_DECOMPRESS
+	select FS_IOMAP
 	select RAID6_PQ
 	select XOR_BLOCKS
 	select SRCU
-- 
2.26.2