linux-kernel - [PATCH 08/27] fsdax: depend on ZONE_DEVICE || FS_DAX

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Date:   Thu, 10 Feb 2022 08:28:09 +0100
From:   Christoph Hellwig <hch@....de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>
Cc:     Felix Kuehling <Felix.Kuehling@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Karol Herbst <kherbst@...hat.com>,
        Lyude Paul <lyude@...hat.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Alistair Popple <apopple@...dia.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        nvdimm@...ts.linux.dev, linux-mm@...ck.org,
        Jason Gunthorpe <jgg@...dia.com>
Subject: [PATCH 08/27] fsdax: depend on ZONE_DEVICE || FS_DAX_LIMITED

Add a depends on ZONE_DEVICE support or the s390-specific limited DAX
support, as one of the two is required at runtime for fsdax code to
actually work.

Signed-off-by: Christoph Hellwig <hch@....de>
Reviewed-by: Logan Gunthorpe <logang@...tatee.com>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
---
 fs/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/Kconfig b/fs/Kconfig
index e9433bbc48010a..7f2455e8e18ae2 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -48,6 +48,7 @@ config FS_DAX
 	bool "File system based Direct Access (DAX) support"
 	depends on MMU
 	depends on !(ARM || MIPS || SPARC)
+	depends on ZONE_DEVICE || FS_DAX_LIMITED
 	select FS_IOMAP
 	select DAX
 	help
-- 
2.30.2