[PATCH v2 1/4] dax: kill uml support

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From: Dan Williams <dan.j.williams@xxxxxxxxx>

The lack of common transparent-huge-page helpers for UML is becoming
increasingly painful for fs/dax.c now that it is growing more pmd
functionality. Add UML to the list of unsupported architectures.

Cc: Jan Kara <jack@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
[rez: squashed #ifdef removal into another patch in the series ]
Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
---
 fs/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/Kconfig b/fs/Kconfig
index c2a377c..661931f 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -37,7 +37,7 @@ source "fs/f2fs/Kconfig"
 config FS_DAX
 	bool "Direct Access (DAX) support"
 	depends on MMU
-	depends on !(ARM || MIPS || SPARC)
+	depends on !(ARM || MIPS || SPARC || UML)
 	help
 	  Direct Access (DAX) can be used on memory-backed block devices.
 	  If the block device supports DAX and the filesystem supports DAX,
-- 
2.7.4

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