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authorDan Williams <dan.j.williams@intel.com>2018-03-30 02:20:39 +0200
committerDan Williams <dan.j.williams@intel.com>2018-04-03 14:41:19 +0200
commit2080e88aecd78773eacbe7d6b9d59968000ba55a (patch)
tree884af4d8fa7c875451df94cd82c917338992386e /README
parentfs, dax: use page->mapping to warn if truncate collides with a busy page (diff)
downloadlinux-2080e88aecd78773eacbe7d6b9d59968000ba55a.tar.xz
linux-2080e88aecd78773eacbe7d6b9d59968000ba55a.zip
dax: introduce CONFIG_DAX_DRIVER
In support of allowing device-mapper to compile out idle/dead code when there are no dax providers in the system, introduce the DAX_DRIVER symbol. This is selected by all leaf drivers that device-mapper might be layered on top. This allows device-mapper to conditionally 'select DAX' only when a provider is present. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Reported-by: Bart Van Assche <Bart.VanAssche@wdc.com> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'README')
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