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authorVivek Goyal <vgoyal@redhat.com>2017-07-26 09:35:09 -0400
committerMike Snitzer <snitzer@redhat.com>2017-07-26 15:55:44 -0400
commit273752c9ff03eb83856601b2a3458218bb949e46 (patch)
tree2248ae6002c2deed099fcc0657c8665c2015d949 /include
parent34c96507e8f6be497c15497be05f489fb34c5880 (diff)
downloadlinux-273752c9ff03eb83856601b2a3458218bb949e46.tar.bz2
dm, dax: Make sure dm_dax_flush() is called if device supports it
Currently dm_dax_flush() is not being called, even if underlying dax device supports write cache, because DAXDEV_WRITE_CACHE is not being propagated up to the DM dax device. If the underlying dax device supports write cache, set DAXDEV_WRITE_CACHE on the DM dax device. This will cause dm_dax_flush() to be called. Fixes: abebfbe2f7 ("dm: add ->flush() dax operation support") Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/dax.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 794811875732..df97b7af7e2c 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -87,6 +87,7 @@ size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
void dax_flush(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
size_t size);
void dax_write_cache(struct dax_device *dax_dev, bool wc);
+bool dax_write_cache_enabled(struct dax_device *dax_dev);
/*
* We use lowest available bit in exceptional entry for locking, one bit for