Commit 2ae624d5 authored by John Groves's avatar John Groves Committed by Ira Weiny
Browse files

dax: export dax_dev_get() 



famfs needs to look up a dax_device by dev_t when resolving fmap
entries that reference character dax devices.

Reviewed-by: default avatarDave Jiang <dave.jiang@intel.com>
Reviewed-by: default avatarJonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: default avatarJohn Groves <john@groves.net>
Link: https://patch.msgid.link/0100019d311daab5-bb212f0b-4e05-4668-bf53-d76fab56be68-000000@email.amazonses.com


Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
parent eec38f5d

drivers/dax/super.c

+2 −1
Original line number Diff line number Diff line
@@ -521,7 +521,7 @@ static int dax_set(struct inode *inode, void *data) 
	return 0;

}



static struct dax_device *dax_dev_get(dev_t devt)

struct dax_device *dax_dev_get(dev_t devt)

{

	struct dax_device *dax_dev;

	struct inode *inode;
@@ -544,6 +544,7 @@ static struct dax_device *dax_dev_get(dev_t devt) 


	return dax_dev;

}

EXPORT_SYMBOL_GPL(dax_dev_get);



struct dax_device *alloc_dax(void *private, const struct dax_operations *ops)

{

include/linux/dax.h

+1 −0
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ struct dax_device *alloc_dax(void *private, const struct dax_operations *ops); 
void *dax_holder(struct dax_device *dax_dev);

void put_dax(struct dax_device *dax_dev);

void kill_dax(struct dax_device *dax_dev);

struct dax_device *dax_dev_get(dev_t devt);

void dax_write_cache(struct dax_device *dax_dev, bool wc);

bool dax_write_cache_enabled(struct dax_device *dax_dev);

bool dax_synchronous(struct dax_device *dax_dev);