From 72058005411ffddcae6c06f7b691d635489132af Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 19 Apr 2017 15:14:31 -0700 Subject: dax: add a facility to lookup a dax device by 'host' device name For the current block_device based filesystem-dax path, we need a way for it to lookup the dax_device associated with a block_device. Add a 'host' property of a dax_device that can be used for this purpose. It is a free form string, but for a dax_device associated with a block device it is the bdev name. This is a stop-gap until filesystems are able to mount on a dax-inode directly. Signed-off-by: Dan Williams --- include/linux/dax.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/dax.h') diff --git a/include/linux/dax.h b/include/linux/dax.h index 5b62f5d19aea..9b2d5ba10d7d 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -10,6 +10,7 @@ struct iomap_ops; int dax_read_lock(void); void dax_read_unlock(int id); +struct dax_device *dax_get_by_host(const char *host); /* * We use lowest available bit in exceptional entry for locking, one bit for -- cgit v1.2.3