Looks like nobody is using fs_dax_get_by_host() except fs_dax_get_by_bdev() and it can easily use dax_get_by_host() instead. IIUC, fs_dax_get_by_host() was only introduced so that one could compile with CONFIG_FS_DAX=n and CONFIG_DAX=m. fs_dax_get_by_bdev() achieves the same purpose and hence it looks like fs_dax_get_by_host() is not needed anymore. Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx> --- drivers/dax/super.c | 2 +- include/linux/dax.h | 10 ---------- 2 files changed, 1 insertion(+), 11 deletions(-) Index: rhvgoyal-linux-fuse/drivers/dax/super.c =================================================================== --- rhvgoyal-linux-fuse.orig/drivers/dax/super.c 2020-01-03 11:19:57.616186062 -0500 +++ rhvgoyal-linux-fuse/drivers/dax/super.c 2020-01-03 11:20:08.941186062 -0500 @@ -61,7 +61,7 @@ struct dax_device *fs_dax_get_by_bdev(st { if (!blk_queue_dax(bdev->bd_queue)) return NULL; - return fs_dax_get_by_host(bdev->bd_disk->disk_name); + return dax_get_by_host(bdev->bd_disk->disk_name); } EXPORT_SYMBOL_GPL(fs_dax_get_by_bdev); #endif Index: rhvgoyal-linux-fuse/include/linux/dax.h =================================================================== --- rhvgoyal-linux-fuse.orig/include/linux/dax.h 2020-01-03 11:20:05.603186062 -0500 +++ rhvgoyal-linux-fuse/include/linux/dax.h 2020-01-03 11:20:08.942186062 -0500 @@ -129,11 +129,6 @@ static inline bool generic_fsdax_support sectors); } -static inline struct dax_device *fs_dax_get_by_host(const char *host) -{ - return dax_get_by_host(host); -} - static inline void fs_put_dax(struct dax_device *dax_dev) { put_dax(dax_dev); @@ -160,11 +155,6 @@ static inline bool generic_fsdax_support return false; } -static inline struct dax_device *fs_dax_get_by_host(const char *host) -{ - return NULL; -} - static inline void fs_put_dax(struct dax_device *dax_dev) { }