btrfs: export btrfs_set_prop

Make btrfs_set_prop() a non-static function, so that it can be called
from btrfs_ioctl_setflags(). We need btrfs_set_prop() instead of
btrfs_set_prop_trans() so that we can use the transaction which is
already started in the current thread.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/props.c

@@ -72,7 +72,7 @@ int btrfs_validate_prop(const char *name, const char *value, size_t value_len)
 	return handler->validate(value, value_len);
 }
 
-static int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode,
+int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode,
 		   const char *name, const char *value, size_t value_len,
 		   int flags)
 {

fs/btrfs/props.h

@@ -12,6 +12,9 @@ void __init btrfs_props_init(void);
 
 int btrfs_set_prop_trans(struct inode *inode, const char *name,
 			 const char *value, size_t value_len, int flags);
+int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode,
+		   const char *name, const char *value, size_t value_len,
+		   int flags);
 int btrfs_validate_prop(const char *name, const char *value, size_t value_len);
 
 int btrfs_load_inode_props(struct inode *inode, struct btrfs_path *path);