From 4881e6c0f0422fedadb0ddb085cdaa58feb257b1 Mon Sep 17 00:00:00 2001
From: Robert Baldyga <robert.baldyga@intel.com>
Date: Wed, 24 Aug 2022 21:26:00 +0200
Subject: [PATCH] Remove casdsk_disk mode

The mode is no longer needed. Remove remaining dead code.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
---
 modules/cas_disk/disk.h    | 16 ----------------
 modules/cas_disk/exp_obj.c | 14 +-------------
 2 files changed, 1 insertion(+), 29 deletions(-)

diff --git a/modules/cas_disk/disk.h b/modules/cas_disk/disk.h
index 4c2b658..395bf26 100644
--- a/modules/cas_disk/disk.h
+++ b/modules/cas_disk/disk.h
@@ -13,12 +13,8 @@
 
 struct casdsk_exp_obj;
 
-#define CASDSK_MODE_ATTACHED		(1 << 1)
-#define CASDSK_MODE_SHUTDOWN		(1 << 2)
-
 struct casdsk_disk {
 	uint32_t id;
-	atomic_t mode;
 	char *path;
 
 	struct mutex lock;
@@ -61,16 +57,4 @@ static inline struct casdsk_disk *casdsk_kobj_to_disk(struct kobject *kobj)
 	return container_of(kobj, struct casdsk_disk, kobj);
 }
 
-static inline bool casdsk_disk_is_attached(struct casdsk_disk *dsk)
-{
-	return (atomic_read(&dsk->mode) & CASDSK_MODE_ATTACHED) ==
-			CASDSK_MODE_ATTACHED;
-}
-
-static inline bool casdsk_disk_is_shutdown(struct casdsk_disk *dsk)
-{
-	return (atomic_read(&dsk->mode) & CASDSK_MODE_SHUTDOWN) ==
-			CASDSK_MODE_SHUTDOWN;
-}
-
 #endif
diff --git a/modules/cas_disk/exp_obj.c b/modules/cas_disk/exp_obj.c
index b59aba7..37605d0 100644
--- a/modules/cas_disk/exp_obj.c
+++ b/modules/cas_disk/exp_obj.c
@@ -38,21 +38,10 @@ void casdsk_deinit_exp_objs(void)
 	kmem_cache_destroy(casdsk_module->exp_obj_cache);
 }
 
-static inline void _casdsk_exp_obj_handle_bio_att(struct casdsk_disk *dsk,
-						struct bio *bio)
-{
-	dsk->exp_obj->ops->submit_bio(dsk, bio, dsk->private);
-}
-
 static inline void _casdsk_exp_obj_handle_bio(struct casdsk_disk *dsk,
 					    struct bio *bio)
 {
-	if (likely(casdsk_disk_is_attached(dsk)))
-		_casdsk_exp_obj_handle_bio_att(dsk, bio);
-	else if (casdsk_disk_is_shutdown(dsk))
-		CAS_BIO_ENDIO(bio, CAS_BIO_BISIZE(bio), CAS_ERRNO_TO_BLK_STS(-EIO));
-	else
-		BUG();
+	dsk->exp_obj->ops->submit_bio(dsk, bio, dsk->private);
 }
 
 static MAKE_RQ_RET_TYPE _casdsk_exp_obj_submit_bio(struct bio *bio)
@@ -553,7 +542,6 @@ int casdsk_exp_obj_activate(struct casdsk_disk *dsk)
 	kfree(path);
 
 	dsk->exp_obj->activated = true;
-	atomic_set(&dsk->mode, CASDSK_MODE_ATTACHED);
 	add_disk(dsk->exp_obj->gd);
 
 	result = bd_claim_by_disk(dsk->bd, dsk, dsk->exp_obj->gd);