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From:   Masahiro Yamada <masahiroy@kernel.org>
To:     Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org,
        Masahiro Yamada <masahiroy@kernel.org>
Subject: [RESEND PATCH 4/4] block: move CONFIG_BLOCK guard to top Makefile
Date:   Mon, 27 Sep 2021 23:00:00 +0900
Message-Id: <20210927140000.866249-5-masahiroy@kernel.org>
In-Reply-To: <20210927140000.866249-1-masahiroy@kernel.org>
References: <20210927140000.866249-1-masahiroy@kernel.org>
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Every object under block/ depends on CONFIG_BLOCK.

Move the guard to the top Makefile since there is no point to
descend into block/ if CONFIG_BLOCK=n.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Makefile       | 3 ++-
 block/Makefile | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 60923c2f41d5..0bcaa9e30fdf 100644
--- a/Makefile
+++ b/Makefile
@@ -1115,7 +1115,8 @@ export MODORDER := $(extmod_prefix)modules.order
 export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps
 
 ifeq ($(KBUILD_EXTMOD),)
-core-y		+= kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
+core-y			+= kernel/ certs/ mm/ fs/ ipc/ security/ crypto/
+core-$(CONFIG_BLOCK)	+= block/
 
 vmlinux-dirs	:= $(patsubst %/,%,$(filter %/, \
 		     $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
diff --git a/block/Makefile b/block/Makefile
index 41aa1ba69c90..74df168729ec 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -3,7 +3,7 @@
 # Makefile for the kernel block layer
 #
 
-obj-$(CONFIG_BLOCK) := bdev.o fops.o bio.o elevator.o blk-core.o blk-sysfs.o \
+obj-y		:= bdev.o fops.o bio.o elevator.o blk-core.o blk-sysfs.o \
 			blk-flush.o blk-settings.o blk-ioc.o blk-map.o \
 			blk-exec.o blk-merge.o blk-timeout.o \
 			blk-lib.o blk-mq.o blk-mq-tag.o blk-stat.o \
-- 
2.30.2