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[176.3.100.11]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a00c11a9d2sm30457755e9.3.2026.09.28.13.12.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Sep 2026 13:12:52 -0700 (PDT) From: Abd-Alrhman Masalkhi To: song@kernel.org, yukuai@fygo.io, chengzhihao1@huawei.com, magiclinan@didiglobal.com, xiao@kernel.org, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, bmarzins@redhat.com, arnd@arndb.de, gregkh@linuxfoundation.org Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, dm-devel@lists.linux.dev, Abd-Alrhman Masalkhi Subject: [PATCH 1/2] md: make mddev lookup and ioctl helpers non-static Date: Mon, 28 Sep 2026 20:12:23 +0000 Message-ID: <20260928201224.3602262-2-abd.masalkhi@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260928201224.3602262-1-abd.masalkhi@gmail.com> References: <20260928201224.3602262-1-abd.masalkhi@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit A following patch adds an md misc control device, so that arrays can be managed without opening the md block device. Its code lives in a separate file and needs to look up arrays and reuse existing ioctl helpers. Signed-off-by: Abd-Alrhman Masalkhi --- drivers/md/md.c | 10 +++++----- drivers/md/md.h | 5 +++++ 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 680b34a63cb3..b5027d65c6d8 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -364,8 +364,8 @@ EXPORT_SYMBOL_GPL(md_new_event); * Enables to iterate over all existing md arrays * all_mddevs_lock protects this list. */ -static LIST_HEAD(all_mddevs); -static DEFINE_SPINLOCK(all_mddevs_lock); +LIST_HEAD(all_mddevs); +DEFINE_SPINLOCK(all_mddevs_lock); static bool is_md_suspended(struct mddev *mddev) { @@ -623,7 +623,7 @@ bool md_flush_request(struct mddev *mddev, struct bio *bio) } EXPORT_SYMBOL(md_flush_request); -static inline struct mddev *mddev_get(struct mddev *mddev) +struct mddev *mddev_get(struct mddev *mddev) { lockdep_assert_held(&all_mddevs_lock); @@ -8101,7 +8101,7 @@ static void put_cluster_ops(struct mddev *mddev) * Any differences that cannot be handled will cause an error. * Normally, only one change can be managed at a time. */ -static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) +int update_array_info(struct mddev *mddev, mdu_array_info_t *info) { int rv = 0; int cnt = 0; @@ -8227,7 +8227,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info) return rv; } -static int set_disk_faulty(struct mddev *mddev, dev_t dev) +int set_disk_faulty(struct mddev *mddev, dev_t dev) { struct md_rdev *rdev; int err = 0; diff --git a/drivers/md/md.h b/drivers/md/md.h index b6d2e8929a0f..cb8760521764 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -953,6 +953,7 @@ extern int mddev_init(struct mddev *mddev); extern void mddev_destroy(struct mddev *mddev); void md_init_stacking_limits(struct queue_limits *lim); struct mddev *md_alloc(dev_t dev, char *name); +extern struct mddev *mddev_get(struct mddev *mddev); void mddev_put(struct mddev *mddev); extern int md_run(struct mddev *mddev); extern int md_start(struct mddev *mddev); @@ -974,6 +975,10 @@ extern void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev); struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr); struct md_rdev *md_find_rdev_rcu(struct mddev *mddev, dev_t dev); +int update_array_info(struct mddev *mddev, mdu_array_info_t *info); + +extern struct list_head all_mddevs; +extern spinlock_t all_mddevs_lock; static inline bool is_rdev_broken(struct md_rdev *rdev) { -- 2.43.0