md: export helper md_is_rdwr()

There are no functional changes for now, prepare to fix a deadlock for
dm-raid456.

Cc: stable@vger.kernel.org # v6.7+
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Acked-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240305072306.2562024-4-yukuai1@huaweicloud.com

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 0bf2f7a53ed8d890ed0ef4d2305fbff13afbe4be..55ecc05c17c65a13854076e9a0fa931741e4e279 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -99,18 +99,6 @@ static void mddev_detach(struct mddev *mddev);
 static void export_rdev(struct md_rdev *rdev, struct mddev *mddev);
 static void md_wakeup_thread_directly(struct md_thread __rcu *thread);
 
-enum md_ro_state {
-       MD_RDWR,
-       MD_RDONLY,
-       MD_AUTO_READ,
-       MD_MAX_STATE
-};
-
-static bool md_is_rdwr(struct mddev *mddev)
-{
-       return (mddev->ro == MD_RDWR);
-}
-
 /*
  * Default number of read corrections we'll attempt on an rdev
  * before ejecting it from the array. We divide the read error

diff --git a/drivers/md/md.h b/drivers/md/md.h
index dff2e333756d42ff8ab39e1ad88acbd3e4993483..a40e898fe57e5330e861081fc537f67f8d322fe9 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -569,6 +569,18 @@ enum recovery_flags {
        MD_RESYNCING_REMOTE,    /* remote node is running resync thread */
 };
 
+enum md_ro_state {
+       MD_RDWR,
+       MD_RDONLY,
+       MD_AUTO_READ,
+       MD_MAX_STATE
+};
+
+static inline bool md_is_rdwr(struct mddev *mddev)
+{
+       return (mddev->ro == MD_RDWR);
+}
+
 static inline int __must_check mddev_lock(struct mddev *mddev)
 {
        return mutex_lock_interruptible(&mddev->reconfig_mutex);