md: Factor out is_md_suspended helper

This helper function will be used in next patch. It's easy for
understanding.

Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <song@kernel.org>

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 272cc5d..5ec9fdd 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -380,6 +380,13 @@ EXPORT_SYMBOL_GPL(md_new_event);
 static LIST_HEAD(all_mddevs);
 static DEFINE_SPINLOCK(all_mddevs_lock);
 
+static bool is_md_suspended(struct mddev *mddev)
+{
+       if (mddev->suspended)
+               return true;
+       else
+               return false;
+}
 /* Rather than calling directly into the personality make_request function,
  * IO requests come here first so that we can check if the device is
  * being suspended pending a reconfiguration.
@@ -389,7 +396,7 @@ static DEFINE_SPINLOCK(all_mddevs_lock);
  */
 static bool is_suspended(struct mddev *mddev, struct bio *bio)
 {
-       if (mddev->suspended)
+       if (is_md_suspended(mddev))
                return true;
        if (bio_data_dir(bio) != WRITE)
                return false;
@@ -434,7 +441,7 @@ check_suspended:
                goto check_suspended;
        }
 
-       if (atomic_dec_and_test(&mddev->active_io) && mddev->suspended)
+       if (atomic_dec_and_test(&mddev->active_io) && is_md_suspended(mddev))
                wake_up(&mddev->sb_wait);
 }
 EXPORT_SYMBOL(md_handle_request);
@@ -6219,7 +6226,7 @@ EXPORT_SYMBOL_GPL(md_stop_writes);
 static void mddev_detach(struct mddev *mddev)
 {
        md_bitmap_wait_behind_writes(mddev);
-       if (mddev->pers && mddev->pers->quiesce && !mddev->suspended) {
+       if (mddev->pers && mddev->pers->quiesce && !is_md_suspended(mddev)) {
                mddev->pers->quiesce(mddev, 1);
                mddev->pers->quiesce(mddev, 0);
        }
@@ -8531,7 +8538,7 @@ bool md_write_start(struct mddev *mddev, struct bio *bi)
                return true;
        wait_event(mddev->sb_wait,
                   !test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags) ||
-                  mddev->suspended);
+                  is_md_suspended(mddev));
        if (test_bit(MD_SB_CHANGE_PENDING, &mddev->sb_flags)) {
                percpu_ref_put(&mddev->writes_pending);
                return false;
@@ -9259,7 +9266,7 @@ void md_check_recovery(struct mddev *mddev)
                wake_up(&mddev->sb_wait);
        }
 
-       if (mddev->suspended)
+       if (is_md_suspended(mddev))
                return;
 
        if (mddev->bitmap)