btrfs: switch extent_buffer spinning_writers from atomic to int

The spinning_writers is either 0 or 1 and always updated under the lock,
so we don't need the atomic_t semantics.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index 5feb01147e19..270667627977 100644
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -15,19 +15,19 @@
 #ifdef CONFIG_BTRFS_DEBUG
 static void btrfs_assert_spinning_writers_get(struct extent_buffer *eb)
 {
-        WARN_ON(atomic_read(&eb->spinning_writers));
-        atomic_inc(&eb->spinning_writers);
+        WARN_ON(eb->spinning_writers);
+        eb->spinning_writers++;
 }
 
 static void btrfs_assert_spinning_writers_put(struct extent_buffer *eb)
 {
-        WARN_ON(atomic_read(&eb->spinning_writers) != 1);
-        atomic_dec(&eb->spinning_writers);
+        WARN_ON(eb->spinning_writers != 1);
+        eb->spinning_writers--;
 }
 
 static void btrfs_assert_no_spinning_writers(struct extent_buffer *eb)
 {
-        WARN_ON(atomic_read(&eb->spinning_writers));
+        WARN_ON(eb->spinning_writers);
 }
 
 static void btrfs_assert_spinning_readers_get(struct extent_buffer *eb)