diff mbox series

[03/15] loop: Fold __loop_release into loop_release

Message ID 20181010100415.26525-4-jack@suse.cz (mailing list archive)
State New, archived
Headers show
Series loop: Fix oops and possible deadlocks | expand

Commit Message

Jan Kara Oct. 10, 2018, 10:04 a.m. UTC 
__loop_release() has a single call site. Fold it there. This is
currently not a huge win but it will make following replacement of
loop_index_mutex more obvious.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 drivers/block/loop.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index d0f1b7106572..cc43d835fe6f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1642,12 +1642,15 @@  static int lo_open(struct block_device *bdev, fmode_t mode)
 	return err;
 }
 
-static void __lo_release(struct loop_device *lo)
+static void lo_release(struct gendisk *disk, fmode_t mode)
 {
+	struct loop_device *lo;
 	int err;
 
+	mutex_lock(&loop_index_mutex);
+	lo = disk->private_data;
 	if (atomic_dec_return(&lo->lo_refcnt))
-		return;
+		goto unlock_index;
 
 	mutex_lock(&loop_ctl_mutex);
 	if (lo->lo_flags & LO_FLAGS_AUTOCLEAR) {
@@ -1657,7 +1660,7 @@  static void __lo_release(struct loop_device *lo)
 		 */
 		err = loop_clr_fd(lo);
 		if (!err)
-			return;
+			goto unlock_index;
 	} else if (lo->lo_state == Lo_bound) {
 		/*
 		 * Otherwise keep thread (if running) and config,
@@ -1668,12 +1671,7 @@  static void __lo_release(struct loop_device *lo)
 	}
 
 	mutex_unlock(&loop_ctl_mutex);
-}
-
-static void lo_release(struct gendisk *disk, fmode_t mode)
-{
-	mutex_lock(&loop_index_mutex);
-	__lo_release(disk->private_data);
+unlock_index:
 	mutex_unlock(&loop_index_mutex);
 }