4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jan Kara jack@suse.cz
commit 967d1dc144b50ad005e5eecdfadfbcfb399ffff6 upstream.
__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 Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/block/loop.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-)
--- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1575,12 +1575,15 @@ out: 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) { @@ -1590,7 +1593,7 @@ static void __lo_release(struct loop_dev */ err = loop_clr_fd(lo); if (!err) - return; + goto unlock_index; } else { /* * Otherwise keep thread (if running) and config, @@ -1600,12 +1603,7 @@ static void __lo_release(struct loop_dev }
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); }