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Revert "loop: Fold __loop_release into loop_release"

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This reverts commit 7d839c10b8 which is
commit 967d1dc144 upstream.

It does not work properly in the 4.9.y tree and causes more problems
than it fixes, so revert it.

Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Reported-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2019-02-27 15:02:03 +01:00
parent c6ae51ad49
commit e5c5b8ed71
1 changed files with 9 additions and 7 deletions
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16
drivers/block/loop.c
View file

@ -1575,15 +1575,12 @@ static int lo_open(struct block_device *bdev, fmode_t mode)
return err;
}
static void lo_release(struct gendisk *disk, fmode_t mode)
static void __lo_release(struct loop_device *lo)
{
struct loop_device *lo;
int err;
mutex_lock(&loop_index_mutex);
lo = disk->private_data;
if (atomic_dec_return(&lo->lo_refcnt))
goto unlock_index;
return;
mutex_lock(&loop_ctl_mutex);
if (lo->lo_flags & LO_FLAGS_AUTOCLEAR) {
@ -1593,7 +1590,7 @@ static void lo_release(struct gendisk *disk, fmode_t mode)
*/
err = loop_clr_fd(lo);
if (!err)
goto unlock_index;
return;
} else {
/*
* Otherwise keep thread (if running) and config,
@ -1603,7 +1600,12 @@ static void lo_release(struct gendisk *disk, fmode_t mode)
}
mutex_unlock(&loop_ctl_mutex);
unlock_index:
}
static void lo_release(struct gendisk *disk, fmode_t mode)
{
mutex_lock(&loop_index_mutex);
__lo_release(disk->private_data);
mutex_unlock(&loop_index_mutex);
}