wrappers for ->i_mutex access

parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).

Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index 2c84683aada5..77f5d17779d6 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -455,12 +455,12 @@ static int blkdev_daxset(struct block_device *bdev, unsigned long argp)
         if (arg && !blkdev_dax_capable(bdev))
                 return -ENOTTY;
 
-        mutex_lock(&bdev->bd_inode->i_mutex);
+        inode_lock(bdev->bd_inode);
         if (bdev->bd_map_count == 0)
                 inode_set_flags(bdev->bd_inode, arg, S_DAX);
         else
                 rc = -EBUSY;
-        mutex_unlock(&bdev->bd_inode->i_mutex);
+        inode_unlock(bdev->bd_inode);
         return rc;
 }
 #else