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, 4 insertions, 4 deletions

diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index f4617cf07069..781c1399c6a3 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -795,7 +795,7 @@ SYSCALL_DEFINE4(mq_open, const char __user *, u_name, int, oflag, umode_t, mode,
 
         ro = mnt_want_write(mnt);       /* we'll drop it in any case */
         error = 0;
-        mutex_lock(&d_inode(root)->i_mutex);
+        inode_lock(d_inode(root));
         path.dentry = lookup_one_len(name->name, root, strlen(name->name));
         if (IS_ERR(path.dentry)) {
                 error = PTR_ERR(path.dentry);
@@ -841,7 +841,7 @@ out_putfd:
                 put_unused_fd(fd);
                 fd = error;
         }
-        mutex_unlock(&d_inode(root)->i_mutex);
+        inode_unlock(d_inode(root));
         if (!ro)
                 mnt_drop_write(mnt);
 out_putname:
@@ -866,7 +866,7 @@ SYSCALL_DEFINE1(mq_unlink, const char __user *, u_name)
         err = mnt_want_write(mnt);
         if (err)
                 goto out_name;
-        mutex_lock_nested(&d_inode(mnt->mnt_root)->i_mutex, I_MUTEX_PARENT);
+        inode_lock_nested(d_inode(mnt->mnt_root), I_MUTEX_PARENT);
         dentry = lookup_one_len(name->name, mnt->mnt_root,
                                 strlen(name->name));
         if (IS_ERR(dentry)) {
@@ -884,7 +884,7 @@ SYSCALL_DEFINE1(mq_unlink, const char __user *, u_name)
         dput(dentry);
 
 out_unlock:
-        mutex_unlock(&d_inode(mnt->mnt_root)->i_mutex);
+        inode_unlock(d_inode(mnt->mnt_root));
         if (inode)
                 iput(inode);
         mnt_drop_write(mnt);