restore killability of old mutex_lock_killable(&inode->i_mutex) users

[cascardo/linux.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 4e70069..c24473f 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -846,11 +846,9 @@ static noinline int btrfs_mksubvol(struct path *parent,
        struct dentry *dentry;
        int error;
 
-       inode_lock_nested(dir, I_MUTEX_PARENT);
-       // XXX: should've been
-       // mutex_lock_killable_nested(&dir->i_mutex, I_MUTEX_PARENT);
-       // if (error == -EINTR)
-       //      return error;
+       error = down_write_killable_nested(&dir->i_rwsem, I_MUTEX_PARENT);
+       if (error == -EINTR)
+               return error;
 
        dentry = lookup_one_len(name, parent->dentry, namelen);
        error = PTR_ERR(dentry);
@@ -2377,11 +2375,9 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
                goto out;
 
 
-       inode_lock_nested(dir, I_MUTEX_PARENT);
-       // XXX: should've been
-       // err = mutex_lock_killable_nested(&dir->i_mutex, I_MUTEX_PARENT);
-       // if (err == -EINTR)
-       //      goto out_drop_write;
+       err = down_write_killable_nested(&dir->i_rwsem, I_MUTEX_PARENT);
+       if (err == -EINTR)
+               goto out_drop_write;
        dentry = lookup_one_len(vol_args->name, parent, namelen);
        if (IS_ERR(dentry)) {
                err = PTR_ERR(dentry);
@@ -2571,7 +2567,7 @@ out_dput:
        dput(dentry);
 out_unlock_dir:
        inode_unlock(dir);
-//out_drop_write:
+out_drop_write:
        mnt_drop_write_file(file);
 out:
        kfree(vol_args);