int oflag, mode_t mode, struct mq_attr __user *u_attr)
{
struct mq_attr attr;
+ struct file *result;
int ret;
if (u_attr) {
}
mode &= ~current->fs->umask;
+ ret = mnt_want_write(mqueue_mnt);
+ if (ret)
+ goto out;
ret = vfs_create(dir->d_inode, dentry, mode, NULL);
dentry->d_fsdata = NULL;
if (ret)
- goto out;
-
- return dentry_open(dentry, mqueue_mnt, oflag);
-
+ goto out_drop_write;
+
+ result = dentry_open(dentry, mqueue_mnt, oflag);
+ /*
+ * dentry_open() took a persistent mnt_want_write(),
+ * so we can now drop this one.
+ */
+ mnt_drop_write(mqueue_mnt);
+ return result;
+
+out_drop_write:
+ mnt_drop_write(mqueue_mnt);
out:
dput(dentry);
mntput(mqueue_mnt);
inode = dentry->d_inode;
if (inode)
atomic_inc(&inode->i_count);
-
+ err = mnt_want_write(mqueue_mnt);
+ if (err)
+ goto out_err;
err = vfs_unlink(dentry->d_parent->d_inode, dentry);
+ mnt_drop_write(mqueue_mnt);
out_err:
dput(dentry);