/* This routine is guarded by dqonoff_mutex mutex */
static void add_dquot_ref(struct super_block *sb, int type)
{
- struct inode *inode;
+ struct inode *inode, *old_inode = NULL;
-restart:
spin_lock(&inode_lock);
list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
if (!atomic_read(&inode->i_writecount))
__iget(inode);
spin_unlock(&inode_lock);
+ iput(old_inode);
sb->dq_op->initialize(inode, type);
- iput(inode);
- /* As we may have blocked we had better restart... */
- goto restart;
+ /* We hold a reference to 'inode' so it couldn't have been
+ * removed from s_inodes list while we dropped the inode_lock.
+ * We cannot iput the inode now as we can be holding the last
+ * reference and we cannot iput it under inode_lock. So we
+ * keep the reference and iput it later. */
+ old_inode = inode;
+ spin_lock(&inode_lock);
}
spin_unlock(&inode_lock);
+ iput(old_inode);
}
/* Return 0 if dqput() won't block (note that 1 doesn't necessarily mean blocking) */
truncate_inode_pages(&toputinode[cnt]->i_data, 0);
mutex_unlock(&toputinode[cnt]->i_mutex);
mark_inode_dirty(toputinode[cnt]);
- iput(toputinode[cnt]);
}
+ iput(toputinode[cnt]);
mutex_unlock(&dqopt->dqonoff_mutex);
}
if (sb->s_bdev)
error = path_lookup(path, LOOKUP_FOLLOW, &nd);
if (error < 0)
return error;
- error = security_quota_on(nd.dentry);
+ error = security_quota_on(nd.path.dentry);
if (error)
goto out_path;
/* Quota file not on the same filesystem? */
- if (nd.mnt->mnt_sb != sb)
+ if (nd.path.mnt->mnt_sb != sb)
error = -EXDEV;
else
- error = vfs_quota_on_inode(nd.dentry->d_inode, type, format_id);
+ error = vfs_quota_on_inode(nd.path.dentry->d_inode, type,
+ format_id);
out_path:
- path_release(&nd);
+ path_put(&nd.path);
return error;
}