aoe: provide file operations for debugfs files (1cf94797) · Commits · 戴 / test

drivers/block/aoe/aoeblk.c

+24 −1

Original line number	Diff line number	Diff line
		@@ -110,6 +110,24 @@ static ssize_t aoedisk_show_payload(struct device *dev,
		return snprintf(page, PAGE_SIZE, "%lu\n", d->maxbcnt);
		}

		static int aoedisk_debugfs_show(struct seq_file s, void ignored)
		{
		struct aoedev *d;
		unsigned long flags;

		d = s->private;
		spin_lock_irqsave(&d->lock, flags);
		seq_printf(s, "%s\n", d->gd->disk_name); /* place holder */
		spin_unlock_irqrestore(&d->lock, flags);

		return 0;
		}

		static int aoe_debugfs_open(struct inode inode, struct file file)
		{
		return single_open(file, aoedisk_debugfs_show, inode->i_private);
		}

		static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL);
		static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL);
		static DEVICE_ATTR(netif, S_IRUGO, aoedisk_show_netif, NULL);
		@@ -132,7 +150,12 @@ static const struct attribute_group attr_group = {
		.attrs = aoe_attrs,
		};

		static const struct file_operations aoe_debugfs_fops;
		static const struct file_operations aoe_debugfs_fops = {
		.open = aoe_debugfs_open,
		.read = seq_read,
		.llseek = seq_lseek,
		.release = single_release,
		};

		static void
		aoedisk_add_debugfs(struct aoedev *d)