linux-kernel - Re: [patch 7/7] fs, notify: Add procfs fdinfo helper v6

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Date:	Mon, 26 Nov 2012 16:41:57 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Al Viro <viro@...iv.linux.org.uk>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	James Bottomley <jbottomley@...allels.com>,
	Matthew Helsley <matt.helsley@...il.com>,
	aneesh.kumar@...ux.vnet.ibm.com, bfields@...ldses.org,
	oleg@...hat.com, rientjes@...gle.com, tvrtko.ursulin@...lan.co.uk,
	Andrey Vagin <avagin@...nvz.org>
Subject: Re: [patch 7/7] fs, notify: Add procfs fdinfo helper v6

On Wed, 14 Nov 2012 19:19:44 +0400
Cyrill Gorcunov <gorcunov@...nvz.org> wrote:

> This allow us to print out fsnotify details such as
> watchee inode, device, mask and optionally a file handle.

This helps the compiler quite a lot:

--- a/fs/notify/fdinfo.c~fs-notify-add-procfs-fdinfo-helper-v7-fix
+++ a/fs/notify/fdinfo.c
@@ -26,13 +26,13 @@ static int show_fdinfo(struct seq_file *
 	struct fsnotify_mark *mark;
 	int ret = 0;
 
-	spin_lock(&group->mark_lock);
+	mutex_lock(&group->mark_mutex);
 	list_for_each_entry(mark, &group->marks_list, g_list) {
 		ret = show(m, mark);
 		if (ret)
 			break;
 	}
-	spin_unlock(&group->mark_lock);
+	mutex_unlock(&group->mark_mutex);
 	return ret;
 }
 

But I rather worry that the code which you sent clearly wasn't the code
which you tested.  Please retest and confirm that I now have the correct
code?

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