linux-kernel - How to tell whether a struct file is held by a process?

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Message-ID: <Pine.LNX.4.44L0.0905191251170.10557-100000@iolanthe.rowland.org>
Date:	Tue, 19 May 2009 12:57:21 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Kernel development list <linux-kernel@...r.kernel.org>
Subject: How to tell whether a struct file is held by a process?

What's the best way to tell whether the current process has a
particular struct file among its open files?  Is there any better way
to find out than blindly calling fget() for each possible fd?

Is this a totally insane thing to do?

Alan Stern

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