From: Steven Whitehouse <swhiteho@redhat.com>
Date: Tue, 5 Sep 2006 19:56:17 +0000 (-0400)
Subject: [GFS2] Add a comment in ops_export.c
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=7b62536141927212158ab84ce2afda9319ae6f2d;p=deliverable%2Flinux.git

[GFS2] Add a comment in ops_export.c

Ass a comment explaining the slightly odd construct used to
pass error values back.

Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---

diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index 4b8c6a9893e4..470e8829e7f4 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -182,6 +182,10 @@ static struct dentry *gfs2_get_parent(struct dentry *child)
 
 	if (!inode)
 		return ERR_PTR(-ENOENT);
+	/*
+	 * In case of an error, @inode carries the error value, and we
+	 * have to return that as a(n invalid) pointer to dentry.
+	 */
 	if (IS_ERR(inode))
 		return ERR_PTR(PTR_ERR(inode));