From 87b95ce0964c016ede92763be9c164e49f1019e9 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 10 Jan 2015 19:01:08 -0500
Subject: [PATCH] switch the IO-triggering parts of umount to fs_pin

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Reading git-format-patch failed