From bbf0d0062da2b3e1e239e381f8ac20971ef1b2ed Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 19 Oct 2007 09:23:07 -0400
Subject: [PATCH] Btrfs: KM_IRQ0 usage in end_io handling

endio handling is typically called with interrupts disabled, but can
also be called with it enabled. So save interrupts before using KM_IRQ0
to be completely safe.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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