From 6fc4e3548598d10a5e947797a09cbc1b257a22ab Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@inktank.com>
Date: Thu, 30 Aug 2012 16:26:15 -0600
Subject: [PATCH] Btrfs: pass lockdep rwsem metadata to async commit
 transaction

The freeze rwsem is taken by sb_start_intwrite() and dropped during the
commit_ or end_transaction().  In the async case, that happens in a worker
thread.  Tell lockdep the calling thread is releasing ownership of the
rwsem and the async thread is picking it up.

XFS plays the same trick in fs/xfs/xfs_aops.c.

Signed-off-by: Sage Weil <sage@inktank.com>
---
Reading git-format-patch failed