From: Liu Bo <bo.li.liu@oracle.com>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH] Btrfs: remove rcu_barrier in btrfs_close_devices
Date: Tue, 10 Oct 2017 15:51:02 -0600 [thread overview]
Message-ID: <20171010215103.20828-1-bo.li.liu@oracle.com> (raw)
It was introduced because btrfs used to do blkdev_put in a deferred
work, now that btrfs has put blkdev in place, this rcu_barrier can be
removed.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
---
fs/btrfs/volumes.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 0e8f16c..d983cea 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -958,12 +958,6 @@ int btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
__btrfs_close_devices(fs_devices);
free_fs_devices(fs_devices);
}
- /*
- * Wait for rcu kworkers under __btrfs_close_devices
- * to finish all blkdev_puts so device is really
- * free when umount is done.
- */
- rcu_barrier();
return ret;
}
--
2.9.4
next reply other threads:[~2017-10-10 22:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-10 21:51 Liu Bo [this message]
2017-10-11 6:11 ` [PATCH] Btrfs: remove rcu_barrier in btrfs_close_devices Anand Jain
2017-10-11 7:41 ` Anand Jain
2017-10-11 17:02 ` Liu Bo
2017-10-30 16:25 ` David Sterba
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