[PATCH 02/11] NFSv4/flexfiles: drop the now-unused per-mirror lock

[Mike Snitzer <snitzer@kernel.org>]

From: Jonathan Flynn <jonathan.flynn@hammerspace.com>

With layoutstats accounting moved to the per-stripe lock, nothing takes
mirror->lock any more.  Remove it.

The only users of mirror->lock in this tree were the layoutstats paths
the previous patch converted.

Signed-off-by: Jonathan Flynn <jonathan.flynn@hammerspace.com>
Signed-off-by: Mike Snitzer <snitzer@hammerspace.com>
---
 fs/nfs/flexfilelayout/flexfilelayout.c | 1 -
 fs/nfs/flexfilelayout/flexfilelayout.h | 1 -
 2 files changed, 2 deletions(-)

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index bac0b7f559201..7fc1369df8439 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -280,7 +280,6 @@ static struct nfs4_ff_layout_mirror *ff_layout_alloc_mirror(u32 dss_count,
 	if (mirror == NULL)
 		return NULL;
 
-	spin_lock_init(&mirror->lock);
 	refcount_set(&mirror->ref, 1);
 	INIT_LIST_HEAD(&mirror->mirrors);
 
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h
index 54aa492bc0bac..8fa2d8851166a 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.h
+++ b/fs/nfs/flexfilelayout/flexfilelayout.h
@@ -99,7 +99,6 @@ struct nfs4_ff_layout_mirror {
 	u32				dss_count;
 	struct nfs4_ff_layout_ds_stripe *dss;
 	refcount_t			ref;
-	spinlock_t			lock;
 	unsigned long			flags;
 	u32				report_interval;
 };
-- 
2.52.0