From e3b318d14df7d6d04f37ce10f9a2f33ca3d550be Mon Sep 17 00:00:00 2001
From: Omar Sandoval <osandov@fb.com>
Date: Thu, 16 Apr 2020 14:46:20 -0700
Subject: btrfs: convert btrfs_dio_private->pending_bios to refcount_t

This is really a reference count now, so convert it to refcount_t and
rename it to refs.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/btrfs_inode.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'fs/btrfs/btrfs_inode.h')

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index ad36685ce046..b965fa5429ec 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -7,6 +7,7 @@
 #define BTRFS_INODE_H
 
 #include <linux/hash.h>
+#include <linux/refcount.h>
 #include "extent_map.h"
 #include "extent_io.h"
 #include "ordered-data.h"
@@ -302,8 +303,11 @@ struct btrfs_dio_private {
 	u64 disk_bytenr;
 	u64 bytes;
 
-	/* number of bios pending for this dio */
-	atomic_t pending_bios;
+	/*
+	 * References to this structure. There is one reference per in-flight
+	 * bio plus one while we're still setting up.
+	 */
+	refcount_t refs;
 
 	/* IO errors */
 	int errors;
-- 
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