From 1c3063b6dbfa03e469a53371fae149a022a41bfd Mon Sep 17 00:00:00 2001
From: Anand Jain <anand.jain@oracle.com>
Date: Mon, 4 Dec 2017 12:54:56 +0800
Subject: [PATCH] btrfs: cleanup device states define
BTRFS_DEV_STATE_FLUSH_SENT
Currently device state is being managed by each individual int
variable such as struct btrfs_device::is_tgtdev_for_dev_replace.
Instead of that declare btrfs_device::dev_state
BTRFS_DEV_STATE_FLUSH_SENT and use the bit operations.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
fs/btrfs/disk-io.c | 6 +++---
fs/btrfs/volumes.h | 1 +
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 4f7d2a38865c4..392d6cde4308e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3348,7 +3348,7 @@ static void write_dev_flush(struct btrfs_device *device)
bio->bi_private = &device->flush_wait;
btrfsic_submit_bio(bio);
- device->flush_bio_sent = 1;
+ set_bit(BTRFS_DEV_STATE_FLUSH_SENT, &device->dev_state);
}
/*
@@ -3358,10 +3358,10 @@ static blk_status_t wait_dev_flush(struct btrfs_device *device)
{
struct bio *bio = device->flush_bio;
- if (!device->flush_bio_sent)
+ if (!test_bit(BTRFS_DEV_STATE_FLUSH_SENT, &device->dev_state))
return BLK_STS_OK;
- device->flush_bio_sent = 0;
+ clear_bit(BTRFS_DEV_STATE_FLUSH_SENT, &device->dev_state);
wait_for_completion_io(&device->flush_wait);
return bio->bi_status;
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 2ac123154c8d1..3e3ae44b6ccc6 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -51,6 +51,7 @@ struct btrfs_pending_bios {
#define BTRFS_DEV_STATE_IN_FS_METADATA (1)
#define BTRFS_DEV_STATE_MISSING (2)
#define BTRFS_DEV_STATE_REPLACE_TGT (3)
+#define BTRFS_DEV_STATE_FLUSH_SENT (4)
struct btrfs_device {
struct list_head dev_list;
--
2.30.2