[RESEND PATCH 2/3] btrfs: wrap check for BTRFS_FS_OPEN flag into function

[Anand Jain <anand.jain@oracle.com>]

2nd patch in preparation to make the BTRFS_FS_OPEN flag work irrespective
of the type of mount (rdonly or read-write-able). Bring the check for the
BTRFS_FS_OPEN flag into an inline function btrfs_fs_state_is_open_rw().

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 fs/btrfs/block-group.c | 4 ++--
 fs/btrfs/ctree.h       | 5 +++++
 fs/btrfs/disk-io.c     | 2 +-
 fs/btrfs/volumes.c     | 2 +-
 4 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index 8f73dc120290..bdb4007ba15f 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -1313,7 +1313,7 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info)
 	const bool async_trim_enabled = btrfs_test_opt(fs_info, DISCARD_ASYNC);
 	int ret = 0;
 
-	if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags))
+	if (!btrfs_fs_state_is_open_rw(fs_info))
 		return;
 
 	/*
@@ -1552,7 +1552,7 @@ void btrfs_reclaim_bgs_work(struct work_struct *work)
 	struct btrfs_block_group *bg;
 	struct btrfs_space_info *space_info;
 
-	if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags))
+	if (!btrfs_fs_state_is_open_rw(fs_info))
 		return;
 
 	if (!btrfs_should_reclaim(fs_info))
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 171dd25def8b..1a77a0123c44 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -4039,6 +4039,11 @@ static inline bool btrfs_is_data_reloc_root(const struct btrfs_root *root)
 	return root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID;
 }
 
+static inline bool btrfs_fs_state_is_open_rw(const struct btrfs_fs_info *fs_info)
+{
+	return test_bit(BTRFS_FS_OPEN, &fs_info->flags);
+}
+
 /*
  * We use page status Private2 to indicate there is an ordered extent with
  * unfinished IO.
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 624070f144d0..e25e0104a9f0 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1984,7 +1984,7 @@ static int cleaner_kthread(void *arg)
 		 * Do not do anything if we might cause open_ctree() to block
 		 * before we have finished mounting the filesystem.
 		 */
-		if (!test_bit(BTRFS_FS_OPEN, &fs_info->flags))
+		if (!btrfs_fs_state_is_open_rw(fs_info))
 			goto sleep;
 
 		if (!mutex_trylock(&fs_info->cleaner_mutex))
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 35b6b87464f7..a06a35dc8156 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7610,7 +7610,7 @@ int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info)
 	 * and at this point there can't be any concurrent task modifying the
 	 * chunk tree, to keep it simple, just skip locking on the chunk tree.
 	 */
-	ASSERT(!test_bit(BTRFS_FS_OPEN, &fs_info->flags));
+	ASSERT(!btrfs_fs_state_is_open_rw(fs_info));
 	path->skip_locking = 1;
 
 	/*
-- 
2.33.1