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Commit fac03c8d authored by David Sterba's avatar David Sterba
Browse files

btrfs: move fs_info::fs_frozen to the flags 



We can keep the state among the other fs_info flags, there's no reason
why fs_frozen would need to be separate.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 79b4f4c6

fs/btrfs/ctree.h

+2 −3
Original line number Diff line number Diff line
@@ -716,6 +716,8 @@ struct btrfs_delayed_root; 
#define BTRFS_FS_LOG1_ERR			12

#define BTRFS_FS_LOG2_ERR			13

#define BTRFS_FS_QUOTA_OVERRIDE			14

/* Used to record internally whether fs has been frozen */

#define BTRFS_FS_FROZEN				15



/*

 * Indicate that a whole-filesystem exclusive operation is running
@@ -1107,9 +1109,6 @@ struct btrfs_fs_info { 
	 */

	struct list_head pinned_chunks;



	/* Used to record internally whether fs has been frozen */

	int fs_frozen;



	/* Cached block sizes */

	u32 nodesize;

	u32 sectorsize;

fs/btrfs/disk-io.c

+0 −1
Original line number Diff line number Diff line
@@ -2661,7 +2661,6 @@ int open_ctree(struct super_block *sb, 
	atomic_set(&fs_info->qgroup_op_seq, 0);

	atomic_set(&fs_info->reada_works_cnt, 0);

	atomic64_set(&fs_info->tree_mod_seq, 0);

	fs_info->fs_frozen = 0;

	fs_info->sb = sb;

	fs_info->max_inline = BTRFS_DEFAULT_MAX_INLINE;

	fs_info->metadata_ratio = 0;

fs/btrfs/super.c

+4 −2
Original line number Diff line number Diff line
@@ -2242,7 +2242,7 @@ static int btrfs_freeze(struct super_block *sb) 
	struct btrfs_fs_info *fs_info = btrfs_sb(sb);

	struct btrfs_root *root = fs_info->tree_root;



	fs_info->fs_frozen = 1;

	set_bit(BTRFS_FS_FROZEN, &fs_info->flags);

	/*

	 * We don't need a barrier here, we'll wait for any transaction that

	 * could be in progress on other threads (and do delayed iputs that
@@ -2261,7 +2261,9 @@ static int btrfs_freeze(struct super_block *sb) 


static int btrfs_unfreeze(struct super_block *sb)

{

	btrfs_sb(sb)->fs_frozen = 0;

	struct btrfs_fs_info *fs_info = btrfs_sb(sb);



	clear_bit(BTRFS_FS_FROZEN, &fs_info->flags);

	return 0;

}

fs/btrfs/transaction.c

+2 −1
Original line number Diff line number Diff line
@@ -2314,7 +2314,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans) 
	 * it'll result in deadlock about SB_FREEZE_FS.

	 */

	if (current != fs_info->transaction_kthread &&

	    current != fs_info->cleaner_kthread && !fs_info->fs_frozen)

	    current != fs_info->cleaner_kthread &&

	    !test_bit(BTRFS_FS_FROZEN, &fs_info->flags))

		btrfs_run_delayed_iputs(fs_info);



	return ret;