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Commit bdcd3c97 authored by Alexandru Moise's avatar Alexandru Moise Committed by David Sterba
Browse files

btrfs: cleanup btrfs_balance profile validity checks 



Improve readability by generalizing the profile validity checks.

Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarAlexandru Moise <00moses.alexander00@gmail.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent bb789152

fs/btrfs/volumes.c

+12 −9
Original line number Diff line number Diff line
@@ -3542,6 +3542,15 @@ static void __cancel_balance(struct btrfs_fs_info *fs_info) 
	atomic_set(&fs_info->mutually_exclusive_operation_running, 0);

}



/* Non-zero return value signifies invalidity */

static inline int validate_convert_profile(struct btrfs_balance_args *bctl_arg,

		u64 allowed)

{

	return ((bctl_arg->flags & BTRFS_BALANCE_ARGS_CONVERT) &&

		(!alloc_profile_is_valid(bctl_arg->target, 1) ||

		 (bctl_arg->target & ~allowed)));

}



/*

 * Should be called with both balance and volume mutexes held

 */
@@ -3599,27 +3608,21 @@ int btrfs_balance(struct btrfs_balance_control *bctl, 
	if (num_devices > 3)

		allowed |= (BTRFS_BLOCK_GROUP_RAID10 |

			    BTRFS_BLOCK_GROUP_RAID6);

	if ((bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) &&

	    (!alloc_profile_is_valid(bctl->data.target, 1) ||

	     (bctl->data.target & ~allowed))) {

	if (validate_convert_profile(&bctl->data, allowed)) {

		btrfs_err(fs_info, "unable to start balance with target "

			   "data profile %llu",

		       bctl->data.target);

		ret = -EINVAL;

		goto out;

	}

	if ((bctl->meta.flags & BTRFS_BALANCE_ARGS_CONVERT) &&

	    (!alloc_profile_is_valid(bctl->meta.target, 1) ||

	     (bctl->meta.target & ~allowed))) {

	if (validate_convert_profile(&bctl->meta, allowed)) {

		btrfs_err(fs_info,

			   "unable to start balance with target metadata profile %llu",

		       bctl->meta.target);

		ret = -EINVAL;

		goto out;

	}

	if ((bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) &&

	    (!alloc_profile_is_valid(bctl->sys.target, 1) ||

	     (bctl->sys.target & ~allowed))) {

	if (validate_convert_profile(&bctl->sys, allowed)) {

		btrfs_err(fs_info,

			   "unable to start balance with target system profile %llu",

		       bctl->sys.target);