Commit d153fc55 authored by Filipe Manana's avatar Filipe Manana Committed by David Sterba
Browse files

btrfs: remove no longer used btrfs_migrate_to_delayed_refs_rsv() 



The function btrfs_migrate_to_delayed_refs_rsv() is no longer used.
Its last use was removed in commit 2f6397e4 ("btrfs: don't refill
whole delayed refs block reserve when starting transaction").
So remove the function.

Reviewed-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarFilipe Manana <fdmanana@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 55a2f388

fs/btrfs/delayed-ref.c

+0 −42
Original line number Diff line number Diff line
@@ -194,48 +194,6 @@ void btrfs_dec_delayed_refs_rsv_bg_updates(struct btrfs_fs_info *fs_info) 
					      0, released, 0);

}



/*

 * Transfer bytes to our delayed refs rsv.

 *

 * @fs_info:   the filesystem

 * @num_bytes: number of bytes to transfer

 *

 * This transfers up to the num_bytes amount, previously reserved, to the

 * delayed_refs_rsv.  Any extra bytes are returned to the space info.

 */

void btrfs_migrate_to_delayed_refs_rsv(struct btrfs_fs_info *fs_info,

				       u64 num_bytes)

{

	struct btrfs_block_rsv *delayed_refs_rsv = &fs_info->delayed_refs_rsv;

	u64 to_free = 0;



	spin_lock(&delayed_refs_rsv->lock);

	if (delayed_refs_rsv->size > delayed_refs_rsv->reserved) {

		u64 delta = delayed_refs_rsv->size -

			delayed_refs_rsv->reserved;

		if (num_bytes > delta) {

			to_free = num_bytes - delta;

			num_bytes = delta;

		}

	} else {

		to_free = num_bytes;

		num_bytes = 0;

	}



	if (num_bytes)

		delayed_refs_rsv->reserved += num_bytes;

	if (delayed_refs_rsv->reserved >= delayed_refs_rsv->size)

		delayed_refs_rsv->full = true;

	spin_unlock(&delayed_refs_rsv->lock);



	if (num_bytes)

		trace_btrfs_space_reservation(fs_info, "delayed_refs_rsv",

					      0, num_bytes, 1);

	if (to_free)

		btrfs_space_info_free_bytes_may_use(fs_info,

				delayed_refs_rsv->space_info, to_free);

}



/*

 * Refill based on our delayed refs usage.

 *

fs/btrfs/delayed-ref.h

+0 −2
Original line number Diff line number Diff line
@@ -386,8 +386,6 @@ void btrfs_inc_delayed_refs_rsv_bg_updates(struct btrfs_fs_info *fs_info); 
void btrfs_dec_delayed_refs_rsv_bg_updates(struct btrfs_fs_info *fs_info);

int btrfs_delayed_refs_rsv_refill(struct btrfs_fs_info *fs_info,

				  enum btrfs_reserve_flush_enum flush);

void btrfs_migrate_to_delayed_refs_rsv(struct btrfs_fs_info *fs_info,

				       u64 num_bytes);

bool btrfs_check_space_for_delayed_refs(struct btrfs_fs_info *fs_info);



static inline u64 btrfs_delayed_ref_owner(struct btrfs_delayed_ref_node *node)