From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f196.google.com ([209.85.128.196]:34456 "EHLO mail-wr0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755003AbdCPQKo (ORCPT ); Thu, 16 Mar 2017 12:10:44 -0400 Received: by mail-wr0-f196.google.com with SMTP id u48so6511386wrc.1 for ; Thu, 16 Mar 2017 09:10:43 -0700 (PDT) From: ednadolski@gmail.com To: linux-btrfs@vger.kernel.org Cc: Edmund Nadolski Subject: [PATCH v2 2/2] btrfs: replace hardcoded value with SEQ_LAST macro Date: Thu, 16 Mar 2017 10:04:34 -0600 Message-Id: <20170316160434.8126-3-enadolski@suse.com> In-Reply-To: <20170316160434.8126-1-enadolski@suse.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: References: <20170316160434.8126-1-enadolski@suse.com> From: Edmund Nadolski Define the SEQ_LAST macro to replace (u64)-1 in places where said value triggers a special-case ref search behavior. Signed-off-by: Edmund Nadolski Reviewed-by: Jeff Mahoney --- fs/btrfs/backref.c | 16 ++++++++-------- fs/btrfs/ctree.h | 2 ++ fs/btrfs/qgroup.c | 4 ++-- 3 files changed, 12 insertions(+), 10 deletions(-) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 6ce7281..24865da 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -538,7 +538,7 @@ static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path, * slot==nritems. In that case, go to the next leaf before we continue. */ if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) { - if (time_seq == (u64)-1) + if (time_seq == SEQ_LAST) ret = btrfs_next_leaf(root, path); else ret = btrfs_next_old_leaf(root, path, time_seq); @@ -582,7 +582,7 @@ static int add_all_parents(struct btrfs_root *root, struct btrfs_path *path, eie = NULL; } next: - if (time_seq == (u64)-1) + if (time_seq == SEQ_LAST) ret = btrfs_next_item(root, path); else ret = btrfs_next_old_item(root, path, time_seq); @@ -634,7 +634,7 @@ static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info, if (path->search_commit_root) root_level = btrfs_header_level(root->commit_root); - else if (time_seq == (u64)-1) + else if (time_seq == SEQ_LAST) root_level = btrfs_header_level(root->node); else root_level = btrfs_old_root_level(root, time_seq); @@ -645,7 +645,7 @@ static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info, } path->lowest_level = level; - if (time_seq == (u64)-1) + if (time_seq == SEQ_LAST) ret = btrfs_search_slot(NULL, root, &ref->key_for_search, path, 0, 0); else @@ -1199,7 +1199,7 @@ static int __add_keyed_refs(struct btrfs_fs_info *fs_info, * * NOTE: This can return values > 0 * - * If time_seq is set to (u64)-1, it will not search delayed_refs, and behave + * If time_seq is set to SEQ_LAST, it will not search delayed_refs, and behave * much like trans == NULL case, the difference only lies in it will not * commit root. * The special case is for qgroup to search roots in commit_transaction(). @@ -1246,7 +1246,7 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, path->skip_locking = 1; } - if (time_seq == (u64)-1) + if (time_seq == SEQ_LAST) path->skip_locking = 1; /* @@ -1276,9 +1276,9 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans, #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS if (trans && likely(trans->type != __TRANS_DUMMY) && - time_seq != (u64)-1) { + time_seq != SEQ_LAST) { #else - if (trans && time_seq != (u64)-1) { + if (trans && time_seq != SEQ_LAST) { #endif /* * look if there are updates for this ref queued and lock the diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 5da1385..19f6316 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -659,6 +659,8 @@ struct seq_list { #define SEQ_LIST_INIT(name) { .list = LIST_HEAD_INIT((name).list), .seq = 0 } +#define SEQ_LAST ((u64)-1) + enum btrfs_orphan_cleanup_state { ORPHAN_CLEANUP_STARTED = 1, ORPHAN_CLEANUP_DONE = 2, diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index b1b691e..2ced786 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -2031,12 +2031,12 @@ int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans, goto cleanup; } /* - * Use (u64)-1 as time_seq to do special search, which + * Use SEQ_LAST as time_seq to do special search, which * doesn't lock tree or delayed_refs and search current * root. It's safe inside commit_transaction(). */ ret = btrfs_find_all_roots(trans, fs_info, - record->bytenr, (u64)-1, &new_roots); + record->bytenr, SEQ_LAST, &new_roots); if (ret < 0) goto cleanup; if (qgroup_to_skip) { -- 2.10.2