mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
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b5aac254c7
The tool IWYU (include what you use) suggests to remove and add some includes. This is only partial to avoid accidental build breakage, the includes are entangled and will have to be cleaned in the future again. Signed-off-by: David Sterba <dsterba@suse.com>
87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
/*
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* Copyright (C) 2014 Facebook. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include <errno.h>
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#include <stddef.h>
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#include "kernel-lib/rbtree.h"
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#include "kernel-lib/rbtree_types.h"
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#include "common/rbtree-utils.h"
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int rb_insert(struct rb_root *root, struct rb_node *node,
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rb_compare_nodes comp)
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{
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struct rb_node **p = &root->rb_node;
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struct rb_node *parent = NULL;
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int ret;
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while(*p) {
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parent = *p;
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ret = comp(parent, node);
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if (ret < 0)
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p = &(*p)->rb_left;
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else if (ret > 0)
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p = &(*p)->rb_right;
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else
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return -EEXIST;
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}
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rb_link_node(node, parent, p);
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rb_insert_color(node, root);
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return 0;
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}
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struct rb_node *rb_search(struct rb_root *root, void *key, rb_compare_keys comp,
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struct rb_node **next_ret)
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{
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struct rb_node *n = root->rb_node;
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struct rb_node *parent = NULL;
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int ret = 0;
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while(n) {
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parent = n;
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ret = comp(n, key);
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if (ret < 0)
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n = n->rb_left;
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else if (ret > 0)
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n = n->rb_right;
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else
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return n;
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}
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if (!next_ret)
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return NULL;
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if (parent && ret > 0)
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parent = rb_next(parent);
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*next_ret = parent;
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return NULL;
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}
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void rb_free_nodes(struct rb_root *root, rb_free_node free_node)
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{
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struct rb_node *node;
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while ((node = rb_first(root))) {
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rb_erase(node, root);
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free_node(node);
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}
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}
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