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Release 4.12 mm/interval_tree.c

Directory: mm
/*
 * mm/interval_tree.c - interval tree for mapping->i_mmap
 *
 * Copyright (C) 2012, Michel Lespinasse <walken@google.com>
 *
 * This file is released under the GPL v2.
 */

#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/rmap.h>
#include <linux/interval_tree_generic.h>


static inline unsigned long vma_start_pgoff(struct vm_area_struct *v) { return v->vm_pgoff; }

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Michel Lespinasse18100.00%2100.00%
Total18100.00%2100.00%


static inline unsigned long vma_last_pgoff(struct vm_area_struct *v) { return v->vm_pgoff + ((v->vm_end - v->vm_start) >> PAGE_SHIFT) - 1; }

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Michel Lespinasse34100.00%2100.00%
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INTERVAL_TREE_DEFINE(struct vm_area_struct, shared.rb, unsigned long, shared.rb_subtree_last, vma_start_pgoff, vma_last_pgoff,, vma_interval_tree) /* Insert node immediately after prev in the interval tree */
void vma_interval_tree_insert_after(struct vm_area_struct *node, struct vm_area_struct *prev, struct rb_root *root) { struct rb_node **link; struct vm_area_struct *parent; unsigned long last = vma_last_pgoff(node); VM_BUG_ON_VMA(vma_start_pgoff(node) != vma_start_pgoff(prev), node); if (!prev->shared.rb.rb_right) { parent = prev; link = &prev->shared.rb.rb_right; } else { parent = rb_entry(prev->shared.rb.rb_right, struct vm_area_struct, shared.rb); if (parent->shared.rb_subtree_last < last) parent->shared.rb_subtree_last = last; while (parent->shared.rb.rb_left) { parent = rb_entry(parent->shared.rb.rb_left, struct vm_area_struct, shared.rb); if (parent->shared.rb_subtree_last < last) parent->shared.rb_subtree_last = last; } link = &parent->shared.rb.rb_left; } node->shared.rb_subtree_last = last; rb_link_node(&node->shared.rb, &parent->shared.rb, link); rb_insert_augmented(&node->shared.rb, root, &vma_interval_tree_augment); }

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Michel Lespinasse22498.68%266.67%
Sasha Levin31.32%133.33%
Total227100.00%3100.00%


static inline unsigned long avc_start_pgoff(struct anon_vma_chain *avc) { return vma_start_pgoff(avc->vma); }

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Michel Lespinasse21100.00%1100.00%
Total21100.00%1100.00%


static inline unsigned long avc_last_pgoff(struct anon_vma_chain *avc) { return vma_last_pgoff(avc->vma); }

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Michel Lespinasse21100.00%1100.00%
Total21100.00%1100.00%

INTERVAL_TREE_DEFINE(struct anon_vma_chain, rb, unsigned long, rb_subtree_last, avc_start_pgoff, avc_last_pgoff, static inline, __anon_vma_interval_tree)
void anon_vma_interval_tree_insert(struct anon_vma_chain *node, struct rb_root *root) { #ifdef CONFIG_DEBUG_VM_RB node->cached_vma_start = avc_start_pgoff(node); node->cached_vma_last = avc_last_pgoff(node); #endif __anon_vma_interval_tree_insert(node, root); }

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Michel Lespinasse45100.00%1100.00%
Total45100.00%1100.00%


void anon_vma_interval_tree_remove(struct anon_vma_chain *node, struct rb_root *root) { __anon_vma_interval_tree_remove(node, root); }

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Michel Lespinasse22100.00%1100.00%
Total22100.00%1100.00%


struct anon_vma_chain * anon_vma_interval_tree_iter_first(struct rb_root *root, unsigned long first, unsigned long last) { return __anon_vma_interval_tree_iter_first(root, first, last); }

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Michel Lespinasse30100.00%1100.00%
Total30100.00%1100.00%


struct anon_vma_chain * anon_vma_interval_tree_iter_next(struct anon_vma_chain *node, unsigned long first, unsigned long last) { return __anon_vma_interval_tree_iter_next(node, first, last); }

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Michel Lespinasse30100.00%1100.00%
Total30100.00%1100.00%

#ifdef CONFIG_DEBUG_VM_RB
void anon_vma_interval_tree_verify(struct anon_vma_chain *node) { WARN_ON_ONCE(node->cached_vma_start != avc_start_pgoff(node)); WARN_ON_ONCE(node->cached_vma_last != avc_last_pgoff(node)); }

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Michel Lespinasse34100.00%1100.00%
Total34100.00%1100.00%

#endif

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Michel Lespinasse53199.07%466.67%
Sasha Levin30.56%116.67%
Kirill A. Shutemov20.37%116.67%
Total536100.00%6100.00%
Directory: mm
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