pgtable-frag.c (4b4193256c8d3bc3a5397b5cd9494c2ad386317d) pgtable-frag.c (1fd02f6605b855b4af2883f29a2abc88bdf17857)
1// SPDX-License-Identifier: GPL-2.0
2
3/*
4 * Handling Page Tables through page fragments
5 *
6 */
7
8#include <linux/kernel.h>

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78 * if we support only one fragment just return the
79 * allocated page.
80 */
81 if (PTE_FRAG_NR == 1)
82 return ret;
83 spin_lock(&mm->page_table_lock);
84 /*
85 * If we find pgtable_page set, we return
1// SPDX-License-Identifier: GPL-2.0
2
3/*
4 * Handling Page Tables through page fragments
5 *
6 */
7
8#include <linux/kernel.h>

--- 69 unchanged lines hidden (view full) ---

78 * if we support only one fragment just return the
79 * allocated page.
80 */
81 if (PTE_FRAG_NR == 1)
82 return ret;
83 spin_lock(&mm->page_table_lock);
84 /*
85 * If we find pgtable_page set, we return
86 * the allocated page with single fragement
86 * the allocated page with single fragment
87 * count.
88 */
89 if (likely(!pte_frag_get(&mm->context))) {
90 atomic_set(&page->pt_frag_refcount, PTE_FRAG_NR);
91 pte_frag_set(&mm->context, ret + PTE_FRAG_SIZE);
92 }
93 spin_unlock(&mm->page_table_lock);
94

--- 28 unchanged lines hidden --- 		87 * count.
88 */
89 if (likely(!pte_frag_get(&mm->context))) {
90 atomic_set(&page->pt_frag_refcount, PTE_FRAG_NR);
91 pte_frag_set(&mm->context, ret + PTE_FRAG_SIZE);
92 }
93 spin_unlock(&mm->page_table_lock);
94

--- 28 unchanged lines hidden ---