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Howlett" To: maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrew Morton , Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Jerome Glisse , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Vlastimil Babka , Rik van Riel , Peter Zijlstra Subject: [PATCH v2 27/70] mm: Introduce vma_next() and vma_prev() Date: Tue, 12 Jan 2021 11:11:57 -0500 Message-Id: <20210112161240.2024684-28-Liam.Howlett@Oracle.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210112161240.2024684-1-Liam.Howlett@Oracle.com> References: <20210112161240.2024684-1-Liam.Howlett@Oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9862 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 bulkscore=0 malwarescore=0 suspectscore=0 adultscore=0 spamscore=0 mlxlogscore=999 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101120092 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9862 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 suspectscore=0 clxscore=1015 impostorscore=0 spamscore=0 priorityscore=1501 mlxscore=0 phishscore=0 mlxlogscore=999 bulkscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101120092 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Signed-off-by: Liam R. Howlett --- include/linux/mm.h | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 680dcfe07dbb6..99b1dec97495a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1647,7 +1647,7 @@ void zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, void zap_page_range(struct vm_area_struct *vma, unsigned long address, unsigned long size); void unmap_vmas(struct mmu_gather *tlb, struct vm_area_struct *start_vma, - unsigned long start, unsigned long end); + struct ma_state *mas, unsigned long start, unsigned long end); struct mmu_notifier_range; @@ -2654,6 +2654,24 @@ extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned lon extern struct vm_area_struct *find_vma_intersection(struct mm_struct *mm, unsigned long start_addr, unsigned long end_addr); +static inline struct vm_area_struct *vma_next(struct mm_struct *mm, + const struct vm_area_struct *vma) +{ + MA_STATE(mas, &mm->mm_mt, 0, 0); + + mas_set(&mas, vma->vm_end); + return mas_next(&mas, ULONG_MAX); +} + +static inline struct vm_area_struct *vma_prev(struct mm_struct *mm, + const struct vm_area_struct *vma) +{ + MA_STATE(mas, &mm->mm_mt, 0, 0); + + mas_set(&mas, vma->vm_start); + return mas_prev(&mas, 0); +} + static inline unsigned long vm_start_gap(struct vm_area_struct *vma) { unsigned long vm_start = vma->vm_start; @@ -2695,6 +2713,21 @@ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm, return vma; } +static inline struct vm_area_struct *vma_mas_next(struct ma_state *mas) +{ + struct ma_state tmp; + + memcpy(&tmp, mas, sizeof(tmp)); + return mas_next(&tmp, ULONG_MAX); +} + +static inline struct vm_area_struct *vma_mas_prev(struct ma_state *mas) +{ + struct ma_state tmp; + + memcpy(&tmp, mas, sizeof(tmp)); + return mas_prev(&tmp, 0); +} static inline bool range_in_vma(struct vm_area_struct *vma, unsigned long start, unsigned long end) {