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Tue, 7 Nov 2023 22:00:33 +0000 From: Ankur Arora To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, peterz@infradead.org, torvalds@linux-foundation.org, paulmck@kernel.org, linux-mm@kvack.org, x86@kernel.org, akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org, mgorman@suse.de, jon.grimm@amd.com, bharata@amd.com, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, jgross@suse.com, andrew.cooper3@citrix.com, mingo@kernel.org, bristot@kernel.org, mathieu.desnoyers@efficios.com, geert@linux-m68k.org, glaubitz@physik.fu-berlin.de, anton.ivanov@cambridgegreys.com, mattst88@gmail.com, krypton@ulrich-teichert.org, rostedt@goodmis.org, David.Laight@ACULAB.COM, richard@nod.at, mjguzik@gmail.com, Ankur Arora Subject: [RFC PATCH 56/86] xarray: use cond_resched_xas*() Date: Tue, 7 Nov 2023 13:57:42 -0800 Message-Id: <20231107215742.363031-57-ankur.a.arora@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20231107215742.363031-1-ankur.a.arora@oracle.com> References: <20231107215742.363031-1-ankur.a.arora@oracle.com> X-ClientProxiedBy: MW4P223CA0001.NAMP223.PROD.OUTLOOK.COM (2603:10b6:303:80::6) To CO6PR10MB5409.namprd10.prod.outlook.com (2603:10b6:5:357::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO6PR10MB5409:EE_|BN0PR10MB5318:EE_ X-MS-Office365-Filtering-Correlation-Id: 0ba5a61e-6ac2-48d7-3fe7-08dbdfdcf6f7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Tue, 07 Nov 2023 14:11:59 -0800 (PST) X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1781944938733945944 X-GMAIL-MSGID: 1781944938733945944 Replace the open coded xarray pattern, flush, release resource, allowing rescheduling to happen, reacquire by the appropriate helper. Signed-off-by: Ankur Arora --- fs/dax.c | 15 +++------------ mm/filemap.c | 5 +---- mm/khugepaged.c | 5 +---- mm/memfd.c | 10 ++-------- mm/page-writeback.c | 5 +---- mm/shmem.c | 10 ++-------- 6 files changed, 10 insertions(+), 40 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 8fafecbe42b1..93cf6e8d8990 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -726,10 +726,7 @@ struct page *dax_layout_busy_page_range(struct address_space *mapping, if (++scanned % XA_CHECK_SCHED) continue; - xas_pause(&xas); - xas_unlock_irq(&xas); - cond_resched(); - xas_lock_irq(&xas); + cond_resched_xas_lock_irq(&xas); } xas_unlock_irq(&xas); return page; @@ -784,10 +781,7 @@ static int __dax_clear_dirty_range(struct address_space *mapping, if (++scanned % XA_CHECK_SCHED) continue; - xas_pause(&xas); - xas_unlock_irq(&xas); - cond_resched(); - xas_lock_irq(&xas); + cond_resched_xas_lock_irq(&xas); } xas_unlock_irq(&xas); @@ -1052,10 +1046,7 @@ int dax_writeback_mapping_range(struct address_space *mapping, if (++scanned % XA_CHECK_SCHED) continue; - xas_pause(&xas); - xas_unlock_irq(&xas); - cond_resched(); - xas_lock_irq(&xas); + cond_resched_xas_lock_irq(&xas); } xas_unlock_irq(&xas); trace_dax_writeback_range_done(inode, xas.xa_index, end_index); diff --git a/mm/filemap.c b/mm/filemap.c index f0a15ce1bd1b..dc4dcc5eaf5e 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -4210,10 +4210,7 @@ static void filemap_cachestat(struct address_space *mapping, cs->nr_writeback += nr_pages; resched: - if (need_resched()) { - xas_pause(&xas); - cond_resched_rcu(); - } + cond_resched_xas_rcu(&xas); } rcu_read_unlock(); } diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 88433cc25d8a..4025225ef434 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -2290,10 +2290,7 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr, present++; - if (need_resched()) { - xas_pause(&xas); - cond_resched_rcu(); - } + cond_resched_xas_rcu(&xas); } rcu_read_unlock(); diff --git a/mm/memfd.c b/mm/memfd.c index 2dba2cb6f0d0..5c92f7317dbe 100644 --- a/mm/memfd.c +++ b/mm/memfd.c @@ -55,10 +55,7 @@ static void memfd_tag_pins(struct xa_state *xas) continue; latency = 0; - xas_pause(xas); - xas_unlock_irq(xas); - cond_resched(); - xas_lock_irq(xas); + cond_resched_xas_lock_irq(xas); } xas_unlock_irq(xas); } @@ -123,10 +120,7 @@ static int memfd_wait_for_pins(struct address_space *mapping) continue; latency = 0; - xas_pause(&xas); - xas_unlock_irq(&xas); - cond_resched(); - xas_lock_irq(&xas); + cond_resched_xas_lock_irq(&xas); } xas_unlock_irq(&xas); } diff --git a/mm/page-writeback.c b/mm/page-writeback.c index b8d3d7040a50..61a190b9d83c 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2351,10 +2351,7 @@ void tag_pages_for_writeback(struct address_space *mapping, if (++tagged % XA_CHECK_SCHED) continue; - xas_pause(&xas); - xas_unlock_irq(&xas); - cond_resched(); - xas_lock_irq(&xas); + cond_resched_xas_lock_irq(&xas); } xas_unlock_irq(&xas); } diff --git a/mm/shmem.c b/mm/shmem.c index 69595d341882..112172031b2c 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -882,10 +882,7 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping, swapped++; if (xas.xa_index == max) break; - if (need_resched()) { - xas_pause(&xas); - cond_resched_rcu(); - } + cond_resched_xas_rcu(&xas); } rcu_read_unlock(); @@ -1299,10 +1296,7 @@ static int shmem_find_swap_entries(struct address_space *mapping, if (!folio_batch_add(fbatch, folio)) break; - if (need_resched()) { - xas_pause(&xas); - cond_resched_rcu(); - } + cond_resched_xas_rcu(&xas); } rcu_read_unlock();