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Tue, 30 Mar 2021 21:26:52 +0000 From: Anthony Yznaga To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: willy@infradead.org, corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, rppt@kernel.org, akpm@linux-foundation.org, hughd@google.com, ebiederm@xmission.com, keescook@chromium.org, ardb@kernel.org, nivedita@alum.mit.edu, jroedel@suse.de, masahiroy@kernel.org, nathan@kernel.org, terrelln@fb.com, vincenzo.frascino@arm.com, martin.b.radev@gmail.com, andreyknvl@google.com, daniel.kiper@oracle.com, rafael.j.wysocki@intel.com, dan.j.williams@intel.com, Jonathan.Cameron@huawei.com, bhe@redhat.com, rminnich@gmail.com, ashish.kalra@amd.com, guro@fb.com, hannes@cmpxchg.org, mhocko@kernel.org, iamjoonsoo.kim@lge.com, vbabka@suse.cz, alex.shi@linux.alibaba.com, david@redhat.com, richard.weiyang@gmail.com, vdavydov.dev@gmail.com, graf@amazon.com, jason.zeng@intel.com, lei.l.li@intel.com, daniel.m.jordan@oracle.com, steven.sistare@oracle.com, linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org, kexec@lists.infradead.org Subject: [RFC v2 26/43] mm: shmem: specify the mm to use when inserting pages Date: Tue, 30 Mar 2021 14:36:01 -0700 Message-Id: <1617140178-8773-27-git-send-email-anthony.yznaga@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1617140178-8773-1-git-send-email-anthony.yznaga@oracle.com> References: <1617140178-8773-1-git-send-email-anthony.yznaga@oracle.com> Content-Type: text/plain X-Originating-IP: [148.87.23.8] X-ClientProxiedBy: BYAPR11CA0099.namprd11.prod.outlook.com (2603:10b6:a03:f4::40) To MN2PR10MB3533.namprd10.prod.outlook.com (2603:10b6:208:118::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ca-qasparc-x86-2.us.oracle.com (148.87.23.8) by BYAPR11CA0099.namprd11.prod.outlook.com (2603:10b6:a03:f4::40) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3977.26 via Frontend Transport; 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identity=mailfrom; envelope-from=""; helo=aserp2130.oracle.com; client-ip=141.146.126.79 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617139638-445403 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: Explicitly specify the mm to pass to shmem_insert_page() when the pkram_stream is initialized rather than use the mm of the current thread. This will allow for multiple kernel threads to target the same mm when inserting pages in parallel. Signed-off-by: Anthony Yznaga --- mm/shmem_pkram.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/shmem_pkram.c b/mm/shmem_pkram.c index 904b1b861ce5..8682b0c002c0 100644 --- a/mm/shmem_pkram.c +++ b/mm/shmem_pkram.c @@ -225,7 +225,7 @@ int shmem_save_pkram(struct super_block *sb) return err; } -static int load_file_content(struct pkram_stream *ps, struct address_space *mapping) +static int load_file_content(struct pkram_stream *ps, struct address_space *mapping, struct mm_struct *mm) { PKRAM_ACCESS(pa, ps, pages); unsigned long index; @@ -237,7 +237,7 @@ static int load_file_content(struct pkram_stream *ps, struct address_space *mapp if (!page) break; - err = shmem_insert_page(current->mm, mapping->host, index, page); + err = shmem_insert_page(mm, mapping->host, index, page); put_page(page); cond_resched(); } while (!err); @@ -291,7 +291,7 @@ static int load_file(struct dentry *parent, struct pkram_stream *ps, inode->i_ctime = ns_to_timespec64(hdr.ctime); i_size_write(inode, hdr.size); - err = load_file_content(ps, inode->i_mapping); + err = load_file_content(ps, inode->i_mapping, current->mm); out_unlock: inode_unlock(d_inode(parent)); out: -- 1.8.3.1