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Fri, 9 Oct 2020 19:52:52 +0000 (UTC) IronPort-SDR: NAcOqRy7rFDcbMPjyEYadij/vG+svkZ2FWv12sD9U+NIiOr7aboMMliu9X6DdNMlQEoDD5IwFw e2QMIPins69g== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="165592393" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="165592393" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:51 -0700 IronPort-SDR: raa31ON9t7yf3LIgfzeAsEKPUCppaesVfvBVJ2ruufMJvWsy9JzU1jTdgl2++U0w8tR7AuyOxm Q4+3OjaqYbiw== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="298531317" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:50 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Cc: Ira Weiny , Gao Xiang , Chao Yu , x86@kernel.org, Dave Hansen , Dan Williams , Fenghua Yu , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, kexec@lists.infradead.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, devel@driverdev.osuosl.org, linux-efi@vger.kernel.org, linux-mmc@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-nfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-um@lists.infradead.org, linux-ntfs-dev@lists.sourceforge.net, reiserfs-devel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, cluster-devel@redhat.com, ecryptfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-afs@lists.infradead.org, linux-rdma@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, xen-devel@lists.xenproject.org, linux-cachefs@redhat.com, samba-technical@lists.samba.org, intel-wired-lan@lists.osuosl.org Subject: [PATCH RFC PKS/PMEM 34/58] fs/erofs: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:09 -0700 Message-Id: <20201009195033.3208459-35-ira.weiny@intel.com> X-Mailer: git-send-email 2.28.0.rc0.12.gb6a658bd00c9 In-Reply-To: <20201009195033.3208459-1-ira.weiny@intel.com> References: <20201009195033.3208459-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: From: Ira Weiny The kmap() calls in this FS are localized to a single thread. To avoid the over head of global PKRS updates use the new kmap_thread() call. Cc: Gao Xiang Cc: Chao Yu Signed-off-by: Ira Weiny --- fs/erofs/super.c | 4 ++-- fs/erofs/xattr.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/erofs/super.c b/fs/erofs/super.c index ddaa516c008a..41696b60f1b3 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -139,7 +139,7 @@ static int erofs_read_superblock(struct super_block *= sb) =20 sbi =3D EROFS_SB(sb); =20 - data =3D kmap(page); + data =3D kmap_thread(page); dsb =3D (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET); =20 ret =3D -EINVAL; @@ -189,7 +189,7 @@ static int erofs_read_superblock(struct super_block *= sb) } ret =3D 0; out: - kunmap(page); + kunmap_thread(page); put_page(page); return ret; } diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c index c8c381eadcd6..1771baa99d77 100644 --- a/fs/erofs/xattr.c +++ b/fs/erofs/xattr.c @@ -20,7 +20,7 @@ static inline void xattr_iter_end(struct xattr_iter *it= , bool atomic) { /* the only user of kunmap() is 'init_inode_xattrs' */ if (!atomic) - kunmap(it->page); + kunmap_thread(it->page); else kunmap_atomic(it->kaddr); =20 @@ -96,7 +96,7 @@ static int init_inode_xattrs(struct inode *inode) } =20 /* read in shared xattr array (non-atomic, see kmalloc below) */ - it.kaddr =3D kmap(it.page); + it.kaddr =3D kmap_thread(it.page); atomic_map =3D false; =20 ih =3D (struct erofs_xattr_ibody_header *)(it.kaddr + it.ofs); --=20 2.28.0.rc0.12.gb6a658bd00c9