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Fri, 9 Oct 2020 19:52:27 +0000 (UTC) IronPort-SDR: OnQ0mqOBpqEpWFlc84srhATu/AWCkX9EUCHnE3j+wMkf+ao03qlf63ZcJOcG18Y1QxOlS5jQ2k iOc10rjtn6yA== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="144850899" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="144850899" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:26 -0700 IronPort-SDR: enOwdrUvox960YRmC5C0rYPH71vGkXRrRSf++MkJJnBOIwe1z1BLjEriaudfjb7SF8F3v1X02a epHq/DZLuLjw== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="355863002" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:25 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Cc: Ira Weiny , Richard Weinberger , 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 27/58] fs/ubifs: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:02 -0700 Message-Id: <20201009195033.3208459-28-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: Richard Weinberger Signed-off-by: Ira Weiny --- fs/ubifs/file.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index b77d1637bbbc..a3537447a885 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -111,7 +111,7 @@ static int do_readpage(struct page *page) ubifs_assert(c, !PageChecked(page)); ubifs_assert(c, !PagePrivate(page)); =20 - addr =3D kmap(page); + addr =3D kmap_thread(page); =20 block =3D page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT; beyond =3D (i_size + UBIFS_BLOCK_SIZE - 1) >> UBIFS_BLOCK_SHIFT; @@ -174,7 +174,7 @@ static int do_readpage(struct page *page) SetPageUptodate(page); ClearPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); return 0; =20 error: @@ -182,7 +182,7 @@ static int do_readpage(struct page *page) ClearPageUptodate(page); SetPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); return err; } =20 @@ -616,7 +616,7 @@ static int populate_page(struct ubifs_info *c, struct= page *page, dbg_gen("ino %lu, pg %lu, i_size %lld, flags %#lx", inode->i_ino, page->index, i_size, page->flags); =20 - addr =3D zaddr =3D kmap(page); + addr =3D zaddr =3D kmap_thread(page); =20 end_index =3D (i_size - 1) >> PAGE_SHIFT; if (!i_size || page->index > end_index) { @@ -692,7 +692,7 @@ static int populate_page(struct ubifs_info *c, struct= page *page, SetPageUptodate(page); ClearPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); *n =3D nn; return 0; =20 @@ -700,7 +700,7 @@ static int populate_page(struct ubifs_info *c, struct= page *page, ClearPageUptodate(page); SetPageError(page); flush_dcache_page(page); - kunmap(page); + kunmap_thread(page); ubifs_err(c, "bad data node (block %u, inode %lu)", page_block, inode->i_ino); return -EINVAL; @@ -918,7 +918,7 @@ static int do_writepage(struct page *page, int len) /* Update radix tree tags */ set_page_writeback(page); =20 - addr =3D kmap(page); + addr =3D kmap_thread(page); block =3D page->index << UBIFS_BLOCKS_PER_PAGE_SHIFT; i =3D 0; while (len) { @@ -950,7 +950,7 @@ static int do_writepage(struct page *page, int len) ClearPagePrivate(page); ClearPageChecked(page); =20 - kunmap(page); + kunmap_thread(page); unlock_page(page); end_page_writeback(page); return err; --=20 2.28.0.rc0.12.gb6a658bd00c9