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Fri, 9 Oct 2020 19:52:33 +0000 (UTC) IronPort-SDR: lRZisbpkVY1B3xbmxVqBssDhtcA5mtyhtttj/MJd8YlH0u/T+/rOPJpOgJBm6t+w3pgLlJBmJ0 TLjMo9CkoAtQ== X-IronPort-AV: E=McAfee;i="6000,8403,9769"; a="145397473" X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="145397473" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:33 -0700 IronPort-SDR: XHP7HCDttdXyLYHE1MyL2Bm/StJaryejpRmS+iQtfLlXLzP04sJOdLalPQz60Qvt6cf6bIW1lg L4ex5grUzrzg== X-IronPort-AV: E=Sophos;i="5.77,355,1596524400"; d="scan'208";a="298419726" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2020 12:52:32 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Date: Fri, 9 Oct 2020 12:50:04 -0700 Message-Id: <20201009195033.3208459-30-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 X-Mailman-Approved-At: Fri, 09 Oct 2020 20:01:20 +0000 Subject: [Intel-wired-lan] [PATCH RFC PKS/PMEM 29/58] fs/ntfs: Utilize new kmap_thread() X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-aio@kvack.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-mmc@vger.kernel.org, Dave Hansen , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, target-devel@vger.kernel.org, linux-mtd@lists.infradead.org, linux-kselftest@vger.kernel.org, samba-technical@lists.samba.org, Ira Weiny , ceph-devel@vger.kernel.org, drbd-dev@lists.linbit.com, devel@driverdev.osuosl.org, linux-cifs@vger.kernel.org, linux-nilfs@vger.kernel.org, linux-scsi@vger.kernel.org, linux-nvdimm@lists.01.org, linux-rdma@vger.kernel.org, x86@kernel.org, amd-gfx@lists.freedesktop.org, linux-afs@lists.infradead.org, cluster-devel@redhat.com, linux-cachefs@redhat.com, intel-wired-lan@lists.osuosl.org, xen-devel@lists.xenproject.org, linux-ext4@vger.kernel.org, Fenghua Yu , linux-um@lists.infradead.org, intel-gfx@lists.freedesktop.org, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, reiserfs-devel@vger.kernel.org, linux-block@vger.kernel.org, linux-bcache@vger.kernel.org, Dan Williams , io-uring@vger.kernel.org, Anton Altaparmakov , linux-nfs@vger.kernel.org, linux-ntfs-dev@lists.sourceforge.net, netdev@vger.kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-btrfs@vger.kernel.org Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" 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: Anton Altaparmakov Signed-off-by: Ira Weiny --- fs/ntfs/aops.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c index bb0a43860ad2..11633d732809 100644 --- a/fs/ntfs/aops.c +++ b/fs/ntfs/aops.c @@ -1099,7 +1099,7 @@ static int ntfs_write_mst_block(struct page *page, if (!nr_bhs) goto done; /* Map the page so we can access its contents. */ - kaddr = kmap(page); + kaddr = kmap_thread(page); /* Clear the page uptodate flag whilst the mst fixups are applied. */ BUG_ON(!PageUptodate(page)); ClearPageUptodate(page); @@ -1276,7 +1276,7 @@ static int ntfs_write_mst_block(struct page *page, iput(VFS_I(base_tni)); } SetPageUptodate(page); - kunmap(page); + kunmap_thread(page); done: if (unlikely(err && err != -ENOMEM)) { /*