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09 Oct 2020 12:52:18 -0700 From: ira.weiny@intel.com To: Andrew Morton , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra Subject: [PATCH RFC PKS/PMEM 25/58] fs/reiserfs: Utilize new kmap_thread() Date: Fri, 9 Oct 2020 12:50:00 -0700 Message-Id: <20201009195033.3208459-26-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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201009_155526_150925_44B20E75 X-CRM114-Status: GOOD ( 14.24 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-aio@kvack.org, linux-efi@vger.kernel.org, Jan Kara , 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, Alex Shi , 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, linux-nfs@vger.kernel.org, Theodore Ts'o , linux-ntfs-dev@lists.sourceforge.net, netdev@vger.kernel.org, Randy Dunlap , 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org 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: Jan Kara Cc: "Theodore Ts'o" Cc: Randy Dunlap Cc: Alex Shi Signed-off-by: Ira Weiny --- fs/reiserfs/journal.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index e98f99338f8f..be8f56261e8c 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -4194,11 +4194,11 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, int flags) SB_ONDISK_JOURNAL_SIZE(sb))); set_buffer_uptodate(tmp_bh); page = cn->bh->b_page; - addr = kmap(page); + addr = kmap_thread(page); memcpy(tmp_bh->b_data, addr + offset_in_page(cn->bh->b_data), cn->bh->b_size); - kunmap(page); + kunmap_thread(page); mark_buffer_dirty(tmp_bh); jindex++; set_buffer_journal_dirty(cn->bh); -- 2.28.0.rc0.12.gb6a658bd00c9 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/