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23 Nov 2023 07:47:24 -0800 From: Johannes Thumshirn Subject: [PATCH v2 0/5] btrfs: zoned: remove extent_buffer redirtying Date: Thu, 23 Nov 2023 07:47:14 -0800 Message-Id: <20231123-josef-generic-163-v2-0-ed1a79a8e51e@wdc.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAAN0X2UC/22NQQrCMBBFr1Jm7UgmiZq68h7SRU0n7Qg2kkhVS u9uLLhz+T6892fInIQzHKsZEk+SJY4F9KYCP7RjzyhdYdBKGyKt8BozB+x5LJ5H2hsMtguW24v 2tYPi3RMHea3Nc1N4kPyI6b1eTPRdfzX6U5sIFSpbszmQ2zlLp2fntz7eoFmW5QNoHvc5sAAAA A== To: Chris Mason , Josef Bacik , David Sterba Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig , Naohiro Aota , Johannes Thumshirn X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1700754443; l=1956; i=johannes.thumshirn@wdc.com; s=20230613; h=from:subject:message-id; bh=CTX5KvvgdrTsg7p8OnAZgf7FxwGXh2z+Mhi27UJgJ4Q=; b=+GlT1k7R+eeutsowVFxL6yS5MvlOHpSZVEv3B/yWnSKMMRTx6jtgIymMc/IrkRzr2O/rbECvR esX9BpccjubCXAj8GMFlhvzMXbti+8yFaVAWChYlXo38ExV9ZVMJhSV X-Developer-Key: i=johannes.thumshirn@wdc.com; a=ed25519; pk=TGmHKs78FdPi+QhrViEvjKIGwReUGCfa+3LEnGoR2KM= X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Thu, 23 Nov 2023 07:48:10 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783370347204748054 X-GMAIL-MSGID: 1783370347204748054 Since the beginning of zoned mode, I've promised Josef to get rid of the extent_buffer redirtying, but never actually got around to doing so. Then 2 weeks ago our CI has hit an ASSERT() in this area and I started to look into it again. After some discussion with Christoph we came to the conclusion to finally take the time and get rid of the extent_buffer redirtying once and for all. Patch one renames EXTENT_BUFFER_NO_CHECK into EXTENT_BUFFER_ZONED_ZEROOUT, because this fits the new model somewhat better. Number two sets the cancel bit instead of clearing the dirty bit from a zoned extent_buffer. Number three removes the last remaining bits of btrfs_redirty_list_add(). The last two patches in this series are just trivial cleanups I came across while looking at the code. --- Changes in v2: - Rename EXTENT_BUFFER_CANCELLED to EXTENT_BUFFER_ZONED_ZEROOUT - Add comments why we're marking the buffer as zeroout and zero it. - Add Reviews from Josef and Christoph - Link to v1: https://lore.kernel.org/r/20231121-josef-generic-163-v1-0-049e37185841@wdc.com --- Johannes Thumshirn (5): btrfs: rename EXTENT_BUFFER_NO_CHECK to EXTENT_BUFFER_ZONED_ZEROOUT btrfs: zoned: don't clear dirty flag of extent buffer btrfs: remove now unneeded btrfs_redirty_list_add btrfs: use memset_page instead of opencoding it btrfs: reflow btrfs_free_tree_block fs/btrfs/disk-io.c | 9 ++++- fs/btrfs/extent-tree.c | 102 ++++++++++++++++++++++++------------------------- fs/btrfs/extent_io.c | 18 +++++++-- fs/btrfs/extent_io.h | 3 +- fs/btrfs/tree-log.c | 1 - fs/btrfs/zoned.c | 16 -------- fs/btrfs/zoned.h | 5 --- 7 files changed, 74 insertions(+), 80 deletions(-) --- base-commit: 592afe8e8b7ceee58107757fd29ff3290e6539e3 change-id: 20231120-josef-generic-163-f4df4eab2c98 Best regards,