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GET /api/1.2/patches/2234997/?format=api
{ "id": 2234997, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2234997/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260508121539.4174601-9-libaokun@linux.alibaba.com/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/1.2/projects/8/?format=api", "name": "Linux ext4 filesystem development", "link_name": "linux-ext4", "list_id": "linux-ext4.vger.kernel.org", "list_email": "linux-ext4@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260508121539.4174601-9-libaokun@linux.alibaba.com>", "list_archive_url": null, "date": "2026-05-08T12:15:30", "name": "[RFC,08/17] ext4: extract inode bitmap checksum get and store helpers", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "23fb43d0d7317ec12cfed530826221d59154793b", "submitter": { "id": 92757, "url": "http://patchwork.ozlabs.org/api/1.2/people/92757/?format=api", "name": "Baokun Li", "email": "libaokun@linux.alibaba.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260508121539.4174601-9-libaokun@linux.alibaba.com/mbox/", "series": [ { "id": 503377, "url": "http://patchwork.ozlabs.org/api/1.2/series/503377/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=503377", "date": "2026-05-08T12:15:22", "name": "ext4/lib-crc: LBS performance part 1 - incremental CRC32c for bitmap checksums", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/503377/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2234997/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2234997/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=zelR=DF=vger.kernel.org=linux-ext4+bounces-16376-patchwork-incoming=ozlabs.org@ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-ext4@vger.kernel.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "patchwork-incoming@ozlabs.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=linux.alibaba.com header.i=@linux.alibaba.com\n header.a=rsa-sha256 header.s=default header.b=Tcvp3BN9;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=2404:9400:2221:ea00::3; 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a=rsa-sha256; c=relaxed/relaxed;\n\td=linux.alibaba.com; s=default;\n\tt=1778242567; h=From:To:Subject:Date:Message-ID:MIME-Version;\n\tbh=ocXa+cNFtPu91m7KczsGdIvia8D3mi5RoPrjj8lNwlE=;\n\tb=Tcvp3BN9adMeGNBj0ctYwWda1D6NWGqjoCRl6TilLDQNqPTdwtZYQZ6JCsVXledJNsqhVwTJ/o0PgZ9pggY3T+n6/zDRJO5ARMc2R/qyO2HnBX0jFvFsNm7+6aTQMrbYEfukh+EtsPA6gLT9SZIpzhobWXeRnh46bXcNZTPRU+I=", "X-Alimail-AntiSpam": "\n AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam011083073210;MF=libaokun@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0X2XQgpn_1778242565;", "From": "Baokun Li <libaokun@linux.alibaba.com>", "To": "linux-ext4@vger.kernel.org", "Cc": "linux-crypto@vger.kernel.org,\n\tebiggers@kernel.org,\n\tardb@kernel.org,\n\ttytso@mit.edu,\n\tadilger.kernel@dilger.ca,\n\tjack@suse.cz,\n\tyi.zhang@huawei.com,\n\tojaswin@linux.ibm.com,\n\tritesh.list@gmail.com,\n\tBaokun Li <libaokun@linux.alibaba.com>", "Subject": "[PATCH RFC 08/17] ext4: extract inode bitmap checksum get and store\n helpers", "Date": "Fri, 8 May 2026 20:15:30 +0800", "Message-ID": "<20260508121539.4174601-9-libaokun@linux.alibaba.com>", "X-Mailer": "git-send-email 2.43.7", "In-Reply-To": "<20260508121539.4174601-1-libaokun@linux.alibaba.com>", "References": "<20260508121539.4174601-1-libaokun@linux.alibaba.com>", "Precedence": "bulk", "X-Mailing-List": "linux-ext4@vger.kernel.org", "List-Id": "<linux-ext4.vger.kernel.org>", "List-Subscribe": "<mailto:linux-ext4+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-ext4+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-8.7 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS,\n\tHEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,\n\tSPF_PASS,UNPARSEABLE_RELAY,USER_IN_DEF_DKIM_WL autolearn=disabled\n\tversion=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "Add ext4_inode_bitmap_csum_get() and ext4_inode_bitmap_csum_store()\nhelpers, and use EXT4_DESC_SIZE(sb) instead of sbi->s_desc_size for\nconsistency. No functional change.\n\nSigned-off-by: Baokun Li <libaokun@linux.alibaba.com>\n---\n fs/ext4/bitmap.c | 31 ++++++++++++++++++++++---------\n 1 file changed, 22 insertions(+), 9 deletions(-)", "diff": "diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c\nindex 00b0a3c74859..008acc439301 100644\n--- a/fs/ext4/bitmap.c\n+++ b/fs/ext4/bitmap.c\n@@ -16,11 +16,29 @@ unsigned int ext4_count_free(char *bitmap, unsigned int numchars)\n \treturn numchars * BITS_PER_BYTE - memweight(bitmap, numchars);\n }\n \n+static inline __u32 ext4_inode_bitmap_csum_get(struct super_block *sb,\n+\t\t\t\t\t struct ext4_group_desc *gdp)\n+{\n+\t__u32 csum = le16_to_cpu(gdp->bg_inode_bitmap_csum_lo);\n+\n+\tif (EXT4_DESC_SIZE(sb) >= EXT4_BG_INODE_BITMAP_CSUM_HI_END)\n+\t\tcsum |= (__u32)le16_to_cpu(gdp->bg_inode_bitmap_csum_hi) << 16;\n+\treturn csum;\n+}\n+\n+static inline void ext4_inode_bitmap_csum_store(struct super_block *sb,\n+\t\t\t\t\t\tstruct ext4_group_desc *gdp,\n+\t\t\t\t\t\t__u32 csum)\n+{\n+\tgdp->bg_inode_bitmap_csum_lo = cpu_to_le16(csum & 0xFFFF);\n+\tif (EXT4_DESC_SIZE(sb) >= EXT4_BG_INODE_BITMAP_CSUM_HI_END)\n+\t\tgdp->bg_inode_bitmap_csum_hi = cpu_to_le16(csum >> 16);\n+}\n+\n int ext4_inode_bitmap_csum_verify(struct super_block *sb,\n \t\t\t\t struct ext4_group_desc *gdp,\n \t\t\t\t struct buffer_head *bh)\n {\n-\t__u32 hi;\n \t__u32 provided, calculated;\n \tstruct ext4_sb_info *sbi = EXT4_SB(sb);\n \tint sz;\n@@ -29,12 +47,9 @@ int ext4_inode_bitmap_csum_verify(struct super_block *sb,\n \t\treturn 1;\n \n \tsz = EXT4_INODES_PER_GROUP(sb) >> 3;\n-\tprovided = le16_to_cpu(gdp->bg_inode_bitmap_csum_lo);\n+\tprovided = ext4_inode_bitmap_csum_get(sb, gdp);\n \tcalculated = ext4_chksum(sbi->s_csum_seed, (__u8 *)bh->b_data, sz);\n-\tif (sbi->s_desc_size >= EXT4_BG_INODE_BITMAP_CSUM_HI_END) {\n-\t\thi = le16_to_cpu(gdp->bg_inode_bitmap_csum_hi);\n-\t\tprovided |= (hi << 16);\n-\t} else\n+\tif (EXT4_DESC_SIZE(sb) < EXT4_BG_INODE_BITMAP_CSUM_HI_END)\n \t\tcalculated &= 0xFFFF;\n \n \treturn provided == calculated;\n@@ -53,9 +68,7 @@ void ext4_inode_bitmap_csum_set(struct super_block *sb,\n \n \tsz = EXT4_INODES_PER_GROUP(sb) >> 3;\n \tcsum = ext4_chksum(sbi->s_csum_seed, (__u8 *)bh->b_data, sz);\n-\tgdp->bg_inode_bitmap_csum_lo = cpu_to_le16(csum & 0xFFFF);\n-\tif (sbi->s_desc_size >= EXT4_BG_INODE_BITMAP_CSUM_HI_END)\n-\t\tgdp->bg_inode_bitmap_csum_hi = cpu_to_le16(csum >> 16);\n+\text4_inode_bitmap_csum_store(sb, gdp, csum);\n }\n \n static inline __u32 ext4_block_bitmap_csum_get(struct super_block *sb,\n", "prefixes": [ "RFC", "08/17" ] }