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GET /api/patches/2216330/?format=api
{ "id": 2216330, "url": "http://patchwork.ozlabs.org/api/patches/2216330/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260326095354.16340-74-jack@suse.cz/", "project": { "id": 8, "url": "http://patchwork.ozlabs.org/api/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": "<20260326095354.16340-74-jack@suse.cz>", "list_archive_url": null, "date": "2026-03-26T09:54:26", "name": "[32/42] fs: Switch inode_has_buffers() to take mapping_metadata_bhs", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "a33c3447a68fb9b2b48ad6373a099170a0d5e223", "submitter": { "id": 363, "url": "http://patchwork.ozlabs.org/api/people/363/?format=api", "name": "Jan Kara", "email": "jack@suse.cz" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/20260326095354.16340-74-jack@suse.cz/mbox/", "series": [ { "id": 497561, "url": "http://patchwork.ozlabs.org/api/series/497561/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=497561", "date": "2026-03-26T09:53:55", "name": "fs: Move metadata bh tracking from address_space", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497561/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216330/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216330/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <SRS0=k7As=B2=vger.kernel.org=linux-ext4+bounces-15428-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=suse.cz header.i=@suse.cz header.a=rsa-sha256\n header.s=susede2_rsa header.b=gdvbDLim;\n\tdkim=pass header.d=suse.cz header.i=@suse.cz header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=PfdLa6dF;\n\tdkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz\n header.a=rsa-sha256 header.s=susede2_rsa header.b=gdvbDLim;\n\tdkim=neutral header.d=suse.cz header.i=@suse.cz header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=PfdLa6dF;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org\n (client-ip=150.107.74.76; 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d=suse.cz;\n\ts=susede2_ed25519; t=1774518901;\n\th=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n\t mime-version:mime-version:\n\t content-transfer-encoding:content-transfer-encoding:\n\t in-reply-to:in-reply-to:references:references;\n\tbh=5ODd+/BQuyhT8bHEtYfURB336X+kzedB6XCVQ0zG+0Q=;\n\tb=PfdLa6dFwou+oMgtLWiBAOy2A+qgmui/o6nAS046la0tD95roE5TALf8UT2o6YCLDnrRxF\n\tQIoX5RoIyv4HjMDw==" ], "From": "Jan Kara <jack@suse.cz>", "To": "<linux-fsdevel@vger.kernel.org>", "Cc": "<linux-block@vger.kernel.org>,\n\tChristian Brauner <brauner@kernel.org>,\n\tAl Viro <viro@ZenIV.linux.org.uk>,\n\t<linux-ext4@vger.kernel.org>,\n\tTed Tso <tytso@mit.edu>,\n\t\"Tigran A. Aivazian\" <aivazian.tigran@gmail.com>,\n\tDavid Sterba <dsterba@suse.com>,\n\tOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,\n\tMuchun Song <muchun.song@linux.dev>,\n\tOscar Salvador <osalvador@suse.de>,\n\tDavid Hildenbrand <david@kernel.org>,\n\tlinux-mm@kvack.org,\n\tlinux-aio@kvack.org,\n\tBenjamin LaHaise <bcrl@kvack.org>,\n\tJan Kara <jack@suse.cz>,\n\tChristoph Hellwig <hch@lst.de>", "Subject": "[PATCH 32/42] fs: Switch inode_has_buffers() to take\n mapping_metadata_bhs", "Date": "Thu, 26 Mar 2026 10:54:26 +0100", "Message-ID": "<20260326095354.16340-74-jack@suse.cz>", "X-Mailer": "git-send-email 2.51.0", "In-Reply-To": "<20260326082428.31660-1-jack@suse.cz>", "References": "<20260326082428.31660-1-jack@suse.cz>", "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": 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"X-Rspamd-Queue-Id": "8F7B84D297", "X-Spam-Score": "-1.51", "X-Spam-Level": "", "X-Spam-Status": "No, score=-1.2 required=5.0 tests=ARC_SIGNED,ARC_VALID,\n\tDKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_MISSING,\n\tHEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org" }, "content": "As part of a move towards placing mapping_metadata_bhs in fs-private\ninode part, switch inode_has_buffers() to take mapping_metadata_bhs\nand rename the function to mmb_has_buffers().\n\nReviewed-by: Christoph Hellwig <hch@lst.de>\nSigned-off-by: Jan Kara <jack@suse.cz>\n---\n fs/buffer.c | 14 +++++++-------\n fs/ext4/inode.c | 2 +-\n include/linux/buffer_head.h | 2 +-\n 3 files changed, 9 insertions(+), 9 deletions(-)", "diff": "diff --git a/fs/buffer.c b/fs/buffer.c\nindex 67b3d4624503..b0436481d0f1 100644\n--- a/fs/buffer.c\n+++ b/fs/buffer.c\n@@ -468,7 +468,7 @@ EXPORT_SYMBOL(mark_buffer_async_write);\n * written back and waited upon before fsync() returns.\n *\n * The functions mark_buffer_dirty_inode(), fsync_inode_buffers(),\n- * inode_has_buffers() and invalidate_inode_buffers() are provided for the\n+ * mmb_has_buffers() and invalidate_inode_buffers() are provided for the\n * management of a list of dependent buffers in mapping_metadata_bhs struct.\n *\n * The locking is a little subtle: The list of buffer heads is protected by\n@@ -526,11 +526,11 @@ static void remove_assoc_queue(struct buffer_head *bh)\n \t}\n }\n \n-int inode_has_buffers(struct inode *inode)\n+bool mmb_has_buffers(struct mapping_metadata_bhs *mmb)\n {\n-\treturn !list_empty(&inode->i_data.i_metadata_bhs.list);\n+\treturn !list_empty(&mmb->list);\n }\n-EXPORT_SYMBOL_GPL(inode_has_buffers);\n+EXPORT_SYMBOL_GPL(mmb_has_buffers);\n \n /**\n * sync_mapping_buffers - write out & wait upon a mapping's \"associated\" buffers\n@@ -561,7 +561,7 @@ int sync_mapping_buffers(struct address_space *mapping)\n \tstruct blk_plug plug;\n \tLIST_HEAD(tmp);\n \n-\tif (list_empty(&mmb->list))\n+\tif (!mmb_has_buffers(mmb))\n \t\treturn 0;\n \n \tblk_start_plug(&plug);\n@@ -803,9 +803,9 @@ EXPORT_SYMBOL(block_dirty_folio);\n */\n void invalidate_inode_buffers(struct inode *inode)\n {\n-\tif (inode_has_buffers(inode)) {\n-\t\tstruct mapping_metadata_bhs *mmb = &inode->i_data.i_metadata_bhs;\n+\tstruct mapping_metadata_bhs *mmb = &inode->i_data.i_metadata_bhs;\n \n+\tif (mmb_has_buffers(mmb)) {\n \t\tspin_lock(&mmb->lock);\n \t\twhile (!list_empty(&mmb->list))\n \t\t\t__remove_assoc_queue(mmb, BH_ENTRY(mmb->list.next));\ndiff --git a/fs/ext4/inode.c b/fs/ext4/inode.c\nindex 6f892abef003..011cb2eb16a2 100644\n--- a/fs/ext4/inode.c\n+++ b/fs/ext4/inode.c\n@@ -3436,7 +3436,7 @@ static bool ext4_inode_datasync_dirty(struct inode *inode)\n \t}\n \n \t/* Any metadata buffers to write? */\n-\tif (inode_has_buffers(inode))\n+\tif (mmb_has_buffers(&inode->i_mapping->i_metadata_bhs))\n \t\treturn true;\n \treturn inode_state_read_once(inode) & I_DIRTY_DATASYNC;\n }\ndiff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h\nindex 20636599d858..44094fd476f5 100644\n--- a/include/linux/buffer_head.h\n+++ b/include/linux/buffer_head.h\n@@ -515,7 +515,7 @@ bool block_dirty_folio(struct address_space *mapping, struct folio *folio);\n \n void buffer_init(void);\n bool try_to_free_buffers(struct folio *folio);\n-int inode_has_buffers(struct inode *inode);\n+bool mmb_has_buffers(struct mapping_metadata_bhs *mmb);\n void invalidate_inode_buffers(struct inode *inode);\n int sync_mapping_buffers(struct address_space *mapping);\n void invalidate_bh_lrus(void);\n", "prefixes": [ "32/42" ] }