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Tue, 03 Mar 2026 10:34:40 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 4D160A0A1B; Tue, 3 Mar 2026 11:34:40 +0100 (CET) From: Jan Kara To: Cc: Christian Brauner , Al Viro , , Ted Tso , "Tigran A. Aivazian" , David Sterba , OGAWA Hirofumi , Muchun Song , Oscar Salvador , David Hildenbrand , linux-mm@kvack.org, linux-aio@kvack.org, Benjamin LaHaise , Jan Kara Subject: [PATCH 0/32] fs: Move metadata bh tracking from address_space Date: Tue, 3 Mar 2026 11:33:49 +0100 Message-ID: <20260303101717.27224-1-jack@suse.cz> X-Mailer: git-send-email 2.51.0 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3005; i=jack@suse.cz; h=from:subject:message-id; bh=UbBPqAcv2kV/Q4CNByWNsI4Gp7M+jn4qLkYn8cP+R8A=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBpprkMYYq5ex/qPGCddgeRA95TW6T29xG3oZcwa 9/pZCmZiICJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCaaa5DAAKCRCcnaoHP2RA 2d1UB/9/qfK53DX5rvT8+evw97coaewuS0fQW9uwuwRy19Te5htSwgwrDlxVdnAjxdPTDY832Zf OpsNY30Z32u9RG0pWG51BpraVwhf+/2MszT//06tOH7Hwn8BbdDiizKz5vq/Q2XSNU2mG95VmNt CQtLCDqJ8Af26NQdlIs1lhYbyPmKAG65aNny4KIwgSAfTQ8Kwi6k8WWtkgj2nkGnsQ6jh78QNXw a4cbhTbKSK3lEX8jT4bxbop6rZsmvNhPrUdUwKzjVmEzkHMLi+ddsFc8vlQpsBECnSaj5DoiXe+ 0AEhtReRU7oy3u6KT/zgv73jh80SHUOG0h4nkP1HWJsmjlSz X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: 84xrnbtfzmqd793ozekoe58gd56tw6oc X-Rspamd-Queue-Id: 8CD5D1C0002 X-Rspamd-Server: rspam03 X-HE-Tag: 1772534082-985327 X-HE-Meta: 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 WzC/N25q 6xbGSwrLny5ukJbBQcPbjr+YHJDTFPGY/OyzZqpEzrCBiJXBNQ1mErBlyPNTo4AlJsMCFj0Remc62adwW2MIR1DSbeg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, this patch series cleans up the mess that has accumulated over the years in metadata buffer_head tracking for inodes, moves the tracking into dedicated structure in filesystem-private part of the inode (so that we don't use private_list, private_data, and private_lock in struct address_space), and also moves couple other users of private_data and private_list so these are removed from struct address_space saving 3 longs in struct inode for 99% of inodes. I would like to get rid of private_lock in struct address_space as well however the locking changes for buffer_heads are non-trivial there and the patch series is long enough as is. So let's leave that for another time. The patches have survived some testing with fstests and ltp however I didn't test AFFS, HUGETLBFS, and KVM guest_memfd changes so a help with testing those would be very welcome. Thanks. block/bdev.c | 1 fs/affs/affs.h | 2 fs/affs/dir.c | 1 fs/affs/file.c | 1 fs/affs/inode.c | 2 fs/affs/super.c | 6 fs/affs/symlink.c | 1 fs/aio.c | 78 +++++++- fs/bfs/bfs.h | 2 fs/bfs/dir.c | 1 fs/bfs/file.c | 4 fs/bfs/inode.c | 9 + fs/buffer.c | 387 +++++++++++++++++--------------------------- fs/ext2/ext2.h | 2 fs/ext2/file.c | 1 fs/ext2/inode.c | 3 fs/ext2/namei.c | 2 fs/ext2/super.c | 6 fs/ext2/symlink.c | 2 fs/ext4/ext4.h | 4 fs/ext4/file.c | 1 fs/ext4/inode.c | 9 - fs/ext4/namei.c | 2 fs/ext4/super.c | 9 - fs/ext4/symlink.c | 3 fs/fat/fat.h | 2 fs/fat/file.c | 1 fs/fat/inode.c | 16 + fs/fat/namei_msdos.c | 1 fs/fat/namei_vfat.c | 1 fs/gfs2/glock.c | 1 fs/hugetlbfs/inode.c | 10 - fs/inode.c | 24 +- fs/minix/file.c | 1 fs/minix/inode.c | 10 + fs/minix/minix.h | 2 fs/minix/namei.c | 1 fs/ntfs3/file.c | 3 fs/ocfs2/dlmglue.c | 1 fs/ocfs2/namei.c | 3 fs/udf/file.c | 1 fs/udf/inode.c | 2 fs/udf/namei.c | 1 fs/udf/super.c | 6 fs/udf/symlink.c | 1 fs/udf/udf_i.h | 1 fs/udf/udfdecl.h | 1 include/linux/buffer_head.h | 6 include/linux/fs.h | 11 - include/linux/hugetlb.h | 1 mm/hugetlb.c | 10 - virt/kvm/guest_memfd.c | 12 - 52 files changed, 360 insertions(+), 309 deletions(-) Honza