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Fri, 7 Jun 2024 14:40:01 +0000 Received: from DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088]) by DM6PR10MB4313.namprd10.prod.outlook.com ([fe80::4f45:f4ab:121:e088%6]) with mapi id 15.20.7633.033; Fri, 7 Jun 2024 14:40:01 +0000 From: John Garry To: axboe@kernel.dk, tytso@mit.edu, dchinner@redhat.com, viro@zeniv.linux.org.uk, brauner@kernel.org, djwong@kernel.org, jack@suse.com, chandan.babu@oracle.com, hch@lst.de Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, gfs2@lists.linux.dev, linux-xfs@vger.kernel.org, catherine.hoang@oracle.com, ritesh.list@gmail.com, mcgrof@kernel.org, mikulas@artax.karlin.mff.cuni.cz, agruenba@redhat.com, miklos@szeredi.hu, martin.petersen@oracle.com, John Garry Subject: [PATCH v4 02/22] iomap: Allow filesystems set IO block zeroing size Date: Fri, 7 Jun 2024 14:38:59 +0000 Message-Id: <20240607143919.2622319-3-john.g.garry@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240607143919.2622319-1-john.g.garry@oracle.com> References: <20240607143919.2622319-1-john.g.garry@oracle.com> X-ClientProxiedBy: MN2PR06CA0025.namprd06.prod.outlook.com (2603:10b6:208:23d::30) To DM6PR10MB4313.namprd10.prod.outlook.com (2603:10b6:5:212::20) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB4313:EE_|BY5PR10MB4226:EE_ X-MS-Office365-Filtering-Correlation-Id: a6bf1a89-77bc-43f8-24d8-08dc86ffb637 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|376005|1800799015|7416005|366007; 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The value in io_block_size does not have to be a power-of-2, so fix up zeroing code to handle that. Signed-off-by: John Garry --- block/fops.c | 1 + fs/btrfs/inode.c | 1 + fs/erofs/data.c | 1 + fs/erofs/zmap.c | 1 + fs/ext2/inode.c | 1 + fs/ext4/extents.c | 1 + fs/ext4/inode.c | 1 + fs/f2fs/data.c | 1 + fs/fuse/dax.c | 1 + fs/gfs2/bmap.c | 1 + fs/hpfs/file.c | 1 + fs/iomap/direct-io.c | 23 +++++++++++++++++++---- fs/xfs/xfs_iomap.c | 1 + fs/zonefs/file.c | 2 ++ include/linux/iomap.h | 2 ++ 15 files changed, 35 insertions(+), 4 deletions(-) diff --git a/block/fops.c b/block/fops.c index 9d6d86ebefb9..020443078630 100644 --- a/block/fops.c +++ b/block/fops.c @@ -402,6 +402,7 @@ static int blkdev_iomap_begin(struct inode *inode, loff_t offset, loff_t length, iomap->addr = iomap->offset; iomap->length = isize - iomap->offset; iomap->flags |= IOMAP_F_BUFFER_HEAD; /* noop for !CONFIG_BUFFER_HEAD */ + iomap->io_block_size = i_blocksize(inode); return 0; } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 753db965f7c0..665811b1578b 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7740,6 +7740,7 @@ static int btrfs_dio_iomap_begin(struct inode *inode, loff_t start, iomap->offset = start; iomap->bdev = fs_info->fs_devices->latest_dev->bdev; iomap->length = len; + iomap->io_block_size = i_blocksize(inode); free_extent_map(em); return 0; diff --git a/fs/erofs/data.c b/fs/erofs/data.c index 8be60797ea2f..ea9d2f3eadb3 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -305,6 +305,7 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, if (flags & IOMAP_DAX) iomap->addr += mdev.m_dax_part_off; } + iomap->io_block_size = i_blocksize(inode); return 0; } diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c index 9b248ee5fef2..6ee89f6a078c 100644 --- a/fs/erofs/zmap.c +++ b/fs/erofs/zmap.c @@ -749,6 +749,7 @@ static int z_erofs_iomap_begin_report(struct inode *inode, loff_t offset, if (iomap->offset >= inode->i_size) iomap->length = length + offset - map.m_la; } + iomap->io_block_size = i_blocksize(inode); iomap->flags = 0; return 0; } diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 0caa1650cee8..7a5539a52844 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -862,6 +862,7 @@ static int ext2_iomap_begin(struct inode *inode, loff_t offset, loff_t length, iomap->length = (u64)ret << blkbits; iomap->flags |= IOMAP_F_MERGED; } + iomap->io_block_size = i_blocksize(inode); if (new) iomap->flags |= IOMAP_F_NEW; diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index e067f2dd0335..ce3269874fde 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4933,6 +4933,7 @@ static int ext4_iomap_xattr_fiemap(struct inode *inode, struct iomap *iomap) iomap->length = length; iomap->type = iomap_type; iomap->flags = 0; + iomap->io_block_size = i_blocksize(inode); out: return error; } diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4bae9ccf5fe0..3ec82e4d71c4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3235,6 +3235,7 @@ static void ext4_set_iomap(struct inode *inode, struct iomap *iomap, iomap->bdev = inode->i_sb->s_bdev; iomap->offset = (u64) map->m_lblk << blkbits; iomap->length = (u64) map->m_len << blkbits; + iomap->io_block_size = i_blocksize(inode); if ((map->m_flags & EXT4_MAP_MAPPED) && !ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index b9b0debc6b3d..6c12641b9a7b 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -4233,6 +4233,7 @@ static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, } iomap->addr = IOMAP_NULL_ADDR; } + iomap->io_block_size = i_blocksize(inode); if (map.m_flags & F2FS_MAP_NEW) iomap->flags |= IOMAP_F_NEW; diff --git a/fs/fuse/dax.c b/fs/fuse/dax.c index 12ef91d170bb..68ddc74cb31e 100644 --- a/fs/fuse/dax.c +++ b/fs/fuse/dax.c @@ -577,6 +577,7 @@ static int fuse_iomap_begin(struct inode *inode, loff_t pos, loff_t length, iomap->flags = 0; iomap->bdev = NULL; iomap->dax_dev = fc->dax->dev; + iomap->io_block_size = i_blocksize(inode); /* * Both read/write and mmap path can race here. So we need something diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 1795c4e8dbf6..8d2de42b1da9 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -927,6 +927,7 @@ static int __gfs2_iomap_get(struct inode *inode, loff_t pos, loff_t length, out: iomap->bdev = inode->i_sb->s_bdev; + iomap->io_block_size = i_blocksize(inode); unlock: up_read(&ip->i_rw_mutex); return ret; diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index 1bb8d97cd9ae..5d2718faf520 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -149,6 +149,7 @@ static int hpfs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, iomap->addr = IOMAP_NULL_ADDR; iomap->length = 1 << blkbits; } + iomap->io_block_size = i_blocksize(inode); hpfs_unlock(sb); return 0; diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index f3b43d223a46..5be8d886ab4a 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -277,7 +277,7 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, { const struct iomap *iomap = &iter->iomap; struct inode *inode = iter->inode; - unsigned int fs_block_size = i_blocksize(inode), pad; + u64 io_block_size = iomap->io_block_size; loff_t length = iomap_length(iter); loff_t pos = iter->pos; blk_opf_t bio_opf; @@ -287,6 +287,7 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, int nr_pages, ret = 0; size_t copied = 0; size_t orig_count; + unsigned int pad; if ((pos | length) & (bdev_logical_block_size(iomap->bdev) - 1) || !bdev_iter_is_aligned(iomap->bdev, dio->submit.iter)) @@ -355,7 +356,14 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, if (need_zeroout) { /* zero out from the start of the block to the write offset */ - pad = pos & (fs_block_size - 1); + if (is_power_of_2(io_block_size)) { + pad = pos & (io_block_size - 1); + } else { + loff_t _pos = pos; + + pad = do_div(_pos, io_block_size); + } + if (pad) iomap_dio_zero(iter, dio, pos - pad, pad); } @@ -429,9 +437,16 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, if (need_zeroout || ((dio->flags & IOMAP_DIO_WRITE) && pos >= i_size_read(inode))) { /* zero out from the end of the write to the end of the block */ - pad = pos & (fs_block_size - 1); + if (is_power_of_2(io_block_size)) { + pad = pos & (io_block_size - 1); + } else { + loff_t _pos = pos; + + pad = do_div(_pos, io_block_size); + } + if (pad) - iomap_dio_zero(iter, dio, pos, fs_block_size - pad); + iomap_dio_zero(iter, dio, pos, io_block_size - pad); } out: /* Undo iter limitation to current extent */ diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 378342673925..ecb4cae88248 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -127,6 +127,7 @@ xfs_bmbt_to_iomap( } iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff); iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount); + iomap->io_block_size = i_blocksize(VFS_I(ip)); if (mapping_flags & IOMAP_DAX) iomap->dax_dev = target->bt_daxdev; else diff --git a/fs/zonefs/file.c b/fs/zonefs/file.c index 3b103715acc9..bf2cc4bee309 100644 --- a/fs/zonefs/file.c +++ b/fs/zonefs/file.c @@ -50,6 +50,7 @@ static int zonefs_read_iomap_begin(struct inode *inode, loff_t offset, iomap->addr = (z->z_sector << SECTOR_SHIFT) + iomap->offset; iomap->length = isize - iomap->offset; } + iomap->io_block_size = i_blocksize(inode); mutex_unlock(&zi->i_truncate_mutex); trace_zonefs_iomap_begin(inode, iomap); @@ -99,6 +100,7 @@ static int zonefs_write_iomap_begin(struct inode *inode, loff_t offset, iomap->type = IOMAP_MAPPED; iomap->length = isize - iomap->offset; } + iomap->io_block_size = i_blocksize(inode); mutex_unlock(&zi->i_truncate_mutex); trace_zonefs_iomap_begin(inode, iomap); diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 6fc1c858013d..d63a35b77907 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -103,6 +103,8 @@ struct iomap { void *private; /* filesystem private */ const struct iomap_folio_ops *folio_ops; u64 validity_cookie; /* used with .iomap_valid() */ + /* io block zeroing size, not necessarily a power-of-2 */ + u64 io_block_size; }; static inline sector_t iomap_sector(const struct iomap *iomap, loff_t pos)