[PATCH v15 27/42] btrfs: zoned: enable zone append writing for direct IO
STALE2049d
REVIEWED: 2 (2M)
From: Naohiro Aota <naohiro.aota@wdc.com>
Date: 2021-02-04 10:29:35
Also in:
linux-fsdevel
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
1 review trailer.
Likewise to buffered IO, enable zone append writing for direct IO when its used on a zoned block device. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> --- fs/btrfs/inode.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6dbab9293425..dd6fe8afd0e0 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c@@ -7738,6 +7738,9 @@ static int btrfs_dio_iomap_begin(struct inode *inode, loff_t start, iomap->bdev = fs_info->fs_devices->latest_bdev; iomap->length = len; + if (write && btrfs_use_zone_append(BTRFS_I(inode), em)) + iomap->flags |= IOMAP_F_ZONE_APPEND; + free_extent_map(em); return 0;
@@ -7964,6 +7967,8 @@ static void btrfs_end_dio_bio(struct bio *bio) if (err) dip->dio_bio->bi_status = err; + btrfs_record_physical_zoned(dip->inode, dip->logical_offset, bio); + bio_put(bio); btrfs_dio_private_put(dip); }
@@ -8124,6 +8129,19 @@ static blk_qc_t btrfs_submit_direct(struct inode *inode, struct iomap *iomap, bio->bi_end_io = btrfs_end_dio_bio; btrfs_io_bio(bio)->logical = file_offset; + WARN_ON_ONCE(write && btrfs_is_zoned(fs_info) && + fs_info->max_zone_append_size && + bio_op(bio) != REQ_OP_ZONE_APPEND); + + if (bio_op(bio) == REQ_OP_ZONE_APPEND) { + status = extract_ordered_extent(BTRFS_I(inode), bio, + file_offset); + if (status) { + bio_put(bio); + goto out_err; + } + } + ASSERT(submit_len >= clone_len); submit_len -= clone_len;
--
2.30.0