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btrfs: use file_offset to limit bios size in calc_bio_boundaries

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btrfs_ordered_extent->disk_bytenr can be rewritten by the zoned I/O
completion handler, and thus in general is not a good idea to limit I/O
size.  But the maximum bio size calculation can easily be done using the
file_offset fields in the btrfs_ordered_extent and btrfs_bio structures,
so switch to that instead.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig 2022-12-12 08:37:18 +01:00 • committed by David Sterba
parent a724f313f8
commit 72fcf1a47b
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/extent_io.c
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@ -964,8 +964,8 @@ static void calc_bio_boundaries(struct btrfs_bio_ctrl *bio_ctrl,
ordered = btrfs_lookup_ordered_extent(inode, file_offset);
if (ordered) {
bio_ctrl->len_to_oe_boundary = min_t(u32, U32_MAX,
ordered->disk_bytenr +
ordered->disk_num_bytes - logical);
ordered->file_offset +
ordered->disk_num_bytes - file_offset);
btrfs_put_ordered_extent(ordered);
return;
}