From: Christoph Hellwig Date: Mon, 12 Dec 2022 07:37:18 +0000 (+0100) Subject: btrfs: use file_offset to limit bios size in calc_bio_boundaries X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=72fcf1a47b8daba82ffdeddd630688df5ac1bddb;p=linux.git btrfs: use file_offset to limit bios size in calc_bio_boundaries 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 Signed-off-by: Christoph Hellwig Signed-off-by: David Sterba --- diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 287e25edb3ef4..d823994cf62a8 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -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; }