From 0fdf977d4576ee0decd612e22f6a837a239573cc Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 24 Mar 2022 17:06:28 +0100
Subject: [PATCH] btrfs: fix direct I/O writes for split bios on zoned devices
When a bio is split in btrfs_submit_direct, dip->file_offset contains
the file offset for the first bio. But this means the start value used
in btrfs_end_dio_bio to record the write location for zone devices is
incorrect for subsequent bios.
CC: stable@vger.kernel.org # 5.16+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
---
fs/btrfs/inode.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ac9a3ebc2db3..8bac68d8e96f 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7865,6 +7865,7 @@ static blk_status_t btrfs_submit_bio_start_direct_io(struct inode *inode,
static void btrfs_end_dio_bio(struct bio *bio)
{
struct btrfs_dio_private *dip = bio->bi_private;
+ struct btrfs_bio *bbio = btrfs_bio(bio);
blk_status_t err = bio->bi_status;
if (err)
@@ -7875,12 +7876,12 @@ static void btrfs_end_dio_bio(struct bio *bio)
bio->bi_iter.bi_size, err);
if (bio_op(bio) == REQ_OP_READ)
- err = btrfs_check_read_dio_bio(dip, btrfs_bio(bio), !err);
+ err = btrfs_check_read_dio_bio(dip, bbio, !err);
if (err)
dip->dio_bio->bi_status = err;
- btrfs_record_physical_zoned(dip->inode, dip->file_offset, bio);
+ btrfs_record_physical_zoned(dip->inode, bbio->file_offset, bio);
bio_put(bio);
btrfs_dio_private_put(dip);