From c31efbdf23a09468c9352f05443d5624dbbfd3c7 Mon Sep 17 00:00:00 2001 From: Nikolay Borisov Date: Fri, 3 Jul 2020 11:14:27 +0300 Subject: btrfs: record btrfs_device directly in btrfs_io_bio Instead of recording stripe_index and using that to access correct btrfs_device from btrfs_bio::stripes record the btrfs_device in btrfs_io_bio. This will enable endio handlers to increment device error counters on checksum errors. Reviewed-by: Johannes Thumshirn Signed-off-by: Nikolay Borisov Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) (limited to 'fs/btrfs/volumes.c') diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 62ae89b078f4..fb3502166e29 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6261,12 +6261,8 @@ static void btrfs_end_bio(struct bio *bio) atomic_inc(&bbio->error); if (bio->bi_status == BLK_STS_IOERR || bio->bi_status == BLK_STS_TARGET) { - unsigned int stripe_index = - btrfs_io_bio(bio)->stripe_index; - struct btrfs_device *dev; + struct btrfs_device *dev = btrfs_io_bio(bio)->device; - BUG_ON(stripe_index >= bbio->num_stripes); - dev = bbio->stripes[stripe_index].dev; if (dev->bdev) { if (bio_op(bio) == REQ_OP_WRITE) btrfs_dev_stat_inc_and_print(dev, @@ -6313,13 +6309,12 @@ static void btrfs_end_bio(struct bio *bio) } static void submit_stripe_bio(struct btrfs_bio *bbio, struct bio *bio, - u64 physical, int dev_nr) + u64 physical, struct btrfs_device *dev) { - struct btrfs_device *dev = bbio->stripes[dev_nr].dev; struct btrfs_fs_info *fs_info = bbio->fs_info; bio->bi_private = bbio; - btrfs_io_bio(bio)->stripe_index = dev_nr; + btrfs_io_bio(bio)->device = dev; bio->bi_end_io = btrfs_end_bio; bio->bi_iter.bi_sector = physical >> 9; btrfs_debug_in_rcu(fs_info, @@ -6420,8 +6415,7 @@ blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, else bio = first_bio; - submit_stripe_bio(bbio, bio, bbio->stripes[dev_nr].physical, - dev_nr); + submit_stripe_bio(bbio, bio, bbio->stripes[dev_nr].physical, dev); } btrfs_bio_counter_dec(fs_info); return BLK_STS_OK; -- cgit v1.2.3