From 1503140d3ec2be9b917d2f8f7c64cb77b79a215b Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Thu, 16 Jun 2011 14:37:03 +0200 Subject: [PATCH] btrfs: Do not use bio->bi_bdev after submission The block layer modifies bio->bi_bdev and bio->bi_sector while working on the bio, they do _not_ come back unmodified in the completion callback. To call add_page, we need at least some bi_bdev set, which is why the code was working, previously. With this patch, we use the latest_bdev from fsinfo instead of the leftover in the bio. This gives us the possibility to use the bi_bdev field for another purpose. Signed-off-by: Jan Schmidt --- fs/btrfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index efee8c7cfa45b..936a6fabaa9fe 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1915,7 +1915,7 @@ static int btrfs_io_failed_hook(struct bio *failed_bio, bio->bi_private = state; bio->bi_end_io = failed_bio->bi_end_io; bio->bi_sector = failrec->logical >> 9; - bio->bi_bdev = failed_bio->bi_bdev; + bio->bi_bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev; bio->bi_size = 0; bio_add_page(bio, page, failrec->len, start - page_offset(page));