| commit | 1503140d3ec2be9b917d2f8f7c64cb77b79a215b | |
| author | Jan Schmidt <list.btrfs@jan-o-sch.net> | |
| Thu, 16 Jun 2011 12:37:03 +0000 (16 14:37 +0200) | ||
| committer | Jan Schmidt <list.btrfs@jan-o-sch.net> | |
| Thu, 29 Sep 2011 11:38:42 +0000 (29 13:38 +0200) | ||
| tree | 6138ec14ae6301c69687a769cc96a39044ee49aa | treesnapshot (tar.gz zip) |
| parent | a1d3c4786a4b9c71c0767aa656a759968f7554b6 | commitdiff |
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 <list.btrfs@jan-o-sch.net>
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 <list.btrfs@jan-o-sch.net>
| fs/btrfs/inode.c | diffblobblamehistory |