tree 2f38bdc1cf7ea6c924f6e1d52cf5913c370e08b6
parent 4246a0b63bd8f56a1469b12eafeb875b1041a451
author Jens Axboe <axboe@fb.com> 1437763079 -0600
committer Jens Axboe <axboe@fb.com> 1438181720 -0600

block: manipulate bio->bi_flags through helpers

Some places use helpers now, others don't. We only have the 'is set'
helper, add helpers for setting and clearing flags too.

It was a bit of a mess of atomic vs non-atomic access. With
BIO_UPTODATE gone, we don't have any risk of concurrent access to the
flags. So relax the restriction and don't make any of them atomic. The
flags that do have serialization issues (reffed and chained), we
already handle those separately.

Signed-off-by: Jens Axboe <axboe@fb.com>