diff options
| author | Christoph Hellwig <hch@lst.de> | 2015-04-24 22:41:01 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-05-19 18:17:03 +0300 |
| commit | b25de9d6da49b1a8760a89672283128aa8c78345 (patch) | |
| tree | 446d9186aebfbdb2156e438b6c85d84d44dd51a2 /fs/btrfs/disk-io.c | |
| parent | 4ecd4fef3a074c8bb43c391a57742c422469ebbd (diff) | |
| download | linux-b25de9d6da49b1a8760a89672283128aa8c78345.tar.xz | |
block: remove BIO_EOPNOTSUPP
Since the big barrier rewrite/removal in 2007 we never fail FLUSH or
FUA requests, which means we can remove the magic BIO_EOPNOTSUPP flag
to help propagating those to the buffer_head layer.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 2ef9a4b72d06..e08a926fe12c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3269,11 +3269,8 @@ static int write_dev_supers(struct btrfs_device *device, */ static void btrfs_end_empty_barrier(struct bio *bio, int err) { - if (err) { - if (err == -EOPNOTSUPP) - set_bit(BIO_EOPNOTSUPP, &bio->bi_flags); + if (err) clear_bit(BIO_UPTODATE, &bio->bi_flags); - } if (bio->bi_private) complete(bio->bi_private); bio_put(bio); @@ -3301,11 +3298,7 @@ static int write_dev_flush(struct btrfs_device *device, int wait) wait_for_completion(&device->flush_wait); - if (bio_flagged(bio, BIO_EOPNOTSUPP)) { - printk_in_rcu("BTRFS: disabling barriers on dev %s\n", - rcu_str_deref(device->name)); - device->nobarriers = 1; - } else if (!bio_flagged(bio, BIO_UPTODATE)) { + if (!bio_flagged(bio, BIO_UPTODATE)) { ret = -EIO; btrfs_dev_stat_inc_and_print(device, BTRFS_DEV_STAT_FLUSH_ERRS); |