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writeback: remove bdi->congested_fn

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Except for pktdvd, the only places setting congested bits are file
systems that allocate their own backing_dev_info structures.  And
pktdvd is a deprecated driver that isn't useful in stack setup
either.  So remove the dead congested_fn stacking infrastructure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Song Liu <song@kernel.org>
Acked-by: David Sterba <dsterba@suse.com>
[axboe: fixup unused variables in bcache/request.c]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-07-01 11:06:22 +02:00
committed by Jens Axboe
parent 8c911f3d4c
commit 21cf866145
23 changed files with 1 additions and 468 deletions
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25
drivers/md/raid5.c
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@@ -5099,28 +5099,6 @@ static void activate_bit_delay(struct r5conf *conf,
}
}
static int raid5_congested(struct mddev *mddev, int bits)
{
struct r5conf *conf = mddev->private;
/* No difference between reads and writes. Just check
* how busy the stripe_cache is
*/
if (test_bit(R5_INACTIVE_BLOCKED, &conf->cache_state))
return 1;
/* Also checks whether there is pressure on r5cache log space */
if (test_bit(R5C_LOG_TIGHT, &conf->cache_state))
return 1;
if (conf->quiesce)
return 1;
if (atomic_read(&conf->empty_inactive_list_nr))
return 1;
return 0;
}
static int in_chunk_boundary(struct mddev *mddev, struct bio *bio)
{
struct r5conf *conf = mddev->private;
@@ -8427,7 +8405,6 @@ static struct md_personality raid6_personality =
.finish_reshape = raid5_finish_reshape,
.quiesce = raid5_quiesce,
.takeover = raid6_takeover,
.congested = raid5_congested,
.change_consistency_policy = raid5_change_consistency_policy,
};
static struct md_personality raid5_personality =
@@ -8452,7 +8429,6 @@ static struct md_personality raid5_personality =
.finish_reshape = raid5_finish_reshape,
.quiesce = raid5_quiesce,
.takeover = raid5_takeover,
.congested = raid5_congested,
.change_consistency_policy = raid5_change_consistency_policy,
};
@@ -8478,7 +8454,6 @@ static struct md_personality raid4_personality =
.finish_reshape = raid5_finish_reshape,
.quiesce = raid5_quiesce,
.takeover = raid4_takeover,
.congested = raid5_congested,
.change_consistency_policy = raid5_change_consistency_policy,
};