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authorChristoph Hellwig <hch@lst.de>2020-07-01 12:06:22 +0300
committerJens Axboe <axboe@kernel.dk>2020-07-09 02:20:46 +0300
commit21cf866145047f8bfecb38ec8d2fed64464c074f (patch)
tree90eb0e7a2a318eed587c06ceb474c0f89d498c91 /drivers/md/dm-thin.c
parent8c911f3d4c074a17955a1757c9d1d5a9a5209ca5 (diff)
downloadlinux-21cf866145047f8bfecb38ec8d2fed64464c074f.tar.xz
writeback: remove bdi->congested_fn
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>
Diffstat (limited to 'drivers/md/dm-thin.c')
-rw-r--r--drivers/md/dm-thin.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index fe2de2888709..fff4c50df74d 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -326,7 +326,6 @@ struct pool_c {
struct pool *pool;
struct dm_dev *data_dev;
struct dm_dev *metadata_dev;
- struct dm_target_callbacks callbacks;
dm_block_t low_water_blocks;
struct pool_features requested_pf; /* Features requested during table load */
@@ -2796,18 +2795,6 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio)
}
}
-static int pool_is_congested(struct dm_target_callbacks *cb, int bdi_bits)
-{
- struct pool_c *pt = container_of(cb, struct pool_c, callbacks);
- struct request_queue *q;
-
- if (get_pool_mode(pt->pool) == PM_OUT_OF_DATA_SPACE)
- return 1;
-
- q = bdev_get_queue(pt->data_dev->bdev);
- return bdi_congested(q->backing_dev_info, bdi_bits);
-}
-
static void requeue_bios(struct pool *pool)
{
struct thin_c *tc;
@@ -3420,9 +3407,6 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv)
dm_pool_register_pre_commit_callback(pool->pmd,
metadata_pre_commit_callback, pool);
- pt->callbacks.congested_fn = pool_is_congested;
- dm_table_add_target_callbacks(ti->table, &pt->callbacks);
-
mutex_unlock(&dm_thin_pool_table.mutex);
return 0;