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authorChristoph Hellwig <hch@lst.de>2020-07-01 11:06:22 +0200
committerJens Axboe <axboe@kernel.dk>2020-07-08 17:20:46 -0600
commit21cf866145047f8bfecb38ec8d2fed64464c074f (patch)
tree90eb0e7a2a318eed587c06ceb474c0f89d498c91 /drivers/md/dm-era-target.c
parent8c911f3d4c074a17955a1757c9d1d5a9a5209ca5 (diff)
downloadlinux-21cf866145047f8bfecb38ec8d2fed64464c074f.tar.bz2
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-era-target.c')
-rw-r--r--drivers/md/dm-era-target.c15
1 files changed, 0 insertions, 15 deletions
diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index 566ddbdb16a4..b24e3839bb3a 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -1137,7 +1137,6 @@ static int metadata_get_stats(struct era_metadata *md, void *ptr)
struct era {
struct dm_target *ti;
- struct dm_target_callbacks callbacks;
struct dm_dev *metadata_dev;
struct dm_dev *origin_dev;
@@ -1375,18 +1374,6 @@ static void stop_worker(struct era *era)
/*----------------------------------------------------------------
* Target methods
*--------------------------------------------------------------*/
-static int dev_is_congested(struct dm_dev *dev, int bdi_bits)
-{
- struct request_queue *q = bdev_get_queue(dev->bdev);
- return bdi_congested(q->backing_dev_info, bdi_bits);
-}
-
-static int era_is_congested(struct dm_target_callbacks *cb, int bdi_bits)
-{
- struct era *era = container_of(cb, struct era, callbacks);
- return dev_is_congested(era->origin_dev, bdi_bits);
-}
-
static void era_destroy(struct era *era)
{
if (era->md)
@@ -1514,8 +1501,6 @@ static int era_ctr(struct dm_target *ti, unsigned argc, char **argv)
ti->flush_supported = true;
ti->num_discard_bios = 1;
- era->callbacks.congested_fn = era_is_congested;
- dm_table_add_target_callbacks(ti->table, &era->callbacks);
return 0;
}