remove bdi_congested() and wb_congested() and related functions

These functions are no longer useful as no BDIs report congestions any
more.

Removing the test on bdi_write_contested() in current_may_throttle()
could cause a small change in behaviour, but only when PF_LOCAL_THROTTLE
is set.

So replace the calls by 'false' and simplify the code - and remove the
functions.

[[email protected]: fix build]

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: NeilBrown <[email protected]>
Acked-by: Ryusuke Konishi <[email protected]>	[nilfs]
Cc: Anna Schumaker <[email protected]>
Cc: Chao Yu <[email protected]>
Cc: Darrick J. Wong <[email protected]>
Cc: Ilya Dryomov <[email protected]>
Cc: Jaegeuk Kim <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Jeff Layton <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Lars Ellenberg <[email protected]>
Cc: Miklos Szeredi <[email protected]>
Cc: Paolo Valente <[email protected]>
Cc: Philipp Reisner <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Wu Fengguang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions