remove mm/backing-dev.c:congestion_wait_interruptible()

congestion_wait_interruptible() is no longer used.

Signed-off-by: Adrian Bunk <[email protected]>
Acked-by: Trond Myklebust <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
2 files changed