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    [PATCH] separate bdi congestion functions from queue congestion functions · 3fcfab16
    Andrew Morton 提交于
    Separate out the concept of "queue congestion" from "backing-dev congestion".
    Congestion is a backing-dev concept, not a queue concept.
    
    The blk_* congestion functions are retained, as wrappers around the core
    backing-dev congestion functions.
    
    This proper layering is needed so that NFS can cleanly use the congestion
    functions, and so that CONFIG_BLOCK=n actually links.
    
    Cc: "Thomas Maier" <balagi@justmail.de>
    Cc: "Jens Axboe" <jens.axboe@oracle.com>
    Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
    Cc: David Howells <dhowells@redhat.com>
    Cc: Peter Osterlund <petero2@telia.com>
    Signed-off-by: NAndrew Morton <akpm@osdl.org>
    Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
    3fcfab16
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