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[PATCH] separate bdi congestion functions from queue congestion functions

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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" <[email protected]>
Cc: "Jens Axboe" <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: David Howells <[email protected]>
Cc: Peter Osterlund <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2006-10-19 23:28:16 -07:00 • committed by Linus Torvalds
commit 3fcfab16c5
17 changed files with 126 additions and 104 deletions
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3
mm/Makefile
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@ -10,7 +10,8 @@ mmu-$(CONFIG_MMU) := fremap.o highmem.o madvise.o memory.o mincore.o \
obj-y := bootmem.o filemap.o mempool.o oom_kill.o fadvise.o \
page_alloc.o page-writeback.o pdflush.o \
readahead.o swap.o truncate.o vmscan.o \
prio_tree.o util.o mmzone.o vmstat.o $(mmu-y)
prio_tree.o util.o mmzone.o vmstat.o backing-dev.o \
$(mmu-y)
ifeq ($(CONFIG_MMU)$(CONFIG_BLOCK),yy)
obj-y += bounce.o