Fix compile error due to congestion_wait() changes

[Trond Myklebust]

Move the definition of BLK_RW_ASYNC/BLK_RW_SYNC into linux/backing-dev.h so
that it is available to all callers of set/clear_bdi_congested().

This fixes a compile error in fs/fuse/dev.c:
linux-2.6/fs/fuse/dev.c: In function ârequest_endâ:
linux-2.6/fs/fuse/dev.c:289: error: âBLK_RW_SYNCâ undeclared (first use in this function)
linux-2.6/fs/fuse/dev.c:289: error: (Each undeclared identifier is reported only once
linux-2.6/fs/fuse/dev.c:289: error: for each function it appears in.)
linux-2.6/fs/fuse/dev.c:290: error: âBLK_RW_ASYNCâ undeclared (first use in this function)
linux-2.6/fs/fuse/dev.c: In function âfuse_request_send_nowait_lockedâ:
linux-2.6/fs/fuse/dev.c:417: error: âBLK_RW_SYNCâ undeclared (first use in this function)
linux-2.6/fs/fuse/dev.c:418: error: âBLK_RW_ASYNCâ undeclared (first use in this function)
make[3]: *** [fs/fuse/dev.o] Error 1
make[2]: *** [fs/fuse] Error 2

Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
---

 include/linux/backing-dev.h |    5 +++++
 include/linux/blkdev.h      |    5 -----
 2 files changed, 5 insertions(+), 5 deletions(-)


diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 3a52a63..1d52425 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -229,6 +229,11 @@ static inline int bdi_rw_congested(struct backing_dev_info *bdi)
 				  (1 << BDI_async_congested));
 }
 
+enum {
+	BLK_RW_ASYNC	= 0,
+	BLK_RW_SYNC	= 1,
+};
+
 void clear_bdi_congested(struct backing_dev_info *bdi, int sync);
 void set_bdi_congested(struct backing_dev_info *bdi, int sync);
 long congestion_wait(int sync, long timeout);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 0146e0f..e7cb5db 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -70,11 +70,6 @@ enum rq_cmd_type_bits {
 	REQ_TYPE_ATA_PC,
 };
 
-enum {
-	BLK_RW_ASYNC	= 0,
-	BLK_RW_SYNC	= 1,
-};
-
 /*
  * For request of type REQ_TYPE_LINUX_BLOCK, rq->cmd[0] is the opcode being
  * sent down (similar to how REQ_TYPE_BLOCK_PC means that ->cmd[] holds a


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