[PATCH] blk-iocost: drop selecting undefined BLK_RQ_IO_DATA_LEN

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Commit cd006509b0a9 ("blk-iocost: account for IO size when testing
latencies") selects the non-existing config BLK_RQ_IO_DATA_LEN in
config BLK_CGROUP_IOCOST.

Hence, ./scripts/checkkconfigsymbols.py warns:

  BLK_RQ_IO_DATA_LEN
  Referencing files: block/Kconfig

Probably, this select is just some unintended left-over from an earlier
draft version; BLK_RQ_IO_DATA_LEN was never defined in any commit in the
repository. So, drop this dead select to an undefined config.

Fixes: cd006509b0a9 ("blk-iocost: account for IO size when testing latencies")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
---
 block/Kconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/block/Kconfig b/block/Kconfig
index c6ce41a5e5b2..486bc6003b9e 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -133,7 +133,6 @@ config BLK_CGROUP_FC_APPID
 config BLK_CGROUP_IOCOST
 	bool "Enable support for cost model based cgroup IO controller"
 	depends on BLK_CGROUP
-	select BLK_RQ_IO_DATA_LEN
 	select BLK_RQ_ALLOC_TIME
 	help
 	Enabling this option enables the .weight interface for cost
-- 
2.26.2




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