On 3/10/20 1:37 PM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 5.4.25 release.
This fails to compile due to broken patch 001/168: "block, bfq: get a ref to a group when adding it to a service tree":
.. block/bfq-wf2q.c: In function 'bfq_get_entity': ./include/linux/kernel.h:994:51: error: 'struct bfq_group' has no member named 'entity' ..
The calls to bfq_get_entity::bfqg_and_blkg_get and bfq_forget_entity::bfqg_and_blkg_put in bfq-wf2q.c need to be wrapped in #ifdef CONFIG_BFQ_GROUP_IOSCHED, otherwise the build will fail when CONFIG_BFQ_GROUP_IOSCHED is not enabled. This horribly error-prone #ifdef mess was finally removed in upstream commit 4d8340d0d4d9. For 5.4 we'll either need that as well or add them back.
-h