Re: [PATCH 5.4 000/168] 5.4.25-stable review

[Greg Kroah-Hartman]

On Tue, Mar 10, 2020 at 03:02:37PM +0100, Holger Hoffstätte wrote:
> 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.

Ick, that's a mess.

I'll go drop that patch now, odd that it passed my build tests...

thanks,

greg k-h