Re: [PATCH 0/3] net/ceph/messenger: micro-optimizations for out_msg

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On Wed, 2025-08-06 at 11:48 +0200, Max Kellermann wrote:
> These patches reduce reloads of con->out_msg by passing pointers that
> we already have in local variables (i.e. registers) as parameters.
> 
> Access to con->out_queue is now gone completely from v1/v2 and only
> few references to con->out_msg remain.  In the long run, I'd like to
> get rid of con->out_msg completely and instead send the whole
> con->out_queue in one kernel_sendmsg() call.  This patch series helps
> with preparing that.
> 
> Max Kellermann (3):
>   net/ceph/messenger: ceph_con_get_out_msg() returns the message pointer
>   net/ceph/messenger_v[12]: pass ceph_msg* instead of loading
>     con->out_msg
>   net/ceph/messenger: add empty check to ceph_con_get_out_msg()
> 
>  include/linux/ceph/messenger.h |   6 +-
>  net/ceph/messenger.c           |  12 +--
>  net/ceph/messenger_v1.c        |  59 ++++++------
>  net/ceph/messenger_v2.c        | 160 ++++++++++++++++-----------------
>  4 files changed, 119 insertions(+), 118 deletions(-)

I will apply this patchset on testing branch and do the testing today.

Thanks,
Slava.




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