[Gluster-devel] [RFC] alter inode table lock from mutex to rwlock

[Changwei Ge]

Hi Amar,

Thanks for your reply, I will try it out then.


     -Changwei


On 2019/8/22 8:48 下午, Amar Tumballi Suryanarayan wrote:
> Hi Changwei Ge,
>
> On Thu, Aug 22, 2019 at 5:57 PM Changwei Ge <chge at linux.alibaba.com 
> <mailto:chge at linux.alibaba.com>> wrote:
>
>     Hi,
>
>     Now inode_table_t:lock is type of mutex which I think we can use
>     ‘pthread_rwlock' to replace it for a better concurrency.
>
>     Because phread_rwlock allows more than one thread accessing inode
>     table
>     at the same time.
>     Moreover, the critical section the lock is protecting won't take many
>     CPU cycles and no I/O and CPU fault/exception involved after a quick
>     glance at glusterfs code.
>     I hope I didn't miss something.
>     If I would get an ACK from major glusterfs developer, I will try
>     to do it.
>
>
> You are right. I believe this is possible. No harm in trying this out.
>
> Xavier, Raghavendra, Pranith, Nithya, do you think this is possible?
>
> Regards,
>
>     Thanks.
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> -- 
> Amar Tumballi (amarts)