Re: [PATCH 05/15] blkcg: update blkg_lookup_create to do locking

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Aug 30, 2018 at 09:53:46PM -0400, Dennis Zhou wrote:
> From: "Dennis Zhou (Facebook)" <dennisszhou@xxxxxxxxx>
> 
> To know when to create a blkg, the general pattern is to do a
> blkg_lookup and if that fails, lock and then do a lookup again and if
> that fails finally create. It doesn't make much sense for everyone who
> wants to do creation to write this themselves.
> 
> This changes blkg_lookup_create to do locking and implement this
> pattern. The old blkg_lookup_create is renamed to __blkg_lookup_create.
> If a call site wants to do its own error handling or already owns the
> queue lock, they can use __blkg_lookup_create.
> 
> Signed-off-by: Dennis Zhou <dennisszhou@xxxxxxxxx>

Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>

Thanks,

Josef



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux