Re: remove_duplicates() in builtin/fetch-pack.c is O(N^2)

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

On Thursday, May 24, 2012 07:04:34 pm Jeff King wrote:
> On Thu, May 24, 2012 at 06:54:56PM -0600, Martin Fick 
> > > Yes, exclusively warm. And all of the refs were
> We'd have to give some thought to potential race
> conditions, though. Usually pack-refs isn't modifying
> the ref, so it can just write out the value to the
> packed-refs file, then delete the loose ref if nobody
> has touched it since we wrote. But here we're combining
> it with a modification, so I suspect there would be a
> race with another process trying to modify it.

Yeah, I thought about that.  Could you just right the new 
packed-ref file with the new refs and the old refs which 
were in the file already, then just delete any loose refs 
which were ones which were just added by this operation, 
only if they have not changed?

This way, if someone else modifies one of the same refs, 
they could just win?


Employee of Qualcomm Innovation Center, Inc. which is a 
member of Code Aurora Forum
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at

[Newbies FAQ]     [Linux Kernel Development]     [Free Online Dating]     [Gcc Help]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [V4L]     [Bugtraq]     [Free Online Dating]     [Photo]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]     [Fedora Users]     [Linux Resources]

Add to Google