Messages in this thread | | | Subject | Re: [PATCH-v2 2/9] target/pr: Use atomic bitop for se_dev_entry->pr_reg reservation check | From | "Nicholas A. Bellinger" <> | Date | Fri, 22 May 2015 02:05:57 -0700 |
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On Fri, 2015-05-22 at 10:26 +0200, Christoph Hellwig wrote: > On Fri, May 22, 2015 at 06:11:04AM +0000, Nicholas A. Bellinger wrote: > > + clear_bit(1, &orig->pr_reg); > > Can you call it ->flags and give the bit a meaningful name?
The bit is signaling if se_dev_entry has a PR registration active.
I don't see how ->flags is a more meaningful name without other bits defined.
> > > diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c > > index c0b593a..d29b39c 100644 > > --- a/drivers/target/target_core_pr.c > > +++ b/drivers/target/target_core_pr.c > > @@ -327,9 +327,13 @@ static int core_scsi3_pr_seq_non_holder( > > int we = 0; /* Write Exclusive */ > > int legacy = 0; /* Act like a legacy device and return > > * RESERVATION CONFLICT on some CDBs */ > > + bool registered = false; > > > > rcu_read_lock(); > > se_deve = target_nacl_find_deve(nacl, cmd->orig_fe_lun); > > + if (se_deve) > > + registered = test_bit(1, &se_deve->pr_reg); > > + rcu_read_unlock(); > > It would be good to just sort out the registered and co variables > here before the RCU changes, as in: > > http://git.infradead.org/users/hch/scsi.git/commitdiff/6372d9f62c83acb30d051387c40deb4dbdcaa376
Why not just keep this patch squashed into the relevant commit in the context of the larger RCU conversion..?
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