From: Namhyung Kim <namhyung@gmail.com>
To: NeilBrown <neilb@suse.de>
Cc: linux-raid@vger.kernel.org
Subject: Re: [md PATCH 20/34] md/raid5: finalise new merged handle_stripe.
Date: Tue, 26 Jul 2011 13:50:53 +0900 [thread overview]
Message-ID: <1311655853.1522.0.camel@leonhard> (raw)
In-Reply-To: <20110726120205.1962c301@notabene.brown>
2011-07-26 (화), 12:02 +1000, NeilBrown:
> On Fri, 22 Jul 2011 18:36:13 +0900 Namhyung Kim <namhyung@gmail.com> wrote:
>
> > NeilBrown <neilb@suse.de> writes:
> >
> > > handle_stripe5() and handle_stripe6() are now virtually identical.
> > > So discard one and rename the other to 'analyse_stripe()'.
> > >
> > > It always returns 0, so change it to 'void' and remove the 'done'
> > > variable in handle_stripe().
> > >
> > > Signed-off-by: NeilBrown <neilb@suse.de>
>
>
> > > static void handle_stripe(struct stripe_head *sh)
> > > {
> > > struct stripe_head_state s;
> > > - int done;
> > > raid5_conf_t *conf = sh->raid_conf;
> > > int i;
> > > int prexor;
> > > @@ -3099,13 +3015,7 @@ static void handle_stripe(struct stripe_head *sh)
> > > s.failed_num[0] = -1;
> > > s.failed_num[1] = -1;
> >
> > There are codes that set/initialize some fields of stripe_head_state
> > outside of analyse_stripe() and it'd better off moving them into the
> > function, IMHO.
> >
> > Thanks.
>
> Thanks. I have merged this change.
>
> NeilBrown
>
>
> diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
> index ed6729d..b321d6c 100644
> --- a/drivers/md/raid5.c
> +++ b/drivers/md/raid5.c
> @@ -2905,6 +2905,14 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
> struct r5dev *dev;
> int i;
>
> + memset(s, 0, sizeof(*s));
> +
> + s->syncing = test_bit(STRIPE_SYNCING, &sh->state);
> + s->expanding = test_bit(STRIPE_EXPAND_SOURCE, &sh->state);
> + s->expanded = test_bit(STRIPE_EXPAND_READY, &sh->state);
> + s->failed_num[0] = -1;
> + s->failed_num[1] = -1;
> +
> /* Now to look around and see what can be done */
> rcu_read_lock();
> spin_lock_irq(&conf->device_lock);
> @@ -3006,13 +3014,6 @@ static void handle_stripe(struct stripe_head *sh)
> (unsigned long long)sh->sector, sh->state,
> atomic_read(&sh->count), sh->pd_idx, sh->qd_idx,
> sh->check_state, sh->reconstruct_state);
> - memset(&s, 0, sizeof(s));
> -
> - s.syncing = test_bit(STRIPE_SYNCING, &sh->state);
> - s.expanding = test_bit(STRIPE_EXPAND_SOURCE, &sh->state);
> - s.expanded = test_bit(STRIPE_EXPAND_READY, &sh->state);
> - s.failed_num[0] = -1;
> - s.failed_num[1] = -1;
>
> analyse_stripe(sh, &s);
>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>
Looks great to me, thanks.
--
Regards,
Namhyung Kim
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next prev parent reply other threads:[~2011-07-26 4:50 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-21 2:32 [md PATCH 00/34] md patches for 3.1 - part 1 NeilBrown
2011-07-21 2:32 ` [md PATCH 01/34] md/raid10: get rid of duplicated conditional expression NeilBrown
2011-07-21 2:32 ` [md PATCH 02/34] md/raid10: factor out common bio handling code NeilBrown
2011-07-21 2:32 ` [md PATCH 03/34] md/raid10: share pages between read and write bio's during recovery NeilBrown
2011-07-21 2:32 ` [md PATCH 05/34] md/raid5: get rid of duplicated call to bio_data_dir() NeilBrown
2011-07-21 2:32 ` [md PATCH 10/34] md/raid5: unify stripe_head_state and r6_state NeilBrown
2011-07-22 4:49 ` Namhyung Kim
2011-07-22 5:15 ` NeilBrown
2011-07-22 5:37 ` NeilBrown
2011-07-22 5:53 ` Namhyung Kim
2011-07-26 6:44 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 09/34] md/raid5: move common code into handle_stripe NeilBrown
2011-07-22 4:30 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 06/34] md/raid5: Remove use of sh->lock in sync_request NeilBrown
2011-07-22 3:39 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 11/34] md/raid5: add some more fields to stripe_head_state NeilBrown
2011-07-22 5:31 ` Namhyung Kim
2011-07-26 1:35 ` NeilBrown
2011-07-21 2:32 ` [md PATCH 04/34] md/raid5: use kmem_cache_zalloc() NeilBrown
2011-07-21 2:32 ` [md PATCH 07/34] md/raid5: Protect some more code with ->device_lock NeilBrown
2011-07-22 3:54 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 08/34] md/raid5: replace sh->lock with an 'active' flag NeilBrown
2011-07-22 4:27 ` Namhyung Kim
2011-07-22 4:49 ` NeilBrown
2011-07-22 5:03 ` Namhyung Kim
2011-08-03 22:47 ` Dan Williams
2011-08-03 23:35 ` NeilBrown
2011-08-03 23:45 ` Williams, Dan J
2011-08-04 0:18 ` NeilBrown
2011-07-21 2:32 ` [md PATCH 18/34] md/raid5: move more common code into handle_stripe NeilBrown
2011-07-22 9:20 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 17/34] md/raid5: unite handle_stripe_dirtying5 and handle_stripe_dirtying6 NeilBrown
2011-07-22 9:10 ` Namhyung Kim
2011-07-26 1:52 ` NeilBrown
2011-07-26 2:41 ` H. Peter Anvin
2011-07-26 9:40 ` David Brown
2011-07-26 13:23 ` Namhyung Kim
2011-07-26 15:01 ` David Brown
2011-07-21 2:32 ` [md PATCH 12/34] md/raid5: move stripe_head_state and more code into handle_stripe NeilBrown
2011-07-22 5:41 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 13/34] md/raid5: Move code for finishing a reconstruction " NeilBrown
2011-07-22 7:09 ` Namhyung Kim
2011-07-26 1:44 ` NeilBrown
2011-07-21 2:32 ` [md PATCH 19/34] md/raid5: move some more common code " NeilBrown
2011-07-22 9:29 ` Namhyung Kim
2011-07-26 1:59 ` NeilBrown
2011-07-21 2:32 ` [md PATCH 16/34] md/raid5: unite fetch_block5 and fetch_block6 NeilBrown
2011-07-22 8:24 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 14/34] md/raid5: move more code into common handle_stripe NeilBrown
2011-07-22 7:32 ` Namhyung Kim
2011-07-26 1:48 ` NeilBrown
2011-07-21 2:32 ` [md PATCH 15/34] md/raid5: rearrange a test in fetch_block6 NeilBrown
2011-07-22 7:37 ` Namhyung Kim
2011-07-21 2:32 ` [md PATCH 20/34] md/raid5: finalise new merged handle_stripe NeilBrown
2011-07-22 9:36 ` Namhyung Kim
2011-07-26 2:02 ` NeilBrown
2011-07-26 4:50 ` Namhyung Kim [this message]
2011-07-21 2:32 ` [md PATCH 25/34] md: change managed of recovery_disabled NeilBrown
2011-07-21 2:32 ` [md PATCH 22/34] md/raid: use printk_ratelimited instead of printk_ratelimit NeilBrown
2011-07-21 2:32 ` [md PATCH 24/34] md: remove ro check in md_check_recovery() NeilBrown
2011-07-21 2:32 ` [md PATCH 23/34] md: introduce link/unlink_rdev() helpers NeilBrown
2011-07-21 2:32 ` [md PATCH 27/34] md/raid10: Improve decision on whether to fail a device with a read error NeilBrown
2011-07-21 2:32 ` [md PATCH 21/34] md: use proper little-endian bitops NeilBrown
2011-07-21 2:32 ` [md PATCH 26/34] md/raid10: Make use of new recovery_disabled handling NeilBrown
2011-07-21 2:32 ` [md PATCH 32/34] md/raid5: Avoid BUG caused by multiple failures NeilBrown
2011-07-21 2:32 ` [md PATCH 33/34] MD: raid1 s/sysfs_notify_dirent/sysfs_notify_dirent_safe NeilBrown
2011-07-21 2:32 ` [md PATCH 34/34] MD bitmap: Revert DM dirty log hooks NeilBrown
2011-07-21 2:32 ` [md PATCH 31/34] md/raid10: move rdev->corrected_errors counting NeilBrown
2011-07-21 2:32 ` [md PATCH 30/34] md/raid5: " NeilBrown
2011-07-21 2:32 ` [md PATCH 29/34] md/raid1: " NeilBrown
2011-07-21 2:32 ` [md PATCH 28/34] md: get rid of unnecessary casts on page_address() NeilBrown
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