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authorShaohua Li <shli@fb.com>2016-03-09 10:08:38 -0800
committerShaohua Li <shli@fb.com>2016-03-09 10:08:38 -0800
commitfb3229d5cd4c8e65178afe55f6727ff645cdb81a (patch)
tree09fd0c031eca1c3d9976bdb423cc6569389eb533 /drivers/md/raid5.c
parent550da24f8d62fe81f3c13e3ec27602d6e44d43dc (diff)
downloadlinux-fb3229d5cd4c8e65178afe55f6727ff645cdb81a.tar.bz2
md/raid5: output stripe state for debug
Neil recently fixed an obscure race in break_stripe_batch_list. Debug would be quite convenient if we know the stripe state. This is what this patch does. Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 32d52878f182..31ac0f0bf86f 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4236,7 +4236,7 @@ static void break_stripe_batch_list(struct stripe_head *head_sh,
list_del_init(&sh->batch_list);
- WARN_ON_ONCE(sh->state & ((1 << STRIPE_ACTIVE) |
+ WARN_ONCE(sh->state & ((1 << STRIPE_ACTIVE) |
(1 << STRIPE_SYNCING) |
(1 << STRIPE_REPLACED) |
(1 << STRIPE_DELAYED) |
@@ -4248,9 +4248,11 @@ static void break_stripe_batch_list(struct stripe_head *head_sh,
(1 << STRIPE_DISCARD) |
(1 << STRIPE_BATCH_READY) |
(1 << STRIPE_BATCH_ERR) |
- (1 << STRIPE_BITMAP_PENDING)));
- WARN_ON_ONCE(head_sh->state & ((1 << STRIPE_DISCARD) |
- (1 << STRIPE_REPLACED)));
+ (1 << STRIPE_BITMAP_PENDING)),
+ "stripe state: %lx\n", sh->state);
+ WARN_ONCE(head_sh->state & ((1 << STRIPE_DISCARD) |
+ (1 << STRIPE_REPLACED)),
+ "head stripe state: %lx\n", head_sh->state);
set_mask_bits(&sh->state, ~(STRIPE_EXPAND_SYNC_FLAGS |
(1 << STRIPE_PREREAD_ACTIVE) |