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authorNeilBrown <neilb@suse.de>2015-05-21 12:56:41 +1000
committerNeilBrown <neilb@suse.de>2015-05-28 11:47:02 +1000
commit787b76fa37159050f6d26aebfa6210009baed93b (patch)
tree9e54ff777051ffa494d7e34349c8a079be5052c4 /drivers/md/raid5.c
parent1b956f7a8f9aa63ea9644ab8c3374cf381993363 (diff)
downloadop-kernel-dev-787b76fa37159050f6d26aebfa6210009baed93b.zip
op-kernel-dev-787b76fa37159050f6d26aebfa6210009baed93b.tar.gz
md/raid5: call break_stripe_batch_list from handle_stripe_clean_event
Now that the code in break_stripe_batch_list() is nearly identical to the end of handle_stripe_clean_event, replace the later with a function call. The only remaining difference of any interest is the masking that is applieds to dev[i].flags copied from head_sh. R5_WriteError certainly isn't wanted as it is set per-stripe, not per-patch. R5_Overlap isn't wanted as it is explicitly handled. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c61
1 files changed, 4 insertions, 57 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 1141b7f..3254504 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3420,6 +3420,8 @@ static void handle_stripe_fill(struct stripe_head *sh,
set_bit(STRIPE_HANDLE, &sh->state);
}
+static void break_stripe_batch_list(struct stripe_head *head_sh,
+ unsigned long handle_flags);
/* handle_stripe_clean_event
* any written block on an uptodate or failed drive can be returned.
* Note that if we 'wrote' to a failed drive, it will be UPTODATE, but
@@ -3433,7 +3435,6 @@ static void handle_stripe_clean_event(struct r5conf *conf,
int discard_pending = 0;
struct stripe_head *head_sh = sh;
bool do_endio = false;
- int wakeup_nr = 0;
for (i = disks; i--; )
if (sh->dev[i].written) {
@@ -3522,62 +3523,8 @@ unhash:
if (atomic_dec_and_test(&conf->pending_full_writes))
md_wakeup_thread(conf->mddev->thread);
- if (!head_sh->batch_head || !do_endio)
- return;
- for (i = 0; i < head_sh->disks; i++) {
- if (test_and_clear_bit(R5_Overlap, &head_sh->dev[i].flags))
- wakeup_nr++;
- }
- while (!list_empty(&head_sh->batch_list)) {
- int i;
- sh = list_first_entry(&head_sh->batch_list,
- struct stripe_head, batch_list);
- list_del_init(&sh->batch_list);
-
- WARN_ON_ONCE(sh->state & ((1 << STRIPE_ACTIVE) |
- (1 << STRIPE_SYNCING) |
- (1 << STRIPE_REPLACED) |
- (1 << STRIPE_PREREAD_ACTIVE) |
- (1 << STRIPE_DELAYED) |
- (1 << STRIPE_BIT_DELAY) |
- (1 << STRIPE_FULL_WRITE) |
- (1 << STRIPE_BIOFILL_RUN) |
- (1 << STRIPE_COMPUTE_RUN) |
- (1 << STRIPE_OPS_REQ_PENDING) |
- (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)));
-
- set_mask_bits(&sh->state, ~(STRIPE_EXPAND_SYNC_FLAGS |
- (1 << STRIPE_DEGRADED)),
- head_sh->state & (1 << STRIPE_INSYNC));
-
- sh->check_state = head_sh->check_state;
- sh->reconstruct_state = head_sh->reconstruct_state;
- for (i = 0; i < sh->disks; i++) {
- if (test_and_clear_bit(R5_Overlap, &sh->dev[i].flags))
- wakeup_nr++;
- sh->dev[i].flags = head_sh->dev[i].flags;
- }
-
- spin_lock_irq(&sh->stripe_lock);
- sh->batch_head = NULL;
- spin_unlock_irq(&sh->stripe_lock);
- if (sh->state & STRIPE_EXPAND_SYNC_FLAGS)
- set_bit(STRIPE_HANDLE, &sh->state);
- release_stripe(sh);
- }
-
- spin_lock_irq(&head_sh->stripe_lock);
- head_sh->batch_head = NULL;
- spin_unlock_irq(&head_sh->stripe_lock);
- if (wakeup_nr)
- wake_up(&conf->wait_for_overlap);
- if (head_sh->state & STRIPE_EXPAND_SYNC_FLAGS)
- set_bit(STRIPE_HANDLE, &head_sh->state);
+ if (head_sh->batch_head && do_endio)
+ break_stripe_batch_list(head_sh, STRIPE_EXPAND_SYNC_FLAGS);
}
static void handle_stripe_dirtying(struct r5conf *conf,
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