diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/raid5.c | 54 | ||||
| -rw-r--r-- | drivers/md/raid5.h | 6 |
2 files changed, 29 insertions, 31 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index bbc7792..bc15f48 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3003,12 +3003,9 @@ static void handle_stripe5(struct stripe_head *sh) { raid5_conf_t *conf = sh->raid_conf; int disks = sh->disks, i; - struct bio *return_bi = NULL; struct stripe_head_state s; struct r5dev *dev; - mdk_rdev_t *blocked_rdev = NULL; int prexor; - int dec_preread_active = 0; memset(&s, 0, sizeof(s)); pr_debug("handling stripe %llu, state=%#lx cnt=%d, pd_idx=%d check:%d " @@ -3058,9 +3055,9 @@ static void handle_stripe5(struct stripe_head *sh) if (dev->written) s.written++; rdev = rcu_dereference(conf->disks[i].rdev); - if (blocked_rdev == NULL && + if (s.blocked_rdev == NULL && rdev && unlikely(test_bit(Blocked, &rdev->flags))) { - blocked_rdev = rdev; + s.blocked_rdev = rdev; atomic_inc(&rdev->nr_pending); } clear_bit(R5_Insync, &dev->flags); @@ -3088,15 +3085,15 @@ static void handle_stripe5(struct stripe_head *sh) spin_unlock_irq(&conf->device_lock); rcu_read_unlock(); - if (unlikely(blocked_rdev)) { + if (unlikely(s.blocked_rdev)) { if (s.syncing || s.expanding || s.expanded || s.to_write || s.written) { set_bit(STRIPE_HANDLE, &sh->state); goto unlock; } /* There is nothing for the blocked_rdev to block */ - rdev_dec_pending(blocked_rdev, conf->mddev); - blocked_rdev = NULL; + rdev_dec_pending(s.blocked_rdev, conf->mddev); + s.blocked_rdev = NULL; } if (s.to_fill && !test_bit(STRIPE_BIOFILL_RUN, &sh->state)) { @@ -3112,7 +3109,7 @@ static void handle_stripe5(struct stripe_head *sh) * need to be failed */ if (s.failed > 1 && s.to_read+s.to_write+s.written) - handle_failed_stripe(conf, sh, &s, disks, &return_bi); + handle_failed_stripe(conf, sh, &s, disks, &s.return_bi); if (s.failed > 1 && s.syncing) { md_done_sync(conf->mddev, STRIPE_SECTORS,0); clear_bit(STRIPE_SYNCING, &sh->state); @@ -3128,7 +3125,7 @@ static void handle_stripe5(struct stripe_head *sh) !test_bit(R5_LOCKED, &dev->flags) && test_bit(R5_UPTODATE, &dev->flags)) || (s.failed == 1 && s.failed_num[0] == sh->pd_idx))) - handle_stripe_clean_event(conf, sh, disks, &return_bi); + handle_stripe_clean_event(conf, sh, disks, &s.return_bi); /* Now we might consider reading some blocks, either to check/generate * parity, or to satisfy requests @@ -3166,7 +3163,7 @@ static void handle_stripe5(struct stripe_head *sh) } } if (test_and_clear_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) - dec_preread_active = 1; + s.dec_preread_active = 1; } /* Now to consider new write requests and what else, if anything @@ -3264,15 +3261,15 @@ static void handle_stripe5(struct stripe_head *sh) unlock: /* wait for this device to become unblocked */ - if (unlikely(blocked_rdev)) - md_wait_for_blocked_rdev(blocked_rdev, conf->mddev); + if (unlikely(s.blocked_rdev)) + md_wait_for_blocked_rdev(s.blocked_rdev, conf->mddev); if (s.ops_request) raid_run_ops(sh, s.ops_request); ops_run_io(sh, &s); - if (dec_preread_active) { + if (s.dec_preread_active) { /* We delay this until after ops_run_io so that if make_request * is waiting on a flush, it won't continue until the writes * have actually been submitted. @@ -3282,19 +3279,16 @@ static void handle_stripe5(struct stripe_head *sh) IO_THRESHOLD) md_wakeup_thread(conf->mddev->thread); } - return_io(return_bi); + return_io(s.return_bi); } static void handle_stripe6(struct stripe_head *sh) { raid5_conf_t *conf = sh->raid_conf; int disks = sh->disks; - struct bio *return_bi = NULL; int i, pd_idx = sh->pd_idx, qd_idx = sh->qd_idx; struct stripe_head_state s; struct r5dev *dev, *pdev, *qdev; - mdk_rdev_t *blocked_rdev = NULL; - int dec_preread_active = 0; pr_debug("handling stripe %llu, state=%#lx cnt=%d, " "pd_idx=%d, qd_idx=%d\n, check:%d, reconstruct:%d\n", @@ -3345,9 +3339,9 @@ static void handle_stripe6(struct stripe_head *sh) if (dev->written) s.written++; rdev = rcu_dereference(conf->disks[i].rdev); - if (blocked_rdev == NULL && + if (s.blocked_rdev == NULL && rdev && unlikely(test_bit(Blocked, &rdev->flags))) { - blocked_rdev = rdev; + s.blocked_rdev = rdev; atomic_inc(&rdev->nr_pending); } clear_bit(R5_Insync, &dev->flags); @@ -3376,15 +3370,15 @@ static void handle_stripe6(struct stripe_head *sh) spin_unlock_irq(&conf->device_lock); rcu_read_unlock(); - if (unlikely(blocked_rdev)) { + if (unlikely(s.blocked_rdev)) { if (s.syncing || s.expanding || s.expanded || s.to_write || s.written) { set_bit(STRIPE_HANDLE, &sh->state); goto unlock; } /* There is nothing for the blocked_rdev to block */ - rdev_dec_pending(blocked_rdev, conf->mddev); - blocked_rdev = NULL; + rdev_dec_pending(s.blocked_rdev, conf->mddev); + s.blocked_rdev = NULL; } if (s.to_fill && !test_bit(STRIPE_BIOFILL_RUN, &sh->state)) { @@ -3400,7 +3394,7 @@ static void handle_stripe6(struct stripe_head *sh) * might need to be failed */ if (s.failed > 2 && s.to_read+s.to_write+s.written) - handle_failed_stripe(conf, sh, &s, disks, &return_bi); + handle_failed_stripe(conf, sh, &s, disks, &s.return_bi); if (s.failed > 2 && s.syncing) { md_done_sync(conf->mddev, STRIPE_SECTORS,0); clear_bit(STRIPE_SYNCING, &sh->state); @@ -3425,7 +3419,7 @@ static void handle_stripe6(struct stripe_head *sh) (s.q_failed || ((test_bit(R5_Insync, &qdev->flags) && !test_bit(R5_LOCKED, &qdev->flags) && test_bit(R5_UPTODATE, &qdev->flags))))) - handle_stripe_clean_event(conf, sh, disks, &return_bi); + handle_stripe_clean_event(conf, sh, disks, &s.return_bi); /* Now we might consider reading some blocks, either to check/generate * parity, or to satisfy requests @@ -3461,7 +3455,7 @@ static void handle_stripe6(struct stripe_head *sh) } } if (test_and_clear_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) - dec_preread_active = 1; + s.dec_preread_active = 1; } /* Now to consider new write requests and what else, if anything @@ -3561,8 +3555,8 @@ static void handle_stripe6(struct stripe_head *sh) unlock: /* wait for this device to become unblocked */ - if (unlikely(blocked_rdev)) - md_wait_for_blocked_rdev(blocked_rdev, conf->mddev); + if (unlikely(s.blocked_rdev)) + md_wait_for_blocked_rdev(s.blocked_rdev, conf->mddev); if (s.ops_request) raid_run_ops(sh, s.ops_request); @@ -3570,7 +3564,7 @@ static void handle_stripe6(struct stripe_head *sh) ops_run_io(sh, &s); - if (dec_preread_active) { + if (s.dec_preread_active) { /* We delay this until after ops_run_io so that if make_request * is waiting on a flush, it won't continue until the writes * have actually been submitted. @@ -3581,7 +3575,7 @@ static void handle_stripe6(struct stripe_head *sh) md_wakeup_thread(conf->mddev->thread); } - return_io(return_bi); + return_io(s.return_bi); } static void handle_stripe(struct stripe_head *sh) diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index 05ac5cd..68c500a 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -243,8 +243,12 @@ struct stripe_head_state { int locked, uptodate, to_read, to_write, failed, written; int to_fill, compute, req_compute, non_overwrite; int failed_num[2]; - unsigned long ops_request; int p_failed, q_failed; + int dec_preread_active; + unsigned long ops_request; + + struct bio *return_bi; + mdk_rdev_t *blocked_rdev; }; /* Flags */ |