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Merge branch 'for-linus' of git://neil.brown.name/md 

* 'for-linus' of git://neil.brown.name/md:
  md: raid10: wake up frozen array
  md: do not count blocked devices as spares
  md: do not progress the resync process if the stripe was blocked
  md: delay notification of 'active_idle' to the recovery thread
  md: fix merge error
  md: move async_tx_issue_pending_all outside spin_lock_irq
This commit is contained in:
Linus Torvalds 2008-08-01 11:56:07 -07:00
parent 63a16f9016 388667bed5
commit 1e24b15b26
4 changed files with 28 additions and 13 deletions
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8
drivers/md/md.c
View File

@ -3483,7 +3483,7 @@ static void md_safemode_timeout(unsigned long data)
if (!atomic_read(&mddev->writes_pending)) {
mddev->safemode = 1;
if (mddev->external)
sysfs_notify(&mddev->kobj, NULL, "array_state");
set_bit(MD_NOTIFY_ARRAY_STATE, &mddev->flags);
}
md_wakeup_thread(mddev->thread);
}
@ -5996,7 +5996,8 @@ static int remove_and_add_spares(mddev_t *mddev)
if (mddev->degraded) {
rdev_for_each(rdev, rtmp, mddev) {
if (rdev->raid_disk >= 0 &&
!test_bit(In_sync, &rdev->flags))
!test_bit(In_sync, &rdev->flags) &&
!test_bit(Blocked, &rdev->flags))
spares++;
if (rdev->raid_disk < 0
&& !test_bit(Faulty, &rdev->flags)) {
@ -6051,6 +6052,9 @@ void md_check_recovery(mddev_t *mddev)
if (mddev->bitmap)
bitmap_daemon_work(mddev->bitmap);
if (test_and_clear_bit(MD_NOTIFY_ARRAY_STATE, &mddev->flags))
sysfs_notify(&mddev->kobj, NULL, "array_state");
if (mddev->ro)
return;

3
drivers/md/raid10.c
View File

@ -215,6 +215,9 @@ static void reschedule_retry(r10bio_t *r10_bio)
conf->nr_queued ++;
spin_unlock_irqrestore(&conf->device_lock, flags);
/* wake up frozen array... */
wake_up(&conf->wait_barrier);
md_wakeup_thread(mddev->thread);
}

29
drivers/md/raid5.c
View File

@ -2507,7 +2507,7 @@ static void handle_stripe_expansion(raid5_conf_t *conf, struct stripe_head *sh,
*
*/
static void handle_stripe5(struct stripe_head *sh)
static bool handle_stripe5(struct stripe_head *sh)
{
raid5_conf_t *conf = sh->raid_conf;
int disks = sh->disks, i;
@ -2717,10 +2717,11 @@ static void handle_stripe5(struct stripe_head *sh)
if (sh->reconstruct_state == reconstruct_state_result) {
sh->reconstruct_state = reconstruct_state_idle;
clear_bit(STRIPE_EXPANDING, &sh->state);
for (i = conf->raid_disks; i--; )
for (i = conf->raid_disks; i--; ) {
set_bit(R5_Wantwrite, &sh->dev[i].flags);
set_bit(R5_LOCKED, &dev->flags);
set_bit(R5_LOCKED, &sh->dev[i].flags);
s.locked++;
}
}
if (s.expanded && test_bit(STRIPE_EXPANDING, &sh->state) &&
@ -2754,9 +2755,11 @@ static void handle_stripe5(struct stripe_head *sh)
ops_run_io(sh, &s);
return_io(return_bi);
return blocked_rdev == NULL;
}
static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
static bool handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
{
raid6_conf_t *conf = sh->raid_conf;
int disks = sh->disks;
@ -2967,14 +2970,17 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page)
ops_run_io(sh, &s);
return_io(return_bi);
return blocked_rdev == NULL;
}
static void handle_stripe(struct stripe_head *sh, struct page *tmp_page)
/* returns true if the stripe was handled */
static bool handle_stripe(struct stripe_head *sh, struct page *tmp_page)
{
if (sh->raid_conf->level == 6)
handle_stripe6(sh, tmp_page);
return handle_stripe6(sh, tmp_page);
else
handle_stripe5(sh);
return handle_stripe5(sh);
}
@ -3692,7 +3698,9 @@ static inline sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *ski
clear_bit(STRIPE_INSYNC, &sh->state);
spin_unlock(&sh->lock);
handle_stripe(sh, NULL);
/* wait for any blocked device to be handled */
while(unlikely(!handle_stripe(sh, NULL)))
;
release_stripe(sh);
return STRIPE_SECTORS;
@ -3811,10 +3819,8 @@ static void raid5d(mddev_t *mddev)
sh = __get_priority_stripe(conf);
if (!sh) {
async_tx_issue_pending_all();
if (!sh)
break;
}
spin_unlock_irq(&conf->device_lock);
handled++;
@ -3827,6 +3833,7 @@ static void raid5d(mddev_t *mddev)
spin_unlock_irq(&conf->device_lock);
async_tx_issue_pending_all();
unplug_slaves(mddev);
pr_debug("--- raid5d inactive\n");

1
include/linux/raid/md_k.h
View File

@ -128,6 +128,7 @@ struct mddev_s
#define MD_CHANGE_DEVS 0 /* Some device status has changed */
#define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */
#define MD_CHANGE_PENDING 2 /* superblock update in progress */
#define MD_NOTIFY_ARRAY_STATE 3 /* atomic context wants to notify userspace */
int ro;