diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/linear.c | 3 | ||||
| -rw-r--r-- | drivers/md/md.c | 6 | ||||
| -rw-r--r-- | drivers/md/md.h | 1 | ||||
| -rw-r--r-- | drivers/md/multipath.c | 3 | ||||
| -rw-r--r-- | drivers/md/raid0.c | 3 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 3 | ||||
| -rw-r--r-- | drivers/md/raid10.c | 2 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 3 |
8 files changed, 24 insertions, 0 deletions
diff --git a/drivers/md/linear.c b/drivers/md/linear.c index ea4842905444..1ceceb334d5e 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -108,6 +108,9 @@ static int linear_congested(void *data, int bits) linear_conf_t *conf; int i, ret = 0; + if (mddev_congested(mddev, bits)) + return 1; + rcu_read_lock(); conf = rcu_dereference(mddev->private); diff --git a/drivers/md/md.c b/drivers/md/md.c index a3dd3c8ea681..26ba42a79129 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -262,6 +262,12 @@ static void mddev_resume(mddev_t *mddev) mddev->pers->quiesce(mddev, 0); } +int mddev_congested(mddev_t *mddev, int bits) +{ + return mddev->suspended; +} +EXPORT_SYMBOL(mddev_congested); + static inline mddev_t *mddev_get(mddev_t *mddev) { diff --git a/drivers/md/md.h b/drivers/md/md.h index f55d2ff95133..f184b69ef337 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -430,6 +430,7 @@ extern void md_write_end(mddev_t *mddev); extern void md_done_sync(mddev_t *mddev, int blocks, int ok); extern void md_error(mddev_t *mddev, mdk_rdev_t *rdev); +extern int mddev_congested(mddev_t *mddev, int bits); extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, sector_t sector, int size, struct page *page); extern void md_super_wait(mddev_t *mddev); diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 94c21c11b9bc..dcbf9d35928b 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -199,6 +199,9 @@ static int multipath_congested(void *data, int bits) multipath_conf_t *conf = mddev->private; int i, ret = 0; + if (mddev_congested(mddev, bits)) + return 1; + rcu_read_lock(); for (i = 0; i < mddev->raid_disks ; i++) { mdk_rdev_t *rdev = rcu_dereference(conf->multipaths[i].rdev); diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 68a4d129206e..d3a4ce06015a 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -44,6 +44,9 @@ static int raid0_congested(void *data, int bits) mdk_rdev_t **devlist = conf->devlist; int i, ret = 0; + if (mddev_congested(mddev, bits)) + return 1; + for (i = 0; i < mddev->raid_disks && !ret ; i++) { struct request_queue *q = bdev_get_queue(devlist[i]->bdev); diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 7efdeb44097f..a1eb4e13a112 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -576,6 +576,9 @@ static int raid1_congested(void *data, int bits) conf_t *conf = mddev->private; int i, ret = 0; + if (mddev_congested(mddev, bits)) + return 1; + rcu_read_lock(); for (i = 0; i < mddev->raid_disks; i++) { mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 7872968fdfcc..191f42efecc2 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -631,6 +631,8 @@ static int raid10_congested(void *data, int bits) conf_t *conf = mddev->private; int i, ret = 0; + if (mddev_congested(mddev, bits)) + return 1; rcu_read_lock(); for (i = 0; i < mddev->raid_disks && ret == 0; i++) { mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev); diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index bee3573ed1bd..9db84c98a41d 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3332,6 +3332,9 @@ static int raid5_congested(void *data, int bits) /* No difference between reads and writes. Just check * how busy the stripe_cache is */ + + if (mddev_congested(mddev, bits)) + return 1; if (conf->inactive_blocked) return 1; if (conf->quiesce) |