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-rw-r--r--drivers/md/dm-raid.c8
-rw-r--r--drivers/md/linear.c9
-rw-r--r--drivers/md/md.c22
-rw-r--r--drivers/md/md.h3
-rw-r--r--drivers/md/multipath.c10
-rw-r--r--drivers/md/raid0.c9
-rw-r--r--drivers/md/raid1.c14
-rw-r--r--drivers/md/raid1.h3
-rw-r--r--drivers/md/raid10.c14
-rw-r--r--drivers/md/raid10.h3
-rw-r--r--drivers/md/raid5.c19
-rw-r--r--drivers/md/raid5.h1
12 files changed, 38 insertions, 77 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 07c0fa0..777d9ba 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -746,13 +746,7 @@ static int raid_is_congested(struct dm_target_callbacks *cb, int bits)
{
struct raid_set *rs = container_of(cb, struct raid_set, callbacks);
- if (rs->raid_type->level == 1)
- return md_raid1_congested(&rs->md, bits);
-
- if (rs->raid_type->level == 10)
- return md_raid10_congested(&rs->md, bits);
-
- return md_raid5_congested(&rs->md, bits);
+ return mddev_congested(&rs->md, bits);
}
/*
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 64713b7..0510851 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -97,15 +97,11 @@ static int linear_mergeable_bvec(struct request_queue *q,
return maxsectors << 9;
}
-static int linear_congested(void *data, int bits)
+static int linear_congested(struct mddev *mddev, int bits)
{
- struct mddev *mddev = data;
struct linear_conf *conf;
int i, ret = 0;
- if (mddev_congested(mddev, bits))
- return 1;
-
rcu_read_lock();
conf = rcu_dereference(mddev->private);
@@ -218,8 +214,6 @@ static int linear_run (struct mddev *mddev)
md_set_array_sectors(mddev, linear_size(mddev, 0, 0));
blk_queue_merge_bvec(mddev->queue, linear_mergeable_bvec);
- mddev->queue->backing_dev_info.congested_fn = linear_congested;
- mddev->queue->backing_dev_info.congested_data = mddev;
ret = md_integrity_register(mddev);
if (ret) {
@@ -366,6 +360,7 @@ static struct md_personality linear_personality =
.status = linear_status,
.hot_add_disk = linear_add,
.size = linear_size,
+ .congested = linear_congested,
};
static int __init linear_init (void)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 17e7fd7..d45f52e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -321,9 +321,23 @@ EXPORT_SYMBOL_GPL(mddev_resume);
int mddev_congested(struct mddev *mddev, int bits)
{
- return mddev->suspended;
+ struct md_personality *pers = mddev->pers;
+ int ret = 0;
+
+ rcu_read_lock();
+ if (mddev->suspended)
+ ret = 1;
+ else if (pers && pers->congested)
+ ret = pers->congested(mddev, bits);
+ rcu_read_unlock();
+ return ret;
+}
+EXPORT_SYMBOL_GPL(mddev_congested);
+static int md_congested(void *data, int bits)
+{
+ struct mddev *mddev = data;
+ return mddev_congested(mddev, bits);
}
-EXPORT_SYMBOL(mddev_congested);
/*
* Generic flush handling for md
@@ -4908,6 +4922,10 @@ int md_run(struct mddev *mddev)
bitmap_destroy(mddev);
return err;
}
+ if (mddev->queue) {
+ mddev->queue->backing_dev_info.congested_data = mddev;
+ mddev->queue->backing_dev_info.congested_fn = md_congested;
+ }
if (mddev->pers->sync_request) {
if (mddev->kobj.sd &&
sysfs_create_group(&mddev->kobj, &md_redundancy_group))
diff --git a/drivers/md/md.h b/drivers/md/md.h
index f0d15bd..f260228 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -496,6 +496,9 @@ struct md_personality
* array.
*/
void *(*takeover) (struct mddev *mddev);
+ /* congested implements bdi.congested_fn().
+ * Will not be called while array is 'suspended' */
+ int (*congested)(struct mddev *mddev, int bits);
};
struct md_sysfs_entry {
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 399272f..fedb1b3 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -153,15 +153,11 @@ static void multipath_status (struct seq_file *seq, struct mddev *mddev)
seq_printf (seq, "]");
}
-static int multipath_congested(void *data, int bits)
+static int multipath_congested(struct mddev *mddev, int bits)
{
- struct mddev *mddev = data;
struct mpconf *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++) {
struct md_rdev *rdev = rcu_dereference(conf->multipaths[i].rdev);
@@ -489,9 +485,6 @@ static int multipath_run (struct mddev *mddev)
*/
md_set_array_sectors(mddev, multipath_size(mddev, 0, 0));
- mddev->queue->backing_dev_info.congested_fn = multipath_congested;
- mddev->queue->backing_dev_info.congested_data = mddev;
-
if (md_integrity_register(mddev))
goto out_free_conf;
@@ -533,6 +526,7 @@ static struct md_personality multipath_personality =
.hot_add_disk = multipath_add_disk,
.hot_remove_disk= multipath_remove_disk,
.size = multipath_size,
+ .congested = multipath_congested,
};
static int __init multipath_init (void)
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index ba6b85d..4b521ea 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -25,17 +25,13 @@
#include "raid0.h"
#include "raid5.h"
-static int raid0_congested(void *data, int bits)
+static int raid0_congested(struct mddev *mddev, int bits)
{
- struct mddev *mddev = data;
struct r0conf *conf = mddev->private;
struct md_rdev **devlist = conf->devlist;
int raid_disks = conf->strip_zone[0].nb_dev;
int i, ret = 0;
- if (mddev_congested(mddev, bits))
- return 1;
-
for (i = 0; i < raid_disks && !ret ; i++) {
struct request_queue *q = bdev_get_queue(devlist[i]->bdev);
@@ -263,8 +259,6 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
mdname(mddev),
(unsigned long long)smallest->sectors);
}
- mddev->queue->backing_dev_info.congested_fn = raid0_congested;
- mddev->queue->backing_dev_info.congested_data = mddev;
/*
* now since we have the hard sector sizes, we can make sure
@@ -729,6 +723,7 @@ static struct md_personality raid0_personality=
.size = raid0_size,
.takeover = raid0_takeover,
.quiesce = raid0_quiesce,
+ .congested = raid0_congested,
};
static int __init raid0_init (void)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 40b35be..9ad7ce7 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -734,7 +734,7 @@ static int raid1_mergeable_bvec(struct request_queue *q,
}
-int md_raid1_congested(struct mddev *mddev, int bits)
+static int raid1_congested(struct mddev *mddev, int bits)
{
struct r1conf *conf = mddev->private;
int i, ret = 0;
@@ -763,15 +763,6 @@ int md_raid1_congested(struct mddev *mddev, int bits)
rcu_read_unlock();
return ret;
}
-EXPORT_SYMBOL_GPL(md_raid1_congested);
-
-static int raid1_congested(void *data, int bits)
-{
- struct mddev *mddev = data;
-
- return mddev_congested(mddev, bits) ||
- md_raid1_congested(mddev, bits);
-}
static void flush_pending_writes(struct r1conf *conf)
{
@@ -2955,8 +2946,6 @@ static int run(struct mddev *mddev)
md_set_array_sectors(mddev, raid1_size(mddev, 0, 0));
if (mddev->queue) {
- mddev->queue->backing_dev_info.congested_fn = raid1_congested;
- mddev->queue->backing_dev_info.congested_data = mddev;
blk_queue_merge_bvec(mddev->queue, raid1_mergeable_bvec);
if (discard_supported)
@@ -3193,6 +3182,7 @@ static struct md_personality raid1_personality =
.check_reshape = raid1_reshape,
.quiesce = raid1_quiesce,
.takeover = raid1_takeover,
+ .congested = raid1_congested,
};
static int __init raid_init(void)
diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h
index 33bda55..14ebb28 100644
--- a/drivers/md/raid1.h
+++ b/drivers/md/raid1.h
@@ -170,7 +170,4 @@ struct r1bio {
*/
#define R1BIO_MadeGood 7
#define R1BIO_WriteError 8
-
-extern int md_raid1_congested(struct mddev *mddev, int bits);
-
#endif
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 32e282f..fb6b886 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -910,7 +910,7 @@ retry:
return rdev;
}
-int md_raid10_congested(struct mddev *mddev, int bits)
+static int raid10_congested(struct mddev *mddev, int bits)
{
struct r10conf *conf = mddev->private;
int i, ret = 0;
@@ -934,15 +934,6 @@ int md_raid10_congested(struct mddev *mddev, int bits)
rcu_read_unlock();
return ret;
}
-EXPORT_SYMBOL_GPL(md_raid10_congested);
-
-static int raid10_congested(void *data, int bits)
-{
- struct mddev *mddev = data;
-
- return mddev_congested(mddev, bits) ||
- md_raid10_congested(mddev, bits);
-}
static void flush_pending_writes(struct r10conf *conf)
{
@@ -3757,8 +3748,6 @@ static int run(struct mddev *mddev)
if (mddev->queue) {
int stripe = conf->geo.raid_disks *
((mddev->chunk_sectors << 9) / PAGE_SIZE);
- mddev->queue->backing_dev_info.congested_fn = raid10_congested;
- mddev->queue->backing_dev_info.congested_data = mddev;
/* Calculate max read-ahead size.
* We need to readahead at least twice a whole stripe....
@@ -4727,6 +4716,7 @@ static struct md_personality raid10_personality =
.check_reshape = raid10_check_reshape,
.start_reshape = raid10_start_reshape,
.finish_reshape = raid10_finish_reshape,
+ .congested = raid10_congested,
};
static int __init raid_init(void)
diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h
index 157d69e..5ee6473 100644
--- a/drivers/md/raid10.h
+++ b/drivers/md/raid10.h
@@ -150,7 +150,4 @@ enum r10bio_state {
*/
R10BIO_Previous,
};
-
-extern int md_raid10_congested(struct mddev *mddev, int bits);
-
#endif
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index a03cf2d..502a908 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4149,7 +4149,7 @@ static void activate_bit_delay(struct r5conf *conf,
}
}
-int md_raid5_congested(struct mddev *mddev, int bits)
+static int raid5_congested(struct mddev *mddev, int bits)
{
struct r5conf *conf = mddev->private;
@@ -4166,15 +4166,6 @@ int md_raid5_congested(struct mddev *mddev, int bits)
return 0;
}
-EXPORT_SYMBOL_GPL(md_raid5_congested);
-
-static int raid5_congested(void *data, int bits)
-{
- struct mddev *mddev = data;
-
- return mddev_congested(mddev, bits) ||
- md_raid5_congested(mddev, bits);
-}
/* We want read requests to align with chunks where possible,
* but write requests don't need to.
@@ -6248,9 +6239,6 @@ static int run(struct mddev *mddev)
blk_queue_merge_bvec(mddev->queue, raid5_mergeable_bvec);
- mddev->queue->backing_dev_info.congested_data = mddev;
- mddev->queue->backing_dev_info.congested_fn = raid5_congested;
-
chunk_size = mddev->chunk_sectors << 9;
blk_queue_io_min(mddev->queue, chunk_size);
blk_queue_io_opt(mddev->queue, chunk_size *
@@ -6333,8 +6321,6 @@ static int stop(struct mddev *mddev)
struct r5conf *conf = mddev->private;
md_unregister_thread(&mddev->thread);
- if (mddev->queue)
- mddev->queue->backing_dev_info.congested_fn = NULL;
free_conf(conf);
mddev->private = NULL;
mddev->to_remove = &raid5_attrs_group;
@@ -7126,6 +7112,7 @@ static struct md_personality raid6_personality =
.finish_reshape = raid5_finish_reshape,
.quiesce = raid5_quiesce,
.takeover = raid6_takeover,
+ .congested = raid5_congested,
};
static struct md_personality raid5_personality =
{
@@ -7148,6 +7135,7 @@ static struct md_personality raid5_personality =
.finish_reshape = raid5_finish_reshape,
.quiesce = raid5_quiesce,
.takeover = raid5_takeover,
+ .congested = raid5_congested,
};
static struct md_personality raid4_personality =
@@ -7171,6 +7159,7 @@ static struct md_personality raid4_personality =
.finish_reshape = raid5_finish_reshape,
.quiesce = raid5_quiesce,
.takeover = raid4_takeover,
+ .congested = raid5_congested,
};
static int __init raid5_init(void)
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index d59f5ca..983e18a 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -558,7 +558,6 @@ static inline int algorithm_is_DDF(int layout)
return layout >= 8 && layout <= 10;
}
-extern int md_raid5_congested(struct mddev *mddev, int bits);
extern void md_raid5_kick_device(struct r5conf *conf);
extern int raid5_set_cache_size(struct mddev *mddev, int size);
#endif
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