aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/md/md.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/md/md.c')
-rw-r--r--drivers/md/md.c140
1 files changed, 57 insertions, 83 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index ce88755baf4a..b572e1e386ce 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -439,7 +439,7 @@ static void submit_flushes(struct work_struct *ws)
INIT_WORK(&mddev->flush_work, md_submit_flush_data);
atomic_set(&mddev->flush_pending, 1);
rcu_read_lock();
- list_for_each_entry_rcu(rdev, &mddev->disks, same_set)
+ rdev_for_each_rcu(rdev, mddev)
if (rdev->raid_disk >= 0 &&
!test_bit(Faulty, &rdev->flags)) {
/* Take two references, one is dropped
@@ -749,7 +749,7 @@ static struct md_rdev * find_rdev_nr(struct mddev *mddev, int nr)
{
struct md_rdev *rdev;
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (rdev->desc_nr == nr)
return rdev;
@@ -760,7 +760,7 @@ static struct md_rdev * find_rdev(struct mddev * mddev, dev_t dev)
{
struct md_rdev *rdev;
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (rdev->bdev->bd_dev == dev)
return rdev;
@@ -1342,7 +1342,7 @@ static void super_90_sync(struct mddev *mddev, struct md_rdev *rdev)
sb->state |= (1<<MD_SB_BITMAP_PRESENT);
sb->disks[0].state = (1<<MD_DISK_REMOVED);
- list_for_each_entry(rdev2, &mddev->disks, same_set) {
+ rdev_for_each(rdev2, mddev) {
mdp_disk_t *d;
int desc_nr;
int is_active = test_bit(In_sync, &rdev2->flags);
@@ -1805,18 +1805,18 @@ retry:
| BB_LEN(internal_bb));
*bbp++ = cpu_to_le64(store_bb);
}
+ bb->changed = 0;
if (read_seqretry(&bb->lock, seq))
goto retry;
bb->sector = (rdev->sb_start +
(int)le32_to_cpu(sb->bblog_offset));
bb->size = le16_to_cpu(sb->bblog_size);
- bb->changed = 0;
}
}
max_dev = 0;
- list_for_each_entry(rdev2, &mddev->disks, same_set)
+ rdev_for_each(rdev2, mddev)
if (rdev2->desc_nr+1 > max_dev)
max_dev = rdev2->desc_nr+1;
@@ -1833,7 +1833,7 @@ retry:
for (i=0; i<max_dev;i++)
sb->dev_roles[i] = cpu_to_le16(0xfffe);
- list_for_each_entry(rdev2, &mddev->disks, same_set) {
+ rdev_for_each(rdev2, mddev) {
i = rdev2->desc_nr;
if (test_bit(Faulty, &rdev2->flags))
sb->dev_roles[i] = cpu_to_le16(0xfffe);
@@ -1948,7 +1948,7 @@ int md_integrity_register(struct mddev *mddev)
return 0; /* nothing to do */
if (!mddev->gendisk || blk_get_integrity(mddev->gendisk))
return 0; /* shouldn't register, or already is */
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
/* skip spares and non-functional disks */
if (test_bit(Faulty, &rdev->flags))
continue;
@@ -2175,7 +2175,7 @@ static void export_array(struct mddev *mddev)
{
struct md_rdev *rdev, *tmp;
- rdev_for_each(rdev, tmp, mddev) {
+ rdev_for_each_safe(rdev, tmp, mddev) {
if (!rdev->mddev) {
MD_BUG();
continue;
@@ -2307,11 +2307,11 @@ static void md_print_devices(void)
bitmap_print_sb(mddev->bitmap);
else
printk("%s: ", mdname(mddev));
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
printk("<%s>", bdevname(rdev->bdev,b));
printk("\n");
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
print_rdev(rdev, mddev->major_version);
}
printk("md: **********************************\n");
@@ -2328,7 +2328,7 @@ static void sync_sbs(struct mddev * mddev, int nospares)
* with the rest of the array)
*/
struct md_rdev *rdev;
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->sb_events == mddev->events ||
(nospares &&
rdev->raid_disk < 0 &&
@@ -2351,7 +2351,7 @@ static void md_update_sb(struct mddev * mddev, int force_change)
repeat:
/* First make sure individual recovery_offsets are correct */
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->raid_disk >= 0 &&
mddev->delta_disks >= 0 &&
!test_bit(In_sync, &rdev->flags) &&
@@ -2364,8 +2364,9 @@ repeat:
clear_bit(MD_CHANGE_DEVS, &mddev->flags);
if (!mddev->external) {
clear_bit(MD_CHANGE_PENDING, &mddev->flags);
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->badblocks.changed) {
+ rdev->badblocks.changed = 0;
md_ack_all_badblocks(&rdev->badblocks);
md_error(mddev, rdev);
}
@@ -2430,7 +2431,7 @@ repeat:
mddev->events --;
}
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->badblocks.changed)
any_badblocks_changed++;
if (test_bit(Faulty, &rdev->flags))
@@ -2444,7 +2445,7 @@ repeat:
mdname(mddev), mddev->in_sync);
bitmap_update_sb(mddev->bitmap);
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
char b[BDEVNAME_SIZE];
if (rdev->sb_loaded != 1)
@@ -2493,7 +2494,7 @@ repeat:
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (test_and_clear_bit(FaultRecorded, &rdev->flags))
clear_bit(Blocked, &rdev->flags);
@@ -2896,7 +2897,7 @@ rdev_size_store(struct md_rdev *rdev, const char *buf, size_t len)
struct md_rdev *rdev2;
mddev_lock(mddev);
- list_for_each_entry(rdev2, &mddev->disks, same_set)
+ rdev_for_each(rdev2, mddev)
if (rdev->bdev == rdev2->bdev &&
rdev != rdev2 &&
overlaps(rdev->data_offset, rdev->sectors,
@@ -3193,7 +3194,7 @@ static void analyze_sbs(struct mddev * mddev)
char b[BDEVNAME_SIZE];
freshest = NULL;
- rdev_for_each(rdev, tmp, mddev)
+ rdev_for_each_safe(rdev, tmp, mddev)
switch (super_types[mddev->major_version].
load_super(rdev, freshest, mddev->minor_version)) {
case 1:
@@ -3214,7 +3215,7 @@ static void analyze_sbs(struct mddev * mddev)
validate_super(mddev, freshest);
i = 0;
- rdev_for_each(rdev, tmp, mddev) {
+ rdev_for_each_safe(rdev, tmp, mddev) {
if (mddev->max_disks &&
(rdev->desc_nr >= mddev->max_disks ||
i > mddev->max_disks)) {
@@ -3403,7 +3404,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
return -EINVAL;
}
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
rdev->new_raid_disk = rdev->raid_disk;
/* ->takeover must set new_* and/or delta_disks
@@ -3456,7 +3457,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
mddev->safemode = 0;
}
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->raid_disk < 0)
continue;
if (rdev->new_raid_disk >= mddev->raid_disks)
@@ -3465,7 +3466,7 @@ level_store(struct mddev *mddev, const char *buf, size_t len)
continue;
sysfs_unlink_rdev(mddev, rdev);
}
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->raid_disk < 0)
continue;
if (rdev->new_raid_disk == rdev->raid_disk)
@@ -4796,7 +4797,7 @@ int md_run(struct mddev *mddev)
* the only valid external interface is through the md
* device.
*/
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (test_bit(Faulty, &rdev->flags))
continue;
sync_blockdev(rdev->bdev);
@@ -4867,8 +4868,8 @@ int md_run(struct mddev *mddev)
struct md_rdev *rdev2;
int warned = 0;
- list_for_each_entry(rdev, &mddev->disks, same_set)
- list_for_each_entry(rdev2, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev)
+ rdev_for_each(rdev2, mddev) {
if (rdev < rdev2 &&
rdev->bdev->bd_contains ==
rdev2->bdev->bd_contains) {
@@ -4945,7 +4946,7 @@ int md_run(struct mddev *mddev)
mddev->in_sync = 1;
smp_wmb();
mddev->ready = 1;
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (rdev->raid_disk >= 0)
if (sysfs_link_rdev(mddev, rdev))
/* failure here is OK */;
@@ -5073,6 +5074,7 @@ static void md_clean(struct mddev *mddev)
mddev->changed = 0;
mddev->degraded = 0;
mddev->safemode = 0;
+ mddev->merge_check_needed = 0;
mddev->bitmap_info.offset = 0;
mddev->bitmap_info.default_offset = 0;
mddev->bitmap_info.chunksize = 0;
@@ -5175,7 +5177,7 @@ static int do_md_stop(struct mddev * mddev, int mode, int is_open)
/* tell userspace to handle 'inactive' */
sysfs_notify_dirent_safe(mddev->sysfs_state);
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (rdev->raid_disk >= 0)
sysfs_unlink_rdev(mddev, rdev);
@@ -5226,7 +5228,7 @@ static void autorun_array(struct mddev *mddev)
printk(KERN_INFO "md: running: ");
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
char b[BDEVNAME_SIZE];
printk("<%s>", bdevname(rdev->bdev,b));
}
@@ -5356,7 +5358,7 @@ static int get_array_info(struct mddev * mddev, void __user * arg)
struct md_rdev *rdev;
nr=working=insync=failed=spare=0;
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
nr++;
if (test_bit(Faulty, &rdev->flags))
failed++;
@@ -5923,7 +5925,7 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
* grow, and re-add.
*/
return -EBUSY;
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
sector_t avail = rdev->sectors;
if (fit && (num_sectors == 0 || num_sectors > avail))
@@ -6724,7 +6726,6 @@ static int md_seq_show(struct seq_file *seq, void *v)
struct mddev *mddev = v;
sector_t sectors;
struct md_rdev *rdev;
- struct bitmap *bitmap;
if (v == (void*)1) {
struct md_personality *pers;
@@ -6758,7 +6759,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
}
sectors = 0;
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
char b[BDEVNAME_SIZE];
seq_printf(seq, " %s[%d]",
bdevname(rdev->bdev,b), rdev->desc_nr);
@@ -6812,27 +6813,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
} else
seq_printf(seq, "\n ");
- if ((bitmap = mddev->bitmap)) {
- unsigned long chunk_kb;
- unsigned long flags;
- spin_lock_irqsave(&bitmap->lock, flags);
- chunk_kb = mddev->bitmap_info.chunksize >> 10;
- seq_printf(seq, "bitmap: %lu/%lu pages [%luKB], "
- "%lu%s chunk",
- bitmap->pages - bitmap->missing_pages,
- bitmap->pages,
- (bitmap->pages - bitmap->missing_pages)
- << (PAGE_SHIFT - 10),
- chunk_kb ? chunk_kb : mddev->bitmap_info.chunksize,
- chunk_kb ? "KB" : "B");
- if (bitmap->file) {
- seq_printf(seq, ", file: ");
- seq_path(seq, &bitmap->file->f_path, " \t\n");
- }
-
- seq_printf(seq, "\n");
- spin_unlock_irqrestore(&bitmap->lock, flags);
- }
+ bitmap_status(seq, mddev->bitmap);
seq_printf(seq, "\n");
}
@@ -7170,7 +7151,7 @@ void md_do_sync(struct mddev *mddev)
max_sectors = mddev->dev_sectors;
j = MaxSector;
rcu_read_lock();
- list_for_each_entry_rcu(rdev, &mddev->disks, same_set)
+ rdev_for_each_rcu(rdev, mddev)
if (rdev->raid_disk >= 0 &&
!test_bit(Faulty, &rdev->flags) &&
!test_bit(In_sync, &rdev->flags) &&
@@ -7342,7 +7323,7 @@ void md_do_sync(struct mddev *mddev)
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery))
mddev->curr_resync = MaxSector;
rcu_read_lock();
- list_for_each_entry_rcu(rdev, &mddev->disks, same_set)
+ rdev_for_each_rcu(rdev, mddev)
if (rdev->raid_disk >= 0 &&
mddev->delta_disks >= 0 &&
!test_bit(Faulty, &rdev->flags) &&
@@ -7388,7 +7369,7 @@ static int remove_and_add_spares(struct mddev *mddev)
mddev->curr_resync_completed = 0;
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (rdev->raid_disk >= 0 &&
!test_bit(Blocked, &rdev->flags) &&
(test_bit(Faulty, &rdev->flags) ||
@@ -7406,7 +7387,7 @@ static int remove_and_add_spares(struct mddev *mddev)
"degraded");
- list_for_each_entry(rdev, &mddev->disks, same_set) {
+ rdev_for_each(rdev, mddev) {
if (rdev->raid_disk >= 0 &&
!test_bit(In_sync, &rdev->flags) &&
!test_bit(Faulty, &rdev->flags))
@@ -7451,7 +7432,7 @@ static void reap_sync_thread(struct mddev *mddev)
* do the superblock for an incrementally recovered device
* written out.
*/
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (!mddev->degraded ||
test_bit(In_sync, &rdev->flags))
rdev->saved_raid_disk = -1;
@@ -7529,7 +7510,7 @@ void md_check_recovery(struct mddev *mddev)
* failed devices.
*/
struct md_rdev *rdev;
- list_for_each_entry(rdev, &mddev->disks, same_set)
+ rdev_for_each(rdev, mddev)
if (rdev->raid_disk >= 0 &&
!test_bit(Blocked, &rdev->flags) &&
test_bit(Faulty, &rdev->flags) &&
@@ -8040,7 +8021,7 @@ void md_ack_all_badblocks(struct badblocks *bb)
return;
write_seqlock_irq(&bb->lock);
- if (bb->changed == 0) {
+ if (bb->changed == 0 && bb->unacked_exist) {
u64 *p = bb->page;
int i;
for (i = 0; i < bb->count ; i++) {
@@ -8157,30 +8138,23 @@ static int md_notify_reboot(struct notifier_block *this,
struct mddev *mddev;
int need_delay = 0;
- if ((code == SYS_DOWN) || (code == SYS_HALT) || (code == SYS_POWER_OFF)) {
-
- printk(KERN_INFO "md: stopping all md devices.\n");
-
- for_each_mddev(mddev, tmp) {
- if (mddev_trylock(mddev)) {
- /* Force a switch to readonly even array
- * appears to still be in use. Hence
- * the '100'.
- */
- md_set_readonly(mddev, 100);
- mddev_unlock(mddev);
- }
- need_delay = 1;
+ for_each_mddev(mddev, tmp) {
+ if (mddev_trylock(mddev)) {
+ __md_stop_writes(mddev);
+ mddev->safemode = 2;
+ mddev_unlock(mddev);
}
- /*
- * certain more exotic SCSI devices are known to be
- * volatile wrt too early system reboots. While the
- * right place to handle this issue is the given
- * driver, we do want to have a safe RAID driver ...
- */
- if (need_delay)
- mdelay(1000*1);
+ need_delay = 1;
}
+ /*
+ * certain more exotic SCSI devices are known to be
+ * volatile wrt too early system reboots. While the
+ * right place to handle this issue is the given
+ * driver, we do want to have a safe RAID driver ...
+ */
+ if (need_delay)
+ mdelay(1000*1);
+
return NOTIFY_DONE;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.