From 1e3fa9bd5061778fb5cf4648e4e8321e8cbbb95b Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 13 Mar 2012 11:21:18 +1100 Subject: md/raid5: make sure reshape_position is cleared on error path. Leaving a valid reshape_position value in place could be confusing. Signed-off-by: NeilBrown --- drivers/md/raid5.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 360f2b98f62..8b3eb41d3ee 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5592,6 +5592,7 @@ static int raid5_start_reshape(struct mddev *mddev) spin_lock_irq(&conf->device_lock); mddev->raid_disks = conf->raid_disks = conf->previous_raid_disks; conf->reshape_progress = MaxSector; + mddev->reshape_position = MaxSector; spin_unlock_irq(&conf->device_lock); return -EAGAIN; } -- cgit v1.2.3-70-g09d2 From 9d4c7d8799c418816342e263479fa010b182183e Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 13 Mar 2012 11:21:21 +1100 Subject: md/raid5: removed unused 'added_devices' variable. commit 908f4fbd265733 removed the last user of this variable, so we should discard it completely. Signed-off-by: NeilBrown --- drivers/md/raid5.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 8b3eb41d3ee..3f55145ff22 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5547,16 +5547,14 @@ static int raid5_start_reshape(struct mddev *mddev) * such devices during the reshape and confusion could result. */ if (mddev->delta_disks >= 0) { - int added_devices = 0; list_for_each_entry(rdev, &mddev->disks, same_set) if (rdev->raid_disk < 0 && !test_bit(Faulty, &rdev->flags)) { if (raid5_add_disk(mddev, rdev) == 0) { if (rdev->raid_disk - >= conf->previous_raid_disks) { + >= conf->previous_raid_disks) set_bit(In_sync, &rdev->flags); - added_devices++; - } else + else rdev->recovery_offset = 0; if (sysfs_link_rdev(mddev, rdev)) @@ -5566,7 +5564,6 @@ static int raid5_start_reshape(struct mddev *mddev) && !test_bit(Faulty, &rdev->flags)) { /* This is a spare that was manually added */ set_bit(In_sync, &rdev->flags); - added_devices++; } /* When a reshape changes the number of devices, -- cgit v1.2.3-70-g09d2 From 41fe75f60bcd4d698daed3e54bb099227358ce58 Mon Sep 17 00:00:00 2001 From: majianpeng Date: Tue, 13 Mar 2012 11:21:25 +1100 Subject: md/raid5: use atomic_dec_return() instead of atomic_dec() and atomic_read(). Signed-off-by: majianpeng Signed-off-by: NeilBrown --- drivers/md/raid5.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 3f55145ff22..99b2bbf8b5d 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -208,11 +208,10 @@ static void __release_stripe(struct r5conf *conf, struct stripe_head *sh) md_wakeup_thread(conf->mddev->thread); } else { BUG_ON(stripe_operations_active(sh)); - if (test_and_clear_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) { - atomic_dec(&conf->preread_active_stripes); - if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD) + if (test_and_clear_bit(STRIPE_PREREAD_ACTIVE, &sh->state)) + if (atomic_dec_return(&conf->preread_active_stripes) + < IO_THRESHOLD) md_wakeup_thread(conf->mddev->thread); - } atomic_dec(&conf->active_stripes); if (!test_bit(STRIPE_EXPANDING, &sh->state)) { list_add_tail(&sh->lru, &conf->inactive_list); -- cgit v1.2.3-70-g09d2 From dc10c643e8a8d008fd16dd6706e9e0018eadf8d2 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 19 Mar 2012 12:46:37 +1100 Subject: md: allow re-add to failed arrays. When an array is failed (some data inaccessible) then there is no point attempting to add a spare as it could not possibly be recovered. However that may be value in re-adding a recently removed device. e.g. if there is a write-intent-bitmap and it is clear, then access to the data could be restored by this action. So don't reject a re-add to a failed array for RAID10 and RAID5 (the only arrays types that check for a failed array). Signed-off-by: NeilBrown --- drivers/md/raid10.c | 2 +- drivers/md/raid5.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 1a19c962f86..f4f3edcdaf8 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1483,7 +1483,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) * very different from resync */ return -EBUSY; - if (!enough(conf, -1)) + if (rdev->saved_raid_disk < 0 && !enough(conf, -1)) return -EINVAL; if (rdev->raid_disk >= 0) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 99b2bbf8b5d..d38d235cc39 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5361,7 +5361,7 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev) if (mddev->recovery_disabled == conf->recovery_disabled) return -EBUSY; - if (has_failed(conf)) + if (rdev->saved_raid_disk < 0 && has_failed(conf)) /* no point adding a device */ return -EINVAL; -- cgit v1.2.3-70-g09d2 From dafb20fa34320a472deb7442f25a0c086e0feb33 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 19 Mar 2012 12:46:39 +1100 Subject: md: tidy up rdev_for_each usage. md.h has an 'rdev_for_each()' macro for iterating the rdevs in an mddev. However it uses the 'safe' version of list_for_each_entry, and so requires the extra variable, but doesn't include 'safe' in the name, which is useful documentation. Consequently some places use this safe version without needing it, and many use an explicity list_for_each entry. So: - rename rdev_for_each to rdev_for_each_safe - create a new rdev_for_each which uses the plain list_for_each_entry, - use the 'safe' version only where needed, and convert all other list_for_each_entry calls to use rdev_for_each. Signed-off-by: NeilBrown --- drivers/md/bitmap.c | 2 +- drivers/md/dm-raid.c | 16 +++++------ drivers/md/faulty.c | 2 +- drivers/md/linear.c | 2 +- drivers/md/md.c | 74 +++++++++++++++++++++++++------------------------- drivers/md/md.h | 5 +++- drivers/md/multipath.c | 2 +- drivers/md/raid0.c | 10 +++---- drivers/md/raid1.c | 4 +-- drivers/md/raid10.c | 4 +-- drivers/md/raid5.c | 8 +++--- 11 files changed, 66 insertions(+), 63 deletions(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 239af9a9aad..2c5dbc6248d 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -171,7 +171,7 @@ static struct page *read_sb_page(struct mddev *mddev, loff_t offset, did_alloc = 1; } - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { if (! test_bit(In_sync, &rdev->flags) || test_bit(Faulty, &rdev->flags)) continue; diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 787022c1818..c5a875d7b88 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -615,14 +615,14 @@ static int read_disk_sb(struct md_rdev *rdev, int size) static void super_sync(struct mddev *mddev, struct md_rdev *rdev) { - struct md_rdev *r, *t; + struct md_rdev *r; uint64_t failed_devices; struct dm_raid_superblock *sb; sb = page_address(rdev->sb_page); failed_devices = le64_to_cpu(sb->failed_devices); - rdev_for_each(r, t, mddev) + rdev_for_each(r, mddev) if ((r->raid_disk >= 0) && test_bit(Faulty, &r->flags)) failed_devices |= (1ULL << r->raid_disk); @@ -707,7 +707,7 @@ static int super_init_validation(struct mddev *mddev, struct md_rdev *rdev) struct dm_raid_superblock *sb; uint32_t new_devs = 0; uint32_t rebuilds = 0; - struct md_rdev *r, *t; + struct md_rdev *r; struct dm_raid_superblock *sb2; sb = page_address(rdev->sb_page); @@ -750,7 +750,7 @@ static int super_init_validation(struct mddev *mddev, struct md_rdev *rdev) * case the In_sync bit will /not/ be set and * recovery_cp must be MaxSector. */ - rdev_for_each(r, t, mddev) { + rdev_for_each(r, mddev) { if (!test_bit(In_sync, &r->flags)) { DMINFO("Device %d specified for rebuild: " "Clearing superblock", r->raid_disk); @@ -782,7 +782,7 @@ static int super_init_validation(struct mddev *mddev, struct md_rdev *rdev) * Now we set the Faulty bit for those devices that are * recorded in the superblock as failed. */ - rdev_for_each(r, t, mddev) { + rdev_for_each(r, mddev) { if (!r->sb_page) continue; sb2 = page_address(r->sb_page); @@ -855,11 +855,11 @@ static int super_validate(struct mddev *mddev, struct md_rdev *rdev) static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs) { int ret; - struct md_rdev *rdev, *freshest, *tmp; + struct md_rdev *rdev, *freshest; struct mddev *mddev = &rs->md; freshest = NULL; - rdev_for_each(rdev, tmp, mddev) { + rdev_for_each(rdev, mddev) { if (!rdev->meta_bdev) continue; @@ -888,7 +888,7 @@ static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs) if (super_validate(mddev, freshest)) return -EINVAL; - rdev_for_each(rdev, tmp, mddev) + rdev_for_each(rdev, mddev) if ((rdev != freshest) && super_validate(mddev, rdev)) return -EINVAL; diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c index feb2c3c7bb4..45135f69509 100644 --- a/drivers/md/faulty.c +++ b/drivers/md/faulty.c @@ -315,7 +315,7 @@ static int run(struct mddev *mddev) } conf->nfaults = 0; - list_for_each_entry(rdev, &mddev->disks, same_set) + rdev_for_each(rdev, mddev) conf->rdev = rdev; md_set_array_sectors(mddev, faulty_size(mddev, 0, 0)); diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 627456542fb..67940741b19 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -138,7 +138,7 @@ static struct linear_conf *linear_conf(struct mddev *mddev, int raid_disks) cnt = 0; conf->array_sectors = 0; - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { int j = rdev->raid_disk; struct dev_info *disk = conf->disks + j; sector_t sectors; diff --git a/drivers/md/md.c b/drivers/md/md.c index 115a6dd8583..119de175bf1 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<disks[0].state = (1<disks, same_set) { + rdev_for_each(rdev2, mddev) { mdp_disk_t *d; int desc_nr; int is_active = test_bit(In_sync, &rdev2->flags); @@ -1816,7 +1816,7 @@ retry: } 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; idev_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) && @@ -2364,7 +2364,7 @@ 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) { md_ack_all_badblocks(&rdev->badblocks); md_error(mddev, rdev); @@ -2430,7 +2430,7 @@ 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 +2444,7 @@ 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 +2493,7 @@ 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 +2896,7 @@ 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 +3193,7 @@ 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 +3214,7 @@ 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 +3403,7 @@ 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 +3456,7 @@ 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 +3465,7 @@ 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 +4796,7 @@ 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 +4867,8 @@ 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 +4945,7 @@ 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 */; @@ -5175,7 +5175,7 @@ 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 +5226,7 @@ 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 +5356,7 @@ 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 +5923,7 @@ 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)) @@ -6758,7 +6758,7 @@ 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); @@ -7170,7 +7170,7 @@ 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 +7342,7 @@ 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 +7388,7 @@ 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 +7406,7 @@ 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 +7451,7 @@ 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 +7529,7 @@ 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) && diff --git a/drivers/md/md.h b/drivers/md/md.h index 44c63dfeeb2..39acfe90cc2 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -519,7 +519,10 @@ static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev) /* * iterates through the 'same array disks' ringlist */ -#define rdev_for_each(rdev, tmp, mddev) \ +#define rdev_for_each(rdev, mddev) \ + list_for_each_entry(rdev, &((mddev)->disks), same_set) + +#define rdev_for_each_safe(rdev, tmp, mddev) \ list_for_each_entry_safe(rdev, tmp, &((mddev)->disks), same_set) #define rdev_for_each_rcu(rdev, mddev) \ diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index a222f516660..9339e67fcc7 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -428,7 +428,7 @@ static int multipath_run (struct mddev *mddev) } working_disks = 0; - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { disk_idx = rdev->raid_disk; if (disk_idx < 0 || disk_idx >= mddev->raid_disks) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 7294bd115e3..7ef5cbf31bb 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -91,7 +91,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf) if (!conf) return -ENOMEM; - list_for_each_entry(rdev1, &mddev->disks, same_set) { + rdev_for_each(rdev1, mddev) { pr_debug("md/raid0:%s: looking at %s\n", mdname(mddev), bdevname(rdev1->bdev, b)); @@ -102,7 +102,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf) sector_div(sectors, mddev->chunk_sectors); rdev1->sectors = sectors * mddev->chunk_sectors; - list_for_each_entry(rdev2, &mddev->disks, same_set) { + rdev_for_each(rdev2, mddev) { pr_debug("md/raid0:%s: comparing %s(%llu)" " with %s(%llu)\n", mdname(mddev), @@ -157,7 +157,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf) smallest = NULL; dev = conf->devlist; err = -EINVAL; - list_for_each_entry(rdev1, &mddev->disks, same_set) { + rdev_for_each(rdev1, mddev) { int j = rdev1->raid_disk; if (mddev->level == 10) { @@ -329,7 +329,7 @@ static sector_t raid0_size(struct mddev *mddev, sector_t sectors, int raid_disks WARN_ONCE(sectors || raid_disks, "%s does not support generic reshape\n", __func__); - list_for_each_entry(rdev, &mddev->disks, same_set) + rdev_for_each(rdev, mddev) array_sectors += rdev->sectors; return array_sectors; @@ -543,7 +543,7 @@ static void *raid0_takeover_raid45(struct mddev *mddev) return ERR_PTR(-EINVAL); } - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { /* check slot number for a disk */ if (rdev->raid_disk == mddev->raid_disks-1) { printk(KERN_ERR "md/raid0:%s: raid5 must have missing parity disk!\n", diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 118e0f69f22..a933bd4065a 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2504,7 +2504,7 @@ static struct r1conf *setup_conf(struct mddev *mddev) err = -EINVAL; spin_lock_init(&conf->device_lock); - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { int disk_idx = rdev->raid_disk; if (disk_idx >= mddev->raid_disks || disk_idx < 0) @@ -2622,7 +2622,7 @@ static int run(struct mddev *mddev) if (IS_ERR(conf)) return PTR_ERR(conf); - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { if (!mddev->gendisk) continue; disk_stack_limits(mddev->gendisk, rdev->bdev, diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 2ae7021320e..52bb37d4026 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3253,7 +3253,7 @@ static int run(struct mddev *mddev) blk_queue_io_opt(mddev->queue, chunk_size * (conf->raid_disks / conf->near_copies)); - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { disk_idx = rdev->raid_disk; if (disk_idx >= conf->raid_disks @@ -3419,7 +3419,7 @@ static void *raid10_takeover_raid0(struct mddev *mddev) conf = setup_conf(mddev); if (!IS_ERR(conf)) { - list_for_each_entry(rdev, &mddev->disks, same_set) + rdev_for_each(rdev, mddev) if (rdev->raid_disk >= 0) rdev->new_raid_disk = rdev->raid_disk * 2; conf->barrier = 1; diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index d38d235cc39..23ac880bba9 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4842,7 +4842,7 @@ static struct r5conf *setup_conf(struct mddev *mddev) pr_debug("raid456: run(%s) called.\n", mdname(mddev)); - list_for_each_entry(rdev, &mddev->disks, same_set) { + rdev_for_each(rdev, mddev) { raid_disk = rdev->raid_disk; if (raid_disk >= max_disks || raid_disk < 0) @@ -5177,7 +5177,7 @@ static int run(struct mddev *mddev) blk_queue_io_opt(mddev->queue, chunk_size * (conf->raid_disks - conf->max_degraded)); - list_for_each_entry(rdev, &mddev->disks, same_set) + rdev_for_each(rdev, mddev) disk_stack_limits(mddev->gendisk, rdev->bdev, rdev->data_offset << 9); } @@ -5500,7 +5500,7 @@ static int raid5_start_reshape(struct mddev *mddev) if (!check_stripe_cache(mddev)) return -ENOSPC; - list_for_each_entry(rdev, &mddev->disks, same_set) + rdev_for_each(rdev, mddev) if (!test_bit(In_sync, &rdev->flags) && !test_bit(Faulty, &rdev->flags)) spares++; @@ -5546,7 +5546,7 @@ static int raid5_start_reshape(struct mddev *mddev) * such devices during the reshape and confusion could result. */ if (mddev->delta_disks >= 0) { - list_for_each_entry(rdev, &mddev->disks, same_set) + rdev_for_each(rdev, mddev) if (rdev->raid_disk < 0 && !test_bit(Faulty, &rdev->flags)) { if (raid5_add_disk(mddev, rdev) == 0) { -- cgit v1.2.3-70-g09d2