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 <neilb@suse.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 115a6dd..119de17 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -439,7 +439,7 @@
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 @@
{
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 @@
{
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 @@
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);
@@ -1816,7 +1816,7 @@
}
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 @@
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 @@
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 @@
{
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 @@
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 @@
* 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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
* 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 @@
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 @@
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 @@
/* 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 @@
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 @@
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 @@
* 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 @@
}
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 @@
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 @@
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 @@
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 @@
"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 @@
* 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 @@
* 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) &&