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Subject[PATCH] md: use list_for_each_entry macro directly
Date
From: Cheng Renquan <crquan@gmail.com>

The rdev_for_each macro defined in <linux/raid/md_k.h> is identical to
list_for_each_entry_safe, from <linux/list.h>, it should be defined to
use list_for_each_entry_safe, instead of reinventing the wheel.

But some calls to each_entry_safe don't really need a safe version,
just a direct list_for_each_entry is enough, this could save a temp
variable (tmp) in every function that used rdev_for_each.

In this patch, most rdev_for_each loops are replaced by list_for_each_entry,
totally save many tmp vars; and only in the other situations that will call
list_del to delete an entry, the safe version is used.

Signed-off-by: Cheng Renquan <crquan@gmail.com>
---
This is a reimplementation of the previous:

Subject: md: make use of list_for_each_entry_safe
http://marc.info/?l=linux-raid&m=122672921822724&w=2

please ignore that silently.

drivers/md/bitmap.c | 3 +-
drivers/md/faulty.c | 3 +-
drivers/md/linear.c | 3 +-
drivers/md/md.c | 109 ++++++++++++++++++---------------------------
drivers/md/multipath.c | 3 +-
drivers/md/raid0.c | 10 ++---
drivers/md/raid1.c | 3 +-
drivers/md/raid10.c | 3 +-
drivers/md/raid5.c | 8 +--
include/linux/raid/md_k.h | 11 ++---
10 files changed, 61 insertions(+), 95 deletions(-)

diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index ac89a5d..abcef18 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -213,14 +213,13 @@ static struct page *read_sb_page(mddev_t *mddev, long offset, unsigned long inde
/* choose a good rdev and read the page from there */

mdk_rdev_t *rdev;
- struct list_head *tmp;
struct page *page = alloc_page(GFP_KERNEL);
sector_t target;

if (!page)
return ERR_PTR(-ENOMEM);

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
if (! test_bit(In_sync, &rdev->flags)
|| test_bit(Faulty, &rdev->flags))
continue;
diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c
index f26c1f9..86d9adf 100644
--- a/drivers/md/faulty.c
+++ b/drivers/md/faulty.c
@@ -283,7 +283,6 @@ static int reconfig(mddev_t *mddev, int layout, int chunk_size)
static int run(mddev_t *mddev)
{
mdk_rdev_t *rdev;
- struct list_head *tmp;
int i;

conf_t *conf = kmalloc(sizeof(*conf), GFP_KERNEL);
@@ -296,7 +295,7 @@ static int run(mddev_t *mddev)
}
conf->nfaults = 0;

- rdev_for_each(rdev, tmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
conf->rdev = rdev;

mddev->array_sectors = mddev->size * 2;
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 3b90c5c..1e3aea9 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -105,7 +105,6 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
int i, nb_zone, cnt;
sector_t min_sectors;
sector_t curr_sector;
- struct list_head *tmp;

conf = kzalloc (sizeof (*conf) + raid_disks*sizeof(dev_info_t),
GFP_KERNEL);
@@ -115,7 +114,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
cnt = 0;
conf->array_sectors = 0;

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
int j = rdev->raid_disk;
dev_info_t *disk = conf->disks + j;

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 1b1d326..adb3335 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -307,25 +307,23 @@ static inline void mddev_unlock(mddev_t * mddev)

static mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr)
{
- mdk_rdev_t * rdev;
- struct list_head *tmp;
+ mdk_rdev_t *rdev;

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->desc_nr == nr)
return rdev;
- }
+
return NULL;
}

static mdk_rdev_t * find_rdev(mddev_t * mddev, dev_t dev)
{
- struct list_head *tmp;
mdk_rdev_t *rdev;

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->bdev->bd_dev == dev)
return rdev;
- }
+
return NULL;
}

@@ -861,7 +859,6 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev)
static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
{
mdp_super_t *sb;
- struct list_head *tmp;
mdk_rdev_t *rdev2;
int next_spare = mddev->raid_disks;

@@ -933,7 +930,7 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
sb->state |= (1<<MD_SB_BITMAP_PRESENT);

sb->disks[0].state = (1<<MD_DISK_REMOVED);
- rdev_for_each(rdev2, tmp, mddev) {
+ list_for_each_entry(rdev2, &mddev->disks, same_set) {
mdp_disk_t *d;
int desc_nr;
if (rdev2->raid_disk >= 0 && test_bit(In_sync, &rdev2->flags)
@@ -1259,7 +1256,6 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev)
static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
{
struct mdp_superblock_1 *sb;
- struct list_head *tmp;
mdk_rdev_t *rdev2;
int max_dev, i;
/* make rdev->sb match mddev and rdev data. */
@@ -1307,7 +1303,7 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
}

max_dev = 0;
- rdev_for_each(rdev2, tmp, mddev)
+ list_for_each_entry(rdev2, &mddev->disks, same_set)
if (rdev2->desc_nr+1 > max_dev)
max_dev = rdev2->desc_nr+1;

@@ -1316,7 +1312,7 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
for (i=0; i<max_dev;i++)
sb->dev_roles[i] = cpu_to_le16(0xfffe);

- rdev_for_each(rdev2, tmp, mddev) {
+ list_for_each_entry(rdev2, &mddev->disks, same_set) {
i = rdev2->desc_nr;
if (test_bit(Faulty, &rdev2->flags))
sb->dev_roles[i] = cpu_to_le16(0xfffe);
@@ -1571,8 +1567,7 @@ static void kick_rdev_from_array(mdk_rdev_t * rdev)

static void export_array(mddev_t *mddev)
{
- struct list_head *tmp;
- mdk_rdev_t *rdev;
+ mdk_rdev_t *rdev, *tmp;

rdev_for_each(rdev, tmp, mddev) {
if (!rdev->mddev) {
@@ -1643,7 +1638,7 @@ static void print_rdev(mdk_rdev_t *rdev)

static void md_print_devices(void)
{
- struct list_head *tmp, *tmp2;
+ struct list_head *tmp;
mdk_rdev_t *rdev;
mddev_t *mddev;
char b[BDEVNAME_SIZE];
@@ -1658,11 +1653,11 @@ static void md_print_devices(void)
bitmap_print_sb(mddev->bitmap);
else
printk("%s: ", mdname(mddev));
- rdev_for_each(rdev, tmp2, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
printk("<%s>", bdevname(rdev->bdev,b));
printk("\n");

- rdev_for_each(rdev, tmp2, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
print_rdev(rdev);
}
printk("md: **********************************\n");
@@ -1679,9 +1674,8 @@ static void sync_sbs(mddev_t * mddev, int nospares)
* with the rest of the array)
*/
mdk_rdev_t *rdev;
- struct list_head *tmp;

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
if (rdev->sb_events == mddev->events ||
(nospares &&
rdev->raid_disk < 0 &&
@@ -1699,7 +1693,6 @@ static void sync_sbs(mddev_t * mddev, int nospares)

static void md_update_sb(mddev_t * mddev, int force_change)
{
- struct list_head *tmp;
mdk_rdev_t *rdev;
int sync_req;
int nospares = 0;
@@ -1790,7 +1783,7 @@ repeat:
mdname(mddev),mddev->in_sync);

bitmap_update_sb(mddev->bitmap);
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
char b[BDEVNAME_SIZE];
dprintk(KERN_INFO "md: ");
if (rdev->sb_loaded != 1)
@@ -1999,7 +1992,6 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
md_wakeup_thread(rdev->mddev->thread);
} else if (rdev->mddev->pers) {
mdk_rdev_t *rdev2;
- struct list_head *tmp;
/* Activating a spare .. or possibly reactivating
* if we every get bitmaps working here.
*/
@@ -2010,7 +2002,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
if (rdev->mddev->pers->hot_add_disk == NULL)
return -EINVAL;

- rdev_for_each(rdev2, tmp, rdev->mddev)
+ list_for_each_entry(rdev2, &rdev->mddev->disks, same_set)
if (rdev2->raid_disk == slot)
return -EEXIST;

@@ -2125,14 +2117,14 @@ rdev_size_store(mdk_rdev_t *rdev, const char *buf, size_t len)
*/
mddev_t *mddev;
int overlap = 0;
- struct list_head *tmp, *tmp2;
+ struct list_head *tmp;

mddev_unlock(my_mddev);
for_each_mddev(mddev, tmp) {
mdk_rdev_t *rdev2;

mddev_lock(mddev);
- rdev_for_each(rdev2, tmp2, mddev)
+ list_for_each_entry(rdev2, &mddev->disks, same_set)
if (test_bit(AllReserved, &rdev2->flags) ||
(rdev->bdev == rdev2->bdev &&
rdev != rdev2 &&
@@ -2328,12 +2320,11 @@ abort_free:
static void analyze_sbs(mddev_t * mddev)
{
int i;
- struct list_head *tmp;
mdk_rdev_t *rdev, *freshest;
char b[BDEVNAME_SIZE];

freshest = NULL;
- rdev_for_each(rdev, tmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
switch (super_types[mddev->major_version].
load_super(rdev, freshest, mddev->minor_version)) {
case 1:
@@ -2354,7 +2345,7 @@ static void analyze_sbs(mddev_t * mddev)
validate_super(mddev, freshest);

i = 0;
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
if (rdev != freshest)
if (super_types[mddev->major_version].
validate_super(mddev, rdev)) {
@@ -3501,7 +3492,6 @@ static int do_md_run(mddev_t * mddev)
{
int err;
int chunk_size;
- struct list_head *tmp;
mdk_rdev_t *rdev;
struct gendisk *disk;
struct mdk_personality *pers;
@@ -3540,7 +3530,7 @@ static int do_md_run(mddev_t * mddev)
}

/* devices must have minimum size of one chunk */
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
if (test_bit(Faulty, &rdev->flags))
continue;
if (rdev->size < chunk_size / 1024) {
@@ -3565,7 +3555,7 @@ static int do_md_run(mddev_t * mddev)
* the only valid external interface is through the md
* device.
*/
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
if (test_bit(Faulty, &rdev->flags))
continue;
sync_blockdev(rdev->bdev);
@@ -3630,10 +3620,10 @@ static int do_md_run(mddev_t * mddev)
*/
char b[BDEVNAME_SIZE], b2[BDEVNAME_SIZE];
mdk_rdev_t *rdev2;
- struct list_head *tmp2;
int warned = 0;
- rdev_for_each(rdev, tmp, mddev) {
- rdev_for_each(rdev2, tmp2, mddev) {
+
+ list_for_each_entry(rdev, &mddev->disks, same_set)
+ list_for_each_entry(rdev2, &mddev->disks, same_set) {
if (rdev < rdev2 &&
rdev->bdev->bd_contains ==
rdev2->bdev->bd_contains) {
@@ -3647,7 +3637,7 @@ static int do_md_run(mddev_t * mddev)
warned = 1;
}
}
- }
+
if (warned)
printk(KERN_WARNING
"True protection against single-disk"
@@ -3694,7 +3684,7 @@ static int do_md_run(mddev_t * mddev)
mddev->safemode_delay = (200 * HZ)/1000 +1; /* 200 msec delay */
mddev->in_sync = 1;

- rdev_for_each(rdev, tmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
@@ -3725,9 +3715,8 @@ static int do_md_run(mddev_t * mddev)
* it will remove the drives and not do the right thing
*/
if (mddev->degraded && !mddev->sync_thread) {
- struct list_head *rtmp;
int spares = 0;
- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0 &&
!test_bit(In_sync, &rdev->flags) &&
!test_bit(Faulty, &rdev->flags))
@@ -3883,7 +3872,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
*/
if (mode == 0) {
mdk_rdev_t *rdev;
- struct list_head *tmp;

printk(KERN_INFO "md: %s stopped.\n", mdname(mddev));

@@ -3895,7 +3883,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
}
mddev->bitmap_offset = 0;

- rdev_for_each(rdev, tmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0) {
char nm[20];
sprintf(nm, "rd%d", rdev->raid_disk);
@@ -3956,7 +3944,6 @@ out:
static void autorun_array(mddev_t *mddev)
{
mdk_rdev_t *rdev;
- struct list_head *tmp;
int err;

if (list_empty(&mddev->disks))
@@ -3964,7 +3951,7 @@ static void autorun_array(mddev_t *mddev)

printk(KERN_INFO "md: running: ");

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
char b[BDEVNAME_SIZE];
printk("<%s>", bdevname(rdev->bdev,b));
}
@@ -3991,8 +3978,7 @@ static void autorun_array(mddev_t *mddev)
*/
static void autorun_devices(int part)
{
- struct list_head *tmp;
- mdk_rdev_t *rdev0, *rdev;
+ mdk_rdev_t *rdev0, *rdev, *tmp;
mddev_t *mddev;
char b[BDEVNAME_SIZE];

@@ -4007,7 +3993,7 @@ static void autorun_devices(int part)
printk(KERN_INFO "md: considering %s ...\n",
bdevname(rdev0->bdev,b));
INIT_LIST_HEAD(&candidates);
- rdev_for_each_list(rdev, tmp, pending_raid_disks)
+ rdev_for_each_list(rdev, tmp, &pending_raid_disks)
if (super_90_load(rdev, rdev0, 0) >= 0) {
printk(KERN_INFO "md: adding %s ...\n",
bdevname(rdev->bdev,b));
@@ -4053,7 +4039,7 @@ static void autorun_devices(int part)
} else {
printk(KERN_INFO "md: created %s\n", mdname(mddev));
mddev->persistent = 1;
- rdev_for_each_list(rdev, tmp, candidates) {
+ rdev_for_each_list(rdev, tmp, &candidates) {
list_del_init(&rdev->same_set);
if (bind_rdev_to_array(rdev, mddev))
export_rdev(rdev);
@@ -4064,7 +4050,7 @@ static void autorun_devices(int part)
/* on success, candidates will be empty, on error
* it won't...
*/
- rdev_for_each_list(rdev, tmp, candidates) {
+ rdev_for_each_list(rdev, tmp, &candidates) {
list_del_init(&rdev->same_set);
export_rdev(rdev);
}
@@ -4093,10 +4079,9 @@ static int get_array_info(mddev_t * mddev, void __user * arg)
mdu_array_info_t info;
int nr,working,active,failed,spare;
mdk_rdev_t *rdev;
- struct list_head *tmp;

nr=working=active=failed=spare=0;
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
nr++;
if (test_bit(Faulty, &rdev->flags))
failed++;
@@ -4614,9 +4599,8 @@ static int set_array_info(mddev_t * mddev, mdu_array_info_t *info)

static int update_size(mddev_t *mddev, sector_t num_sectors)
{
- mdk_rdev_t * rdev;
+ mdk_rdev_t *rdev;
int rv;
- struct list_head *tmp;
int fit = (num_sectors == 0);

if (mddev->pers->resize == NULL)
@@ -4638,7 +4622,7 @@ static int update_size(mddev_t *mddev, sector_t num_sectors)
* grow, and re-add.
*/
return -EBUSY;
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
sector_t avail;
avail = rdev->size * 2;

@@ -5187,11 +5171,10 @@ static void status_unused(struct seq_file *seq)
{
int i = 0;
mdk_rdev_t *rdev;
- struct list_head *tmp;

seq_printf(seq, "unused devices: ");

- rdev_for_each_list(rdev, tmp, pending_raid_disks) {
+ list_for_each_entry(rdev, &pending_raid_disks, same_set) {
char b[BDEVNAME_SIZE];
i++;
seq_printf(seq, "%s ",
@@ -5350,7 +5333,6 @@ static int md_seq_show(struct seq_file *seq, void *v)
{
mddev_t *mddev = v;
sector_t size;
- struct list_head *tmp2;
mdk_rdev_t *rdev;
struct mdstat_info *mi = seq->private;
struct bitmap *bitmap;
@@ -5387,7 +5369,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
}

size = 0;
- rdev_for_each(rdev, tmp2, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
char b[BDEVNAME_SIZE];
seq_printf(seq, " %s[%d]",
bdevname(rdev->bdev,b), rdev->desc_nr);
@@ -5694,7 +5676,6 @@ void md_do_sync(mddev_t *mddev)
struct list_head *tmp;
sector_t last_check;
int skipped = 0;
- struct list_head *rtmp;
mdk_rdev_t *rdev;
char *desc;

@@ -5799,7 +5780,7 @@ void md_do_sync(mddev_t *mddev)
/* recovery follows the physical size of devices */
max_sectors = mddev->size << 1;
j = MaxSector;
- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0 &&
!test_bit(Faulty, &rdev->flags) &&
!test_bit(In_sync, &rdev->flags) &&
@@ -5949,7 +5930,7 @@ void md_do_sync(mddev_t *mddev)
} else {
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery))
mddev->curr_resync = MaxSector;
- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0 &&
!test_bit(Faulty, &rdev->flags) &&
!test_bit(In_sync, &rdev->flags) &&
@@ -5985,10 +5966,9 @@ EXPORT_SYMBOL_GPL(md_do_sync);
static int remove_and_add_spares(mddev_t *mddev)
{
mdk_rdev_t *rdev;
- struct list_head *rtmp;
int spares = 0;

- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0 &&
!test_bit(Blocked, &rdev->flags) &&
(test_bit(Faulty, &rdev->flags) ||
@@ -6004,7 +5984,7 @@ static int remove_and_add_spares(mddev_t *mddev)
}

if (mddev->degraded && ! mddev->ro) {
- rdev_for_each(rdev, rtmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
if (rdev->raid_disk >= 0 &&
!test_bit(In_sync, &rdev->flags) &&
!test_bit(Blocked, &rdev->flags))
@@ -6056,7 +6036,6 @@ static int remove_and_add_spares(mddev_t *mddev)
void md_check_recovery(mddev_t *mddev)
{
mdk_rdev_t *rdev;
- struct list_head *rtmp;


if (mddev->bitmap)
@@ -6120,7 +6099,7 @@ void md_check_recovery(mddev_t *mddev)
if (mddev->flags)
md_update_sb(mddev, 0);

- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (test_and_clear_bit(StateChanged, &rdev->flags))
sysfs_notify_dirent(rdev->sysfs_state);

@@ -6149,7 +6128,7 @@ void md_check_recovery(mddev_t *mddev)
* information must be scrapped
*/
if (!mddev->degraded)
- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
rdev->saved_raid_disk = -1;

mddev->recovery = 0;
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index d4ac47d..f6d08f2 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -408,7 +408,6 @@ static int multipath_run (mddev_t *mddev)
int disk_idx;
struct multipath_info *disk;
mdk_rdev_t *rdev;
- struct list_head *tmp;

if (mddev->level != LEVEL_MULTIPATH) {
printk("multipath: %s: raid level not set to multipath IO (%d)\n",
@@ -441,7 +440,7 @@ static int multipath_run (mddev_t *mddev)
}

conf->working_disks = 0;
- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
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 8ac6488..37293d1 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -57,7 +57,6 @@ static int create_strip_zones (mddev_t *mddev)
sector_t min_spacing;
raid0_conf_t *conf = mddev_to_conf(mddev);
mdk_rdev_t *smallest, *rdev1, *rdev2, *rdev;
- struct list_head *tmp1, *tmp2;
struct strip_zone *zone;
int cnt;
char b[BDEVNAME_SIZE];
@@ -67,11 +66,11 @@ static int create_strip_zones (mddev_t *mddev)
*/
conf->nr_strip_zones = 0;

- rdev_for_each(rdev1, tmp1, mddev) {
+ list_for_each_entry(rdev1, &mddev->disks, same_set) {
printk("raid0: looking at %s\n",
bdevname(rdev1->bdev,b));
c = 0;
- rdev_for_each(rdev2, tmp2, mddev) {
+ list_for_each_entry(rdev2, &mddev->disks, same_set) {
printk("raid0: comparing %s(%llu)",
bdevname(rdev1->bdev,b),
(unsigned long long)rdev1->size);
@@ -119,7 +118,7 @@ static int create_strip_zones (mddev_t *mddev)
cnt = 0;
smallest = NULL;
zone->dev = conf->devlist;
- rdev_for_each(rdev1, tmp1, mddev) {
+ list_for_each_entry(rdev1, &mddev->disks, same_set) {
int j = rdev1->raid_disk;

if (j < 0 || j >= mddev->raid_disks) {
@@ -265,7 +264,6 @@ static int raid0_run (mddev_t *mddev)
s64 size;
raid0_conf_t *conf;
mdk_rdev_t *rdev;
- struct list_head *tmp;

if (mddev->chunk_size == 0) {
printk(KERN_ERR "md/raid0: non-zero chunk size required.\n");
@@ -291,7 +289,7 @@ static int raid0_run (mddev_t *mddev)

/* calculate array device size */
mddev->array_sectors = 0;
- rdev_for_each(rdev, tmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
mddev->array_sectors += rdev->size * 2;

printk("raid0 : md_size is %llu blocks.\n",
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 9c788e2..c165b1e 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1919,7 +1919,6 @@ static int run(mddev_t *mddev)
int i, j, disk_idx;
mirror_info_t *disk;
mdk_rdev_t *rdev;
- struct list_head *tmp;

if (mddev->level != 1) {
printk("raid1: %s: raid level not set to mirroring (%d)\n",
@@ -1964,7 +1963,7 @@ static int run(mddev_t *mddev)
spin_lock_init(&conf->device_lock);
mddev->queue->queue_lock = &conf->device_lock;

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
disk_idx = rdev->raid_disk;
if (disk_idx >= mddev->raid_disks
|| disk_idx < 0)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 970a96e..6736d6d 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2025,7 +2025,6 @@ static int run(mddev_t *mddev)
int i, disk_idx;
mirror_info_t *disk;
mdk_rdev_t *rdev;
- struct list_head *tmp;
int nc, fc, fo;
sector_t stride, size;

@@ -2108,7 +2107,7 @@ static int run(mddev_t *mddev)
spin_lock_init(&conf->device_lock);
mddev->queue->queue_lock = &conf->device_lock;

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
disk_idx = rdev->raid_disk;
if (disk_idx >= mddev->raid_disks
|| disk_idx < 0)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index a36a743..a5ba080 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3998,7 +3998,6 @@ static int run(mddev_t *mddev)
int raid_disk, memory;
mdk_rdev_t *rdev;
struct disk_info *disk;
- struct list_head *tmp;
int working_disks = 0;

if (mddev->level != 5 && mddev->level != 4 && mddev->level != 6) {
@@ -4108,7 +4107,7 @@ static int run(mddev_t *mddev)

pr_debug("raid5: run(%s) called.\n", mdname(mddev));

- rdev_for_each(rdev, tmp, mddev) {
+ list_for_each_entry(rdev, &mddev->disks, same_set) {
raid_disk = rdev->raid_disk;
if (raid_disk >= conf->raid_disks
|| raid_disk < 0)
@@ -4533,7 +4532,6 @@ static int raid5_start_reshape(mddev_t *mddev)
{
raid5_conf_t *conf = mddev_to_conf(mddev);
mdk_rdev_t *rdev;
- struct list_head *rtmp;
int spares = 0;
int added_devices = 0;
unsigned long flags;
@@ -4541,7 +4539,7 @@ static int raid5_start_reshape(mddev_t *mddev)
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
return -EBUSY;

- rdev_for_each(rdev, rtmp, mddev)
+ list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk < 0 &&
!test_bit(Faulty, &rdev->flags))
spares++;
@@ -4563,7 +4561,7 @@ static int raid5_start_reshape(mddev_t *mddev)
/* Add some new drives, as many as will fit.
* We know there are enough to make the newly sized array work.
*/
- rdev_for_each(rdev, rtmp, mddev)
+ 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) {
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 8fc909e..2a29d3c 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -334,17 +334,14 @@ static inline char * mdname (mddev_t * mddev)
* iterates through some rdev ringlist. It's safe to remove the
* current 'rdev'. Dont touch 'tmp' though.
*/
-#define rdev_for_each_list(rdev, tmp, list) \
- \
- for ((tmp) = (list).next; \
- (rdev) = (list_entry((tmp), mdk_rdev_t, same_set)), \
- (tmp) = (tmp)->next, (tmp)->prev != &(list) \
- ; )
+#define rdev_for_each_list(rdev, tmp, head) \
+ list_for_each_entry_safe(rdev, tmp, head, same_set)
+
/*
* iterates through the 'same array disks' ringlist
*/
#define rdev_for_each(rdev, tmp, mddev) \
- rdev_for_each_list(rdev, tmp, (mddev)->disks)
+ list_for_each_entry_safe(rdev, tmp, &((mddev)->disks), same_set)

#define rdev_for_each_rcu(rdev, mddev) \
list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)
--
1.6.0.2


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