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md: Improve name of threads created by md_register_thread 

The management thread for raid4,5,6 arrays are all called
mdX_raid5, independent of the actual raid level, which is wrong and
can be confusion.

So change md_register_thread to use the name from the personality
unless no alternate name (like 'resync' or 'reshape') is given.

This is simpler and more correct.

Cc: Jinzc <zhenchengjin@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-09-23 18:09:45 +10:00
parent ee305acef5
commit 0da3c6194e
5 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/md/md.c
View File

@ -4218,7 +4218,7 @@ static int do_md_run(mddev_t * mddev)
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync,
mddev,
"%s_resync");
"resync");
if (!mddev->sync_thread) {
printk(KERN_ERR "%s: could not start resync"
" thread...\n",
@ -5631,7 +5631,10 @@ mdk_thread_t *md_register_thread(void (*run) (mddev_t *), mddev_t *mddev,
thread->run = run;
thread->mddev = mddev;
thread->timeout = MAX_SCHEDULE_TIMEOUT;
thread->tsk = kthread_run(md_thread, thread, name, mdname(thread->mddev));
thread->tsk = kthread_run(md_thread, thread,
"%s_%s",
mdname(thread->mddev),
name ?: mddev->pers->name);
if (IS_ERR(thread->tsk)) {
kfree(thread);
return NULL;
@ -6745,7 +6748,7 @@ void md_check_recovery(mddev_t *mddev)
}
mddev->sync_thread = md_register_thread(md_do_sync,
mddev,
"%s_resync");
"resync");
if (!mddev->sync_thread) {
printk(KERN_ERR "%s: could not start resync"
" thread...\n",

2
drivers/md/multipath.c
View File

@ -504,7 +504,7 @@ static int multipath_run (mddev_t *mddev)
}
{
mddev->thread = md_register_thread(multipathd, mddev, "%s_multipath");
mddev->thread = md_register_thread(multipathd, mddev, NULL);
if (!mddev->thread) {
printk(KERN_ERR "multipath: couldn't allocate thread"
" for %s\n", mdname(mddev));

2
drivers/md/raid1.c
View File

@ -2047,7 +2047,7 @@ static int run(mddev_t *mddev)
conf->last_used = j;
mddev->thread = md_register_thread(raid1d, mddev, "%s_raid1");
mddev->thread = md_register_thread(raid1d, mddev, NULL);
if (!mddev->thread) {
printk(KERN_ERR
"raid1: couldn't allocate thread for %s\n",

2
drivers/md/raid10.c
View File

@ -2188,7 +2188,7 @@ static int run(mddev_t *mddev)
}
mddev->thread = md_register_thread(raid10d, mddev, "%s_raid10");
mddev->thread = md_register_thread(raid10d, mddev, NULL);
if (!mddev->thread) {
printk(KERN_ERR
"raid10: couldn't allocate thread for %s\n",

6
drivers/md/raid5.c
View File

@ -4448,7 +4448,7 @@ static raid5_conf_t *setup_conf(mddev_t *mddev)
printk(KERN_INFO "raid5: allocated %dkB for %s\n",
memory, mdname(mddev));
conf->thread = md_register_thread(raid5d, mddev, "%s_raid5");
conf->thread = md_register_thread(raid5d, mddev, NULL);
if (!conf->thread) {
printk(KERN_ERR
"raid5: couldn't allocate thread for %s\n",
@ -4614,7 +4614,7 @@ static int run(mddev_t *mddev)
set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"%s_reshape");
"reshape");
}
/* read-ahead size must cover two whole stripes, which is
@ -5032,7 +5032,7 @@ static int raid5_start_reshape(mddev_t *mddev)
set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery);
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"%s_reshape");
"reshape");
if (!mddev->sync_thread) {
mddev->recovery = 0;
spin_lock_irq(&conf->device_lock);