From: NeilBrown <[email protected]>
The conditions that cause these calls to MD_BUG are not kernel bugs, just
oddities in what userspace is asking for.
Also convert analyze_sbs to return void, and the value it returned was
always 0.
Signed-off-by: Neil Brown <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
25-akpm/drivers/md/md.c | 30 ++++++++----------------------
1 files changed, 8 insertions(+), 22 deletions(-)
diff -puN drivers/md/md.c~md-remove-a-number-of-misleading-calls-to-md_bug drivers/md/md.c
--- 25/drivers/md/md.c~md-remove-a-number-of-misleading-calls-to-md_bug 2005-04-12 03:21:50.447467720 -0700
+++ 25-akpm/drivers/md/md.c 2005-04-12 03:21:50.453466808 -0700
@@ -1387,7 +1387,7 @@ abort_free:
*/
-static int analyze_sbs(mddev_t * mddev)
+static void analyze_sbs(mddev_t * mddev)
{
int i;
struct list_head *tmp;
@@ -1441,7 +1441,6 @@ static int analyze_sbs(mddev_t * mddev)
" -- starting background reconstruction\n",
mdname(mddev));
- return 0;
}
int mdp_major = 0;
@@ -1508,10 +1507,9 @@ static int do_md_run(mddev_t * mddev)
struct gendisk *disk;
char b[BDEVNAME_SIZE];
- if (list_empty(&mddev->disks)) {
- MD_BUG();
+ if (list_empty(&mddev->disks))
+ /* cannot run an array with no devices.. */
return -EINVAL;
- }
if (mddev->pers)
return -EBUSY;
@@ -1519,10 +1517,8 @@ static int do_md_run(mddev_t * mddev)
/*
* Analyze all RAID superblock(s)
*/
- if (!mddev->raid_disks && analyze_sbs(mddev)) {
- MD_BUG();
- return -EINVAL;
- }
+ if (!mddev->raid_disks)
+ analyze_sbs(mddev);
chunk_size = mddev->chunk_size;
pnum = level_to_pers(mddev->level);
@@ -1548,7 +1544,7 @@ static int do_md_run(mddev_t * mddev)
* chunk-size has to be a power of 2 and multiples of PAGE_SIZE
*/
if ( (1 << ffz(~chunk_size)) != chunk_size) {
- MD_BUG();
+ printk(KERN_ERR "chunk_size of %d not valid\n", chunk_size);
return -EINVAL;
}
if (chunk_size < PAGE_SIZE) {
@@ -1573,11 +1569,6 @@ static int do_md_run(mddev_t * mddev)
}
}
- if (pnum >= MAX_PERSONALITY) {
- MD_BUG();
- return -EINVAL;
- }
-
#ifdef CONFIG_KMOD
if (!pers[pnum])
{
@@ -1762,10 +1753,8 @@ static void autorun_array(mddev_t *mddev
struct list_head *tmp;
int err;
- if (list_empty(&mddev->disks)) {
- MD_BUG();
+ if (list_empty(&mddev->disks))
return;
- }
printk(KERN_INFO "md: running: ");
@@ -3128,7 +3117,6 @@ int register_md_personality(int pnum, md
spin_lock(&pers_lock);
if (pers[pnum]) {
spin_unlock(&pers_lock);
- MD_BUG();
return -EBUSY;
}
@@ -3140,10 +3128,8 @@ int register_md_personality(int pnum, md
int unregister_md_personality(int pnum)
{
- if (pnum >= MAX_PERSONALITY) {
- MD_BUG();
+ if (pnum >= MAX_PERSONALITY)
return -EINVAL;
- }
printk(KERN_INFO "md: %s personality unregistered\n", pers[pnum]->name);
spin_lock(&pers_lock);
_
-
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