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[PATCH] md: minor MD fixes

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1/ Use reduce stack usage, because 'gcc' apparently doesn't overlay
   different variables  that are in separate scopes...

2/ Use test_bit instead of ( .. & 1<< ..) which in this case is buggy.

Thanks to Andrew Morton

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2005-11-08 21:39:29 -08:00 committed by Linus Torvalds
parent 9c79197761
commit 31399d9e56
1 changed files with 7 additions and 7 deletions
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14
drivers/md/md.c
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@ -698,6 +698,7 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
struct list_head *tmp;
mdk_rdev_t *rdev2;
int next_spare = mddev->raid_disks;
char nm[20];
/* make rdev->sb match mddev data..
*
@ -768,7 +769,6 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
fixdesc |= (1 << desc_nr);
rdev2->desc_nr = desc_nr;
if (rdev2->raid_disk >= 0) {
char nm[20];
sprintf(nm, "rd%d", rdev2->raid_disk);
sysfs_remove_link(&mddev->kobj, nm);
}
@ -814,7 +814,6 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
&rdev2->bdev->bd_disk->kobj,
"block");
if (rdev2->raid_disk >= 0) {
char nm[20];
sprintf(nm, "rd%d", rdev2->raid_disk);
sysfs_create_link(&mddev->kobj,
&rdev2->kobj, nm);
@ -1722,9 +1721,9 @@ static ssize_t
md_show_scan(mddev_t *mddev, char *page)
{
char *type = "none";
if (mddev->recovery &
((1<<MD_RECOVERY_RUNNING) || (1<<MD_RECOVERY_NEEDED))) {
if (mddev->recovery & (1<<MD_RECOVERY_SYNC)) {
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) {
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
if (!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
type = "resync";
else if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery))
@ -1741,8 +1740,9 @@ static ssize_t
md_store_scan(mddev_t *mddev, const char *page, size_t len)
{
int canscan=0;
if (mddev->recovery &
((1<<MD_RECOVERY_RUNNING) || (1<<MD_RECOVERY_NEEDED)))
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))
return -EBUSY;
down(&mddev->reconfig_sem);
if (mddev->pers && mddev->pers->sync_request)