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[PATCH] md: provide proper rcu_dereference / rcu_assign_pointer annotations in md

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Acked-by: <paulmck@us.ibm.com>
Signed-off-by: Suzanne Wood <suzannew@cs.pdx.edu>
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:
Suzanne Wood
2005-11-08 21:39:27 -08:00
committed by Linus Torvalds
parent 9d88883e68
commit d6065f7bf8
5 changed files with 38 additions and 36 deletions
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8
drivers/md/raid6main.c
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@@ -1464,7 +1464,7 @@ static void handle_stripe(struct stripe_head *sh)
bi->bi_end_io = raid6_end_read_request;
rcu_read_lock();
rdev = conf->disks[i].rdev;
rdev = rcu_dereference(conf->disks[i].rdev);
if (rdev && rdev->faulty)
rdev = NULL;
if (rdev)
@@ -1538,7 +1538,7 @@ static void unplug_slaves(mddev_t *mddev)
rcu_read_lock();
for (i=0; i<mddev->raid_disks; i++) {
mdk_rdev_t *rdev = conf->disks[i].rdev;
mdk_rdev_t *rdev = rcu_dereference(conf->disks[i].rdev);
if (rdev && !rdev->faulty && atomic_read(&rdev->nr_pending)) {
request_queue_t *r_queue = bdev_get_queue(rdev->bdev);
@@ -1583,7 +1583,7 @@ static int raid6_issue_flush(request_queue_t *q, struct gendisk *disk,
rcu_read_lock();
for (i=0; i<mddev->raid_disks && ret == 0; i++) {
mdk_rdev_t *rdev = conf->disks[i].rdev;
mdk_rdev_t *rdev = rcu_dereference(conf->disks[i].rdev);
if (rdev && !rdev->faulty) {
struct block_device *bdev = rdev->bdev;
request_queue_t *r_queue = bdev_get_queue(bdev);
@@ -2154,7 +2154,7 @@ static int raid6_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
found = 1;
if (rdev->saved_raid_disk != disk)
conf->fullsync = 1;
p->rdev = rdev;
rcu_assign_pointer(p->rdev, rdev);
break;
}
print_raid6_conf(conf);