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md: Export and rename find_rdev_nr_rcu

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This is required by the clustering module (patches to follow) to
find the device to remove or re-add.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Goldwyn Rodrigues 2015-04-14 10:43:55 -05:00 committed by NeilBrown
parent fb56dfef4e
commit 57d051dcca
2 changed files with 6 additions and 4 deletions
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9
drivers/md/md.c
View File

@ -642,7 +642,7 @@ void mddev_unlock(struct mddev *mddev)
}
EXPORT_SYMBOL_GPL(mddev_unlock);
static struct md_rdev *find_rdev_nr_rcu(struct mddev *mddev, int nr)
struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr)
{
struct md_rdev *rdev;
@ -652,6 +652,7 @@ static struct md_rdev *find_rdev_nr_rcu(struct mddev *mddev, int nr)
return NULL;
}
EXPORT_SYMBOL_GPL(md_find_rdev_nr_rcu);
static struct md_rdev *find_rdev(struct mddev *mddev, dev_t dev)
{
@ -2049,11 +2050,11 @@ static int bind_rdev_to_array(struct md_rdev *rdev, struct mddev *mddev)
int choice = 0;
if (mddev->pers)
choice = mddev->raid_disks;
while (find_rdev_nr_rcu(mddev, choice))
while (md_find_rdev_nr_rcu(mddev, choice))
choice++;
rdev->desc_nr = choice;
} else {
if (find_rdev_nr_rcu(mddev, rdev->desc_nr)) {
if (md_find_rdev_nr_rcu(mddev, rdev->desc_nr)) {
rcu_read_unlock();
return -EBUSY;
}
@ -5721,7 +5722,7 @@ static int get_disk_info(struct mddev *mddev, void __user * arg)
return -EFAULT;
rcu_read_lock();
rdev = find_rdev_nr_rcu(mddev, info.number);
rdev = md_find_rdev_nr_rcu(mddev, info.number);
if (rdev) {
info.major = MAJOR(rdev->bdev->bd_dev);
info.minor = MINOR(rdev->bdev->bd_dev);

1
drivers/md/md.h
View File

@ -672,6 +672,7 @@ extern void md_unplug(struct blk_plug_cb *cb, bool from_schedule);
extern void md_reload_sb(struct mddev *mddev);
extern void md_update_sb(struct mddev *mddev, int force);
extern void md_kick_rdev_from_array(struct md_rdev * rdev);
struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr);
static inline int mddev_check_plugged(struct mddev *mddev)
{
return !!blk_check_plugged(md_unplug, mddev,