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Code Issues Releases Wiki Activity

md: factor out __md_set_array_info() 

Factor out __md_set_array_info(). No functional change.

Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
This commit is contained in:
Ye Bin 2022-09-20 10:39:37 +08:00 committed by Song Liu
parent 42271ca389
commit 2f6d261e15
1 changed files with 35 additions and 30 deletions
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65
drivers/md/md.c
View File

@ -7464,6 +7464,40 @@ static inline bool md_ioctl_valid(unsigned int cmd)
}
}
static int __md_set_array_info(struct mddev *mddev, void __user *argp)
{
mdu_array_info_t info;
int err;
if (!argp)
memset(&info, 0, sizeof(info));
else if (copy_from_user(&info, argp, sizeof(info)))
return -EFAULT;
if (mddev->pers) {
err = update_array_info(mddev, &info);
if (err)
pr_warn("md: couldn't update array info. %d\n", err);
return err;
}
if (!list_empty(&mddev->disks)) {
pr_warn("md: array %s already has disks!\n", mdname(mddev));
return -EBUSY;
}
if (mddev->raid_disks) {
pr_warn("md: array %s already initialised!\n", mdname(mddev));
return -EBUSY;
}
err = md_set_array_info(mddev, &info);
if (err)
pr_warn("md: couldn't set array info. %d\n", err);
return err;
}
static int md_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
@ -7569,36 +7603,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
}
if (cmd == SET_ARRAY_INFO) {
mdu_array_info_t info;
if (!arg)
memset(&info, 0, sizeof(info));
else if (copy_from_user(&info, argp, sizeof(info))) {
err = -EFAULT;
goto unlock;
}
if (mddev->pers) {
err = update_array_info(mddev, &info);
if (err) {
pr_warn("md: couldn't update array info. %d\n", err);
goto unlock;
}
goto unlock;
}
if (!list_empty(&mddev->disks)) {
pr_warn("md: array %s already has disks!\n", mdname(mddev));
err = -EBUSY;
goto unlock;
}
if (mddev->raid_disks) {
pr_warn("md: array %s already initialised!\n", mdname(mddev));
err = -EBUSY;
goto unlock;
}
err = md_set_array_info(mddev, &info);
if (err) {
pr_warn("md: couldn't set array info. %d\n", err);
goto unlock;
}
err = __md_set_array_info(mddev, argp);
goto unlock;
}