From 2f6d261e15e8d09a22192aa943c5ed8a792f04ef Mon Sep 17 00:00:00 2001 From: Ye Bin Date: Tue, 20 Sep 2022 10:39:37 +0800 Subject: [PATCH] md: factor out __md_set_array_info() Factor out __md_set_array_info(). No functional change. Signed-off-by: Ye Bin Signed-off-by: Song Liu --- drivers/md/md.c | 65 +++++++++++++++++++++++++++++++-------------------------- 1 file changed, 35 insertions(+), 30 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index a467b49..b0c3e7d 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -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; } -- 2.7.4