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md: remove unnecessary test for MD_MAJOR in md_ioctl() 

unknown ioctls no longer get this deep into md_ioctl since
md_ioctl_valid() was introduced in 3.14.
So remove the test and the misleading comment.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2014-09-30 15:36:28 +10:00
parent e1960f8c5c
commit 326eb17d73
1 changed files with 1 additions and 4 deletions
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5
drivers/md/md.c
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@ -6559,11 +6559,8 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
/* /*
* The remaining ioctls are changing the state of the * The remaining ioctls are changing the state of the
* superblock, so we do not allow them on read-only arrays. * superblock, so we do not allow them on read-only arrays.
* However non-MD ioctls (e.g. get-size) will still come through
* here and hit the 'default' below, so only disallow
* 'md' ioctls, and switch to rw mode if started auto-readonly.
*/ */
if (_IOC_TYPE(cmd) == MD_MAJOR && mddev->ro && mddev->pers) { if (mddev->ro && mddev->pers) {
if (mddev->ro == 2) { if (mddev->ro == 2) {
mddev->ro = 0; mddev->ro = 0;
sysfs_notify_dirent_safe(mddev->sysfs_state); sysfs_notify_dirent_safe(mddev->sysfs_state);