| Message ID | 20210823202930.137278-8-mcgrof@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | block: first batch of add_disk() error handling conversions | expand |
On Mon, Aug 23, 2021 at 01:29:27PM -0700, Luis Chamberlain wrote: > We never checked for errors on add_disk() as this function > returned void. Now that this is fixed, use the shiny new > error handling. > > We just do the unwinding of what was not done before, and are > sure to unlock prior to bailing. > > Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Looks good, Reviewed-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c index ae8fe54ea358..5c0d3536d7c7 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5704,7 +5704,11 @@ static int md_alloc(dev_t dev, char *name) * through to md_open, so make sure it doesn't get too far */ mutex_lock(&mddev->open_mutex); - add_disk(disk); + error = add_disk(disk); + if (error) { + blk_cleanup_disk(disk); + goto abort_unlock; + } error = kobject_add(&mddev->kobj, &disk_to_dev(disk)->kobj, "%s", "md"); if (error) { @@ -5718,6 +5722,7 @@ static int md_alloc(dev_t dev, char *name) if (mddev->kobj.sd && sysfs_create_group(&mddev->kobj, &md_bitmap_group)) pr_debug("pointless warning\n"); + abort_unlock: mutex_unlock(&mddev->open_mutex); abort: mutex_unlock(&disks_mutex);
We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. We just do the unwinding of what was not done before, and are sure to unlock prior to bailing. Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> --- drivers/md/md.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)