block/ioctl.c and fs/partition/check.c: check value returned by add_partition()

Now that add_partition() has been aught to propagate errors, let's check them.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Abdel Benamrouche <draconux@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/block/ioctl.c b/block/ioctl.c
index 52d6385..77185e5 100644 (file)
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -17,6 +17,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
        long long start, length;
        int part;
        int i;
+       int err;
 
        if (!capable(CAP_SYS_ADMIN))
                return -EACCES;
@@ -61,9 +62,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
                                }
                        }
                        /* all seems OK */
-                       add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
+                       err = add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
                        mutex_unlock(&bdev->bd_mutex);
-                       return 0;
+                       return err;
                case BLKPG_DEL_PARTITION:
                        if (!disk->part[part-1])
                                return -ENXIO;

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 2e6413f..7d6b34e 100644 (file)
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -499,10 +499,16 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
                if (!size)
                        continue;
                if (from + size > get_capacity(disk)) {
-                       printk(" %s: p%d exceeds device capacity\n",
+                       printk(KERN_ERR " %s: p%d exceeds device capacity\n",
                                disk->disk_name, p);
+                       continue;
+               }
+               res = add_partition(disk, p, from, size, state->parts[p].flags);
+               if (res) {
+                       printk(KERN_ERR " %s: p%d could not be added: %d\n",
+                               disk->disk_name, p, -res);
+                       continue;
                }
-               add_partition(disk, p, from, size, state->parts[p].flags);
 #ifdef CONFIG_BLK_DEV_MD
                if (state->parts[p].flags & ADDPART_FLAG_RAID)
                        md_autodetect_dev(bdev->bd_dev+p);