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authorChristoph Hellwig <hch@lst.de>2020-09-03 07:40:57 +0200
committerJens Axboe <axboe@kernel.dk>2020-09-25 08:18:57 -0600
commitfa01b1e9733fd59ecb8b5b6d85dfb481d2025fbf (patch)
treef627199fb47da3dc4fa57dcbf305fff12997a918 /block
parent250eec9e390e2be6f672f9a77cf29791c189f7da (diff)
downloadlinux-fa01b1e9733fd59ecb8b5b6d85dfb481d2025fbf.tar.bz2
block: add a bdev_is_partition helper
Add a littler helper to make the somewhat arcane bd_contains checks a little more obvious. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/blk-lib.c2
-rw-r--r--block/ioctl.c4
-rw-r--r--block/scsi_ioctl.c2
3 files changed, 4 insertions, 4 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 0d1811e57ac7..e90614fd8d6a 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -64,7 +64,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
return -EINVAL;
/* In case the discard request is in a partition */
- if (bdev->bd_partno)
+ if (bdev_is_partition(bdev))
part_offset = bdev->bd_part->start_sect;
while (nr_sects) {
diff --git a/block/ioctl.c b/block/ioctl.c
index 06262c28f0c6..3fbc382eb926 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -23,7 +23,7 @@ static int blkpg_do_ioctl(struct block_device *bdev,
return -EACCES;
if (copy_from_user(&p, upart, sizeof(struct blkpg_partition)))
return -EFAULT;
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return -EINVAL;
if (p.pno <= 0)
@@ -94,7 +94,7 @@ static int blkdev_reread_part(struct block_device *bdev)
{
int ret;
- if (!disk_part_scan_enabled(bdev->bd_disk) || bdev != bdev->bd_contains)
+ if (!disk_part_scan_enabled(bdev->bd_disk) || bdev_is_partition(bdev))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 4421e61c1af1..d4abd1ed5a2d 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -852,7 +852,7 @@ EXPORT_SYMBOL(scsi_cmd_ioctl);
int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd)
{
- if (bd && bd == bd->bd_contains)
+ if (bd && !bdev_is_partition(bd))
return 0;
if (capable(CAP_SYS_RAWIO))