diff options
Diffstat (limited to 'block/blk-lib.c')
| -rw-r--r-- | block/blk-lib.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c index 0bdc77888dc5..d1b9dd03da25 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -37,6 +37,9 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector, if (!q) return -ENXIO; + if (bdev_read_only(bdev)) + return -EPERM; + if (flags & BLKDEV_DISCARD_SECURE) { if (!blk_queue_secure_erase(q)) return -EOPNOTSUPP; @@ -172,6 +175,9 @@ static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector, if (!q) return -ENXIO; + if (bdev_read_only(bdev)) + return -EPERM; + bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1; if ((sector | nr_sects) & bs_mask) return -EINVAL; @@ -249,6 +255,9 @@ static int __blkdev_issue_write_zeroes(struct block_device *bdev, if (!q) return -ENXIO; + if (bdev_read_only(bdev)) + return -EPERM; + /* Ensure that max_write_zeroes_sectors doesn't overflow bi_size */ max_write_zeroes_sectors = bdev_write_zeroes_sectors(bdev); @@ -303,6 +312,9 @@ static int __blkdev_issue_zero_pages(struct block_device *bdev, if (!q) return -ENXIO; + if (bdev_read_only(bdev)) + return -EPERM; + while (nr_sects != 0) { bio = next_bio(bio, __blkdev_sectors_to_bio_pages(nr_sects), gfp_mask); |