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| author | Christoph Hellwig <hch@lst.de> | 2021-10-19 08:20:22 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-19 06:16:50 -0600 |
| commit | 946e99373037be4841e8b42dcd136e03093c9fd5 (patch) | |
| tree | d8644172d57ff88b6e650f9a99ee6fb6b7bd75b1 /block/ioctl.c | |
| parent | f09313c57a17683cbcb305989daf1d94b49fd32c (diff) | |
| download | linux-stable-946e99373037be4841e8b42dcd136e03093c9fd5.tar.gz linux-stable-946e99373037be4841e8b42dcd136e03093c9fd5.tar.bz2 linux-stable-946e99373037be4841e8b42dcd136e03093c9fd5.zip | |
block/ioctl: use bdev_nr_sectors and bdev_nr_bytes
Use the proper helper to read the block device size.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211019062024.2171074-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/ioctl.c')
| -rw-r--r-- | block/ioctl.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index 77b1b2453f39..d6af0ac97e57 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -132,7 +132,7 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode, if (len & 511) return -EINVAL; - if (start + len > i_size_read(bdev->bd_inode)) + if (start + len > bdev_nr_bytes(bdev)) return -EINVAL; err = truncate_bdev_range(bdev, mode, start, start + len - 1); @@ -164,7 +164,7 @@ static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode, return -EINVAL; if (len & 511) return -EINVAL; - if (end >= (uint64_t)i_size_read(bdev->bd_inode)) + if (end >= (uint64_t)bdev_nr_bytes(bdev)) return -EINVAL; if (end < start) return -EINVAL; @@ -543,7 +543,6 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) struct block_device *bdev = I_BDEV(file->f_mapping->host); void __user *argp = (void __user *)arg; fmode_t mode = file->f_mode; - loff_t size; int ret; /* @@ -570,10 +569,9 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) return put_long(argp, (bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512); case BLKGETSIZE: - size = i_size_read(bdev->bd_inode); - if ((size >> 9) > ~0UL) + if (bdev_nr_sectors(bdev) > ~0UL) return -EFBIG; - return put_ulong(argp, size >> 9); + return put_ulong(argp, bdev_nr_sectors(bdev)); /* The data is compatible, but the command number is different */ case BLKBSZGET: /* get block device soft block size (cf. BLKSSZGET) */ @@ -581,7 +579,7 @@ long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) case BLKBSZSET: return blkdev_bszset(bdev, mode, argp); case BLKGETSIZE64: - return put_u64(argp, i_size_read(bdev->bd_inode)); + return put_u64(argp, bdev_nr_bytes(bdev)); /* Incompatible alignment on i386 */ case BLKTRACESETUP: @@ -615,7 +613,6 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) struct block_device *bdev = I_BDEV(file->f_mapping->host); struct gendisk *disk = bdev->bd_disk; fmode_t mode = file->f_mode; - loff_t size; /* * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have @@ -641,10 +638,9 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) return compat_put_long(argp, (bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512); case BLKGETSIZE: - size = i_size_read(bdev->bd_inode); - if ((size >> 9) > ~0UL) + if (bdev_nr_sectors(bdev) > ~0UL) return -EFBIG; - return compat_put_ulong(argp, size >> 9); + return compat_put_ulong(argp, bdev_nr_sectors(bdev)); /* The data is compatible, but the command number is different */ case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */ @@ -652,7 +648,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) case BLKBSZSET_32: return blkdev_bszset(bdev, mode, argp); case BLKGETSIZE64_32: - return put_u64(argp, i_size_read(bdev->bd_inode)); + return put_u64(argp, bdev_nr_bytes(bdev)); /* Incompatible alignment on i386 */ case BLKTRACESETUP32: |