diff options
| author | Christoph Hellwig <[email protected]> | 2021-10-18 12:11:23 +0200 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-10-18 14:43:23 -0600 |
| commit | be9a7b3e15916fd3710bfd383e8ecffc0416e919 (patch) | |
| tree | e28d1d28f1cbdbfd6c71bab466ec13af5673f434 | |
| parent | 1d5dd3b9164c77816a679d39dbd28787d3f22a3a (diff) | |
squashfs: use bdev_nr_bytes instead of open coding it
Use the proper helper to read the block device size.
Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Acked-by: Phillip Lougher <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
| -rw-r--r-- | fs/squashfs/super.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index 60d6951915f4..bb44ff4c5cc6 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -16,6 +16,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/blkdev.h> #include <linux/fs.h> #include <linux/fs_context.h> #include <linux/fs_parser.h> @@ -179,8 +180,8 @@ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc) /* Check the filesystem does not extend beyond the end of the block device */ msblk->bytes_used = le64_to_cpu(sblk->bytes_used); - if (msblk->bytes_used < 0 || msblk->bytes_used > - i_size_read(sb->s_bdev->bd_inode)) + if (msblk->bytes_used < 0 || + msblk->bytes_used > bdev_nr_bytes(sb->s_bdev)) goto failed_mount; /* Check block size for sanity */ |