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SubjectRe: [PATCH v1] fs/jfs: Switch to use new generic UUID API
On Mon, Jan 21, 2019 at 10:19:15AM -0600, Dave Kleikamp wrote:
> diff --git a/fs/jfs/super.c b/fs/jfs/super.c
> index 65d8fc87ab11..c15ff56a8516 100644
> --- a/fs/jfs/super.c
> +++ b/fs/jfs/super.c
> @@ -174,9 +174,11 @@ static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf)
> buf->f_files = maxinodes;
> buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) -
> atomic_read(&imap->im_numfree));
> - buf->f_fsid.val[0] = (u32)crc32_le(0, sbi->uuid, sizeof(sbi->uuid)/2);
> - buf->f_fsid.val[1] = (u32)crc32_le(0, sbi->uuid + sizeof(sbi->uuid)/2,
> - sizeof(sbi->uuid)/2);
> + buf->f_fsid.val[0] = crc32_le(0, (char *)&sbi->uuid,
> + sizeof(sbi->uuid)/2);
> + buf->f_fsid.val[1] = crc32_le(0,
> + (char *)&sbi->uuid + sizeof(sbi->uuid)/2,
> + sizeof(sbi->uuid)/2);

I'd really love to see a little helper to calculate the fsid, and
a comment on that function documenting the design decision behind it.

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