Re: [PATCH 4/4] fix biosize option

[Christoph Hellwig <hch@lst.de>]

ping?

On Sun, May 25, 2008 at 09:07:54PM +0200, Christoph Hellwig wrote:
> iosizelog shouldn't be the same as iosize but the logarithm of it.  Then
> again the current biosize option doesn't make much sense to me as it
> doesn't set the preferred I/O size as mentioned in the comment next to
> it but rather the allocation size and thus is identical to the allocsize
> option (except for the missing logarithm).  It's also not documented in
> Documentation/filesystems/xfs.txt or the mount manpage.
> 
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> 
> Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_super.c
> ===================================================================
> --- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_super.c	2008-05-25 20:59:04.000000000 +0200
> +++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_super.c	2008-05-25 20:59:38.000000000 +0200
> @@ -252,7 +252,7 @@ xfs_parseargs(
>  				return EINVAL;
>  			}
>  			iosize = simple_strtoul(value, &eov, 10);
> -			iosizelog = (uint8_t) iosize;
> +			iosizelog = ffs(iosize) - 1;
>  		} else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
>  			if (!value || !*value) {
>  				cmn_err(CE_WARN,
---end quoted text---