Commit c0a67916 authored by Ian Kent's avatar Ian Kent Committed by Darrick J. Wong
Browse files

xfs: refactor suffix_kstrtoint() 



The mount-api doesn't have a "human unit" parse type yet so the options
that have values like "10k" etc. still need to be converted by the fs.

But the value comes to the fs as a string (not a substring_t type) so
there's a need to change the conversion function to take a character
string instead.

When xfs is switched to use the new mount-api match_kstrtoint() will no
longer be used and will be removed.

Signed-off-by: default avatarIan Kent <raven@themaw.net>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
parent 2c6eba31

fs/xfs/xfs_super.c

+29 −9
Original line number Diff line number Diff line
@@ -108,14 +108,17 @@ static const match_table_t tokens = { 
};





STATIC int

suffix_kstrtoint(const substring_t *s, unsigned int base, int *res)

static int

suffix_kstrtoint(

	const char	*s,

	unsigned int	base,

	int		*res)

{

	int		last, shift_left_factor = 0, _res;

	char		*value;

	int		ret = 0;



	value = match_strdup(s);

	value = kstrdup(s, GFP_KERNEL);

	if (!value)

		return -ENOMEM;
@@ -140,6 +143,23 @@ suffix_kstrtoint(const substring_t *s, unsigned int base, int *res) 
	return ret;

}



static int

match_kstrtoint(

	const substring_t	*s,

	unsigned int		base,

	int			*res)

{

	const char		*value;

	int			ret;



	value = match_strdup(s);

	if (!value)

		return -ENOMEM;

	ret = suffix_kstrtoint(value, base, res);

	kfree(value);

	return ret;

}



/*

 * This function fills in xfs_mount_t fields based on mount args.

 * Note: the superblock has _not_ yet been read in.
@@ -151,7 +171,7 @@ suffix_kstrtoint(const substring_t *s, unsigned int base, int *res) 
 * path, and we don't want this to have any side effects at remount time.

 * Today this function does not change *sb, but just to future-proof...

 */

STATIC int

static int

xfs_parseargs(

	struct xfs_mount	*mp,

	char			*options)
@@ -194,7 +214,7 @@ xfs_parseargs( 
				return -EINVAL;

			break;

		case Opt_logbsize:

			if (suffix_kstrtoint(args, 10, &mp->m_logbsize))

			if (match_kstrtoint(args, 10, &mp->m_logbsize))

				return -EINVAL;

			break;

		case Opt_logdev:
@@ -210,7 +230,7 @@ xfs_parseargs( 
				return -ENOMEM;

			break;

		case Opt_allocsize:

			if (suffix_kstrtoint(args, 10, &size))

			if (match_kstrtoint(args, 10, &size))

				return -EINVAL;

			mp->m_allocsize_log = ffs(size) - 1;

			mp->m_flags |= XFS_MOUNT_ALLOCSIZE;

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