[PATCH v6 08/12] xfs: refactor suffix_kstrtoint()

Ian Kent
2019-10-16T00:41:31Z

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: Ian Kent <raven@themaw.net>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
fs/xfs/xfs_super.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 1f706cbf9624..e54348be2a17 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -110,13 +110,13 @@ static const match_table_t tokens = {

STATIC int
-suffix_kstrtoint(const substring_t *s, unsigned int base, int *res)
+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;

@@ -141,6 +141,20 @@ 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.
@@ -203,7 +217,7 @@ 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:
@@ -219,7 +233,7 @@ xfs_parseargs(
return -ENOMEM;
break;
case Opt_allocsize:
- if (suffix_kstrtoint(args, 10, &iosize))
+ if (match_kstrtoint(args, 10, &iosize))
return -EINVAL;
iosizelog = ffs(iosize) - 1;
break;