[PATCH] xfs: collapse allocsize and biosize mount option handling

[Eric Sandeen <sandeen@xxxxxxxxxx>]

The allocsize and biosize mount options are handled identically,
other than allocsize accepting suffixes.  suffix_kstrtoint handles
bare numbers just fine too, so these can be collapsed.

(In other news, though, maybe biosize needs to be deprecated?
XFS_IOC_SETBIOSIZE and XFS_IOC_GETBIOSIZE are deprecated, and
"biosize" was removed from Documentation/ back in 2005 ...)

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 1fb1656..4bd6c0d 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -261,16 +261,8 @@ xfs_parseargs(
                        mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
                        if (!mp->m_rtname)
                                return -ENOMEM;
-               } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
-                       if (!value || !*value) {
-                               xfs_warn(mp, "%s option requires an argument",
-                                       this_char);
-                               return -EINVAL;
-                       }
-                       if (kstrtoint(value, 10, &iosize))
-                               return -EINVAL;
-                       iosizelog = ffs(iosize) - 1;
-               } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
+               } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE) ||
+                          !strcmp(this_char, MNTOPT_BIOSIZE)) {
                        if (!value || !*value) {
                                xfs_warn(mp, "%s option requires an argument",
                                        this_char);