LU-9091 sysfs: use string helper like functions for sysfs

[fs/lustre-release.git] / lustre / osd-zfs / osd_lproc.c

diff --git a/lustre/osd-zfs/osd_lproc.c b/lustre/osd-zfs/osd_lproc.c
index 1516e58..7e742fd 100644 (file)
--- a/lustre/osd-zfs/osd_lproc.c
+++ b/lustre/osd-zfs/osd_lproc.c
@@ -387,6 +387,7 @@ zfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
        struct seq_file *m = file->private_data;
        struct dt_device *dt = m->private;
        struct osd_device *osd = osd_dt_dev(dt);
+       char kernbuf[22] = "";
        u64 val;
        int rc;
 
@@ -394,8 +395,15 @@ zfs_osd_readcache_seq_write(struct file *file, const char __user *buffer,
        if (unlikely(osd->od_os == NULL))
                return -EINPROGRESS;
 
-       rc = lprocfs_str_with_units_to_u64(buffer, count, &val, '1');
-       if (rc)
+       if (count >= sizeof(kernbuf))
+               return -EINVAL;
+
+       if (copy_from_user(kernbuf, buffer, count))
+               return -EFAULT;
+       kernbuf[count] = 0;
+
+       rc = sysfs_memparse(kernbuf, count, &val, "B");
+       if (rc < 0)
                return rc;
 
        osd->od_readcache_max_filesize = val > OSD_MAX_CACHE_SIZE ?