Btrfs: Support for online FS resize (grow and shrink)

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 7cab680418a1..3bbd7f665694 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -74,9 +74,9 @@ static match_table_t tokens = {
         {Opt_err, NULL}
 };
 
-static unsigned long parse_size(char *str)
+u64 btrfs_parse_size(char *str)
 {
-        unsigned long res;
+        u64 res;
         int mult = 1;
         char *end;
         char last;
@@ -150,7 +150,8 @@ static int parse_options (char * options,
                         if (info) {
                                 char *num = match_strdup(&args[0]);
                                 if (num) {
-                                        info->max_extent = parse_size(num);
+                                        info->max_extent =
+                                                btrfs_parse_size(num);
                                         kfree(num);
 
                                         info->max_extent = max_t(u64,