diff options
Diffstat (limited to 'fs/fat')
| -rw-r--r-- | fs/fat/fat_write.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index 88dd4959cc..98b88add83 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -13,6 +13,8 @@ #include <asm/byteorder.h> #include <part.h> #include <linux/ctype.h> +#include <div64.h> +#include <linux/math64.h> #include "fat.c" static void uppercase(char *str, int len) @@ -770,7 +772,7 @@ static void fill_dentry(fsdata *mydata, dir_entry *dentptr, */ static int check_overflow(fsdata *mydata, __u32 clustnum, loff_t size) { - __u32 startsect, sect_num; + __u32 startsect, sect_num, offset; if (clustnum > 0) { startsect = mydata->data_begin + @@ -779,13 +781,13 @@ static int check_overflow(fsdata *mydata, __u32 clustnum, loff_t size) startsect = mydata->rootdir_sect; } - sect_num = size / mydata->sect_size; - if (size % mydata->sect_size) + sect_num = div_u64_rem(size, mydata->sect_size, &offset); + + if (offset != 0) sect_num++; if (startsect + sect_num > cur_part_info.start + total_sector) return -1; - return 0; } |