diff options
| -rw-r--r-- | fs/f2fs/super.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 9a874b4d1501..206d03c82d96 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3359,6 +3359,14 @@ loff_t max_file_blocks(struct inode *inode) leaf_count *= NIDS_PER_BLOCK; result += leaf_count; + /* + * For compatibility with FSCRYPT_POLICY_FLAG_IV_INO_LBLK_{64,32} with + * a 4K crypto data unit, we must restrict the max filesize to what can + * fit within U32_MAX + 1 data units. + */ + + result = min(result, (((loff_t)U32_MAX + 1) * 4096) >> F2FS_BLKSIZE_BITS); + return result; } |