diff options
Diffstat (limited to 'kernel/fs/ext2.c')
| -rw-r--r-- | kernel/fs/ext2.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/fs/ext2.c b/kernel/fs/ext2.c index ce1c6dd..1eeafce 100644 --- a/kernel/fs/ext2.c +++ b/kernel/fs/ext2.c @@ -559,10 +559,12 @@ int write_inode(int inode_num, u8 *data, u64 size, u64 offset, u64 *file_size, u32 num_blocks_required = BLOCKS_REQUIRED(fsize, block_byte_size); u32 delta = num_blocks_required - num_blocks_used; - int blocks[delta]; - get_free_blocks(1, blocks, delta); - for (u32 i = num_blocks_used; i < num_blocks_required; i++) { - assert(ext2_allocate_block(inode, i, blocks[i - num_blocks_used])); + if (delta > 0) { + int blocks[delta]; + get_free_blocks(1, blocks, delta); + for (u32 i = num_blocks_used; i < num_blocks_required; i++) { + assert(ext2_allocate_block(inode, i, blocks[i - num_blocks_used])); + } } inode->num_disk_sectors = |