Re: block allocation for ext2_mkdir

Rohit Sharma
2008-12-19T07:42:33Z

On Fri, Dec 19, 2008 at 4:09 AM, Jan Kara <jack@suse.cz> wrote:
>> On Fri, Dec 19, 2008 at 12:12 AM, Rohit Sharma <imreckless@gmail.com> wrote:
>> > How does ext2 allocate blocks for directory.
>> >
>> > ext2_mkdir calls ext2_make_empty
>> >
>> > ext2_make_empty calls __ext2_write_begin
>> >
>> > __ ext2_write_begin calls block_write_begin
>> >
>> > my query is that how does this function allocates blocks for directories. ??
>> >
>>
>> Does ext2 uses ext2_get_block to allocate blocks for both files and
>> directories. ??
> Yes, exactly. Ext2 (unlike ext3 or ext4) treats directories the same
> ways as ordinary files and thus ext2_get_block is used for block
> allocation.
>

Can i modify this function to restrict allocation of blocks
to a particular block group ?

Like i want that my abc.txt file should be in block group 5 suppose, then
what should i do?

> Honza
>
> --
> Jan Kara <jack@suse.cz>
> SuSE CR Labs
>