Re: block allocation for ext2_mkdir

Sandeep K Sinha
2008-12-19T09:21:49Z

On Fri, Dec 19, 2008 at 1:12 PM, Rohit Sharma <imreckless@gmail.com> wrote:
> 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 ?

Did you forget to mention "ONLY FOR YOUR PERSONAL USE, IN YOUR PRIVATE KERNEL".

>
> 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
>>
>
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>

--
Regards,
Sandeep.

"To learn is to change. Education is a process that changes the learner."