[Fwd: vma list in struct address_space]

Luciano A. Stertz
2004-07-21T16:42:01Z

Hi,
I sent this message to kernelnewbies but receive no replay. May you
please help me?

Thanks,
Luciano

====================================================

I have a doubt about the address_space struct.
I understand that struct address_space contains lists of the virtual
memory area instances that refers to the inode controlled by this
address_space.
Up to kernel 2.6.6, it was clear to me from the struct declaration that
there were two lists, i_mmap was the list of private (created with
MAP_PRIVATE) mappings and i_mmap_shared the list of shared (created with
MAP_SHARED).
On kernel 2.6.7, however, I couldn't undestand the lists:

struct prio_tree_root i_mmap; /* tree of private
mappings */
struct list_head i_mmap_nonlinear;/*list VM_NONLINEAR
mappings */

i_mmap seems to be still listing private mappings, but i_mmap_shared
was removed and i_mmap_nonlinear added.
If I create a shared linear mapping, will it be kept in any of these lists?
Or maybe the i_mmap comment is misleading, and now i_mmap maps linear vmas?

TIA,
Luciano Stertz

--
Luciano A. Stertz
luciano@tteng.com.br
T&T Engenheiros Associados Ltda
http://www.tteng.com.br
Fone/Fax (51) 3224 8425

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--
Luciano A. Stertz
luciano@tteng.com.br
T&T Engenheiros Associados Ltda
http://www.tteng.com.br
Fone/Fax (51) 3224 8425
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