ToDo/Notes:
- Find and fix bugs.
- - Either invalidate quotas or update the quota charges on NTFS 3.x
- volumes with quota tracking enabled ($Quota).
- Checkpoint or disable the user space journal ($UsnJrnl).
- - Implement aops->set_page_dirty() in order to take control of buffer
- dirtying. Not having it means if page_has_buffers(), all buffers
- will be dirtied with the page. And if not they won't be. That is
- fine for the moment but will break once we enable metadata updates.
- For now just always using __set_page_dirty_nobuffers() for metadata
- pages as nothing can dirty a page other than ourselves. Should this
- change, we will really need to roll our own ->set_page_dirty().
- Implement sops->dirty_inode() to implement {a,m,c}time updates and
such things. This should probably just flag the ntfs inode such that
sops->write_inode(), i.e. ntfs_write_inode(), will copy the times
- Enable the code for setting the NT4 compatibility flag when we start
making NTFS 1.2 specific modifications.
+2.1.15 - Invalidate quotas when (re)mounting read-write.
+
+ - Add new element itype.index.collation_rule to the ntfs inode
+ structure and set it appropriately in ntfs_read_locked_inode().
+ - Implement a new inode type "index" to allow efficient access to the
+ indices found in various system files and adapt inode handling
+ accordingly (fs/ntfs/inode.[hc]). An index inode is essentially an
+ attribute inode (NInoAttr() is true) with an attribute type of
+ AT_INDEX_ALLOCATION. As such, it is no longer allowed to call
+ ntfs_attr_iget() with an attribute type of AT_INDEX_ALLOCATION as
+ there would be no way to distinguish between normal attribute inodes
+ and index inodes. The function to obtain an index inode is
+ ntfs_index_iget() and it uses the helper function
+ ntfs_read_locked_index_inode(). Note, we do not overload
+ ntfs_attr_iget() as indices consist of multiple attributes so using
+ ntfs_attr_iget() to obtain an index inode would be confusing.
+ - Ensure that there is no overflow when doing page->index <<
+ PAGE_CACHE_SHIFT by casting page->index to s64 in fs/ntfs/aops.c.
+ - Use atomic kmap instead of kmap() in fs/ntfs/aops.c::ntfs_read_page()
+ and ntfs_read_block().
+ - Use case sensitive attribute lookups instead of case insensitive ones.
+ - Lock all page cache pages belonging to mst protected attributes while
+ accessing them to ensure we never see corrupt data while the page is
+ under writeout.
+ - Add framework for generic ntfs collation (fs/ntfs/collation.[hc]).
+ We have ntfs_is_collation_rule_supported() to check if the collation
+ rule you want to use is supported and ntfs_collation() which actually
+ collates two data items. We currently only support COLLATION_BINARY
+ and COLLATION_NTOFS_ULONG but support for other collation rules will
+ be added as the need arises.
+ - Add a new type, ntfs_index_context, to allow retrieval of an index
+ entry using the corresponding index key. To get an index context,
+ use ntfs_index_ctx_get() and to release it, use ntfs_index_ctx_put().
+ This also adds a new slab cache for the index contexts. To lookup a
+ key in an index inode, use ntfs_index_lookup(). After modifying an
+ index entry, call ntfs_index_entry_flush_dcache_page() followed by
+ ntfs_index_entry_mark_dirty() to ensure the changes are written out
+ to disk. For details see fs/ntfs/index.[hc]. Note, at present, if
+ an index entry is in the index allocation attribute rather than the
+ index root attribute it will not be written out (you will get a
+ warning message about discarded changes instead).
+ - Load the quota file ($Quota) and check if quota tracking is enabled
+ and if so, mark the quotas out of date. This causes windows to
+ rescan the volume on boot and update all quota entries.
+ - Add a set_page_dirty address space operation for ntfs_m[fs]t_aops.
+ It is simply set to __set_page_dirty_nobuffers() to make sure that
+ running set_page_dirty() on a page containing mft/ntfs records will
+ not affect the dirty state of the page buffers.
+ - Add fs/ntfs/index.c::__ntfs_index_entry_mark_dirty() which sets all
+ buffers that are inside the ntfs record in the page dirty after which
+ it sets the page dirty. This allows ->writepage to only write the
+ dirty index records rather than having to write all the records in
+ the page. Modify fs/ntfs/index.h::ntfs_index_entry_mark_dirty() to
+ use this rather than __set_page_dirty_nobuffers().
+ - Implement fs/ntfs/aops.c::ntfs_write_mst_block() which enables the
+ writing of page cache pages belonging to mst protected attributes
+ like the index allocation attribute in directory indices and other
+ indices like $Quota/$Q, etc. This means that the quota is now marked
+ out of date on all volumes rather than only on ones where the quota
+ defaults entry is in the index root attribute of the $Quota/$Q index.
+
2.1.14 - Fix an NFSd caused deadlock reported by several users.
- Modify fs/ntfs/ntfs_readdir() to copy the index root attribute value
git://git.onelab.eu / linux-2.6.git / blobdiff