linux.git/include/linux/ext4_fs_i.h, branch master

ext4: move headers out of include/linux

2008-04-29T22:13:32+00:00

Move ext4 headers out of include/linux.  This is just the trivial move,
there's some more thing that could be done later. 

Signed-off-by: Christoph Hellwig 
Signed-off-by: Mingming Cao 
Signed-off-by: "Theodore Ts'o"

ext4: Add multi block allocator for ext4

2008-01-29T05:19:52+00:00

Signed-off-by: Alex Tomas 
Signed-off-by: Andreas Dilger 
Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Eric Sandeen 
Signed-off-by: "Theodore Ts'o"

ext4: Convert truncate_mutex to read write semaphore.

2008-01-29T04:58:26+00:00

We are currently taking the truncate_mutex for every read. This would have
performance impact on large CPU configuration. Convert the lock to read write
semaphore and take read lock when we are trying to read the file.

Signed-off-by: Aneesh Kumar K.V

ext4: Rename i_dir_acl to i_size_high

2008-01-29T04:58:27+00:00

Rename ext4_inode.i_dir_acl to i_size_high
drop ext4_inode_info.i_dir_acl as it is not used
Rename ext4_inode.i_size to ext4_inode.i_size_lo
Add helper function for accessing the ext4_inode combined i_size.

Signed-off-by: Aneesh Kumar K.V

ext4: add ext4_group_t, and change all group variables to this type.

2008-01-29T04:58:27+00:00

In many places variables for block group are of type int, which limits the
maximum number of block groups to 2^31.  Each block group can have up to
2^15 blocks, with a 4K block size,  and the max filesystem size is limited to
2^31 * (2^15 * 2^12) = 2^58  -- or 256 PB

This patch introduces a new type ext4_group_t, of type unsigned long, to
represent block group numbers in ext4.
All occurrences of block group variables are converted to type ext4_group_t.

Signed-off-by: Avantika Mathur

ext4: Introduce ext4_lblk_t

2008-01-29T04:58:27+00:00

This patch adds a new data type ext4_lblk_t to represent
the logical file blocks.

This is the preparatory patch to support large files in ext4
The follow up patch with convert the ext4_inode i_blocks to
represent the number of blocks in file system block size. This
changes makes it possible to have a block number 2**32 -1 which
will result in overflow if the block number is represented by
signed long. This patch convert all the block number to type
ext4_lblk_t which is typedef to __u32

Also remove dead code ext4_ext_walk_space

Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Mingming Cao 
Signed-off-by: Eric Sandeen

ext4: Remove (partial, never completed) fragment support

2007-10-17T22:49:59+00:00

Fragment support in ext2/3/4 was never implemented, and it probably will
never be implemented.   So remove it from ext4.

Signed-off-by: Coly Li 
Acked-by: Andreas Dilger 
Signed-off-by: Andrew Morton 
Signed-off-by: "Theodore Ts'o"

ext4: Add nanosecond timestamps

2007-07-18T13:15:20+00:00

This patch adds nanosecond timestamps for ext4. This involves adding
*time_extra fields to the ext4_inode to extend the timestamps to
64-bits.  Creation time is also added by this patch.

These extended fields will fit into an inode if the filesystem was
formatted with large inodes (-I 256 or larger) and there are currently
no EAs consuming all of the available space. For new inodes we always
reserve enough space for the kernel's known extended fields, but for
inodes created with an old kernel this might not have been the case. So
this patch also adds the EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE feature
flag(ro-compat so that older kernels can't create inodes with a smaller
extra_isize). which indicates if the fields fitting inside
s_min_extra_isize are available or not.  If the expansion of inodes if
unsuccessful then this feature will be disabled.  This feature is only
enabled if requested by the sysadmin.

None of the extended inode fields is critical for correct filesystem
operation.

Signed-off-by: Andreas Dilger 
Signed-off-by: Kalpak Shah 
Signed-off-by: Eric Sandeen 
Signed-off-by: Dave Kleikamp 
Signed-off-by: Mingming Cao 
Signed-off-by: "Theodore Ts'o"

EXT4: Fix whitespace

2007-05-31T20:20:14+00:00

Replace a lot of spaces with tabs

Signed-off-by: Dave Kleikamp 
Signed-off-by: "Theodore Ts'o"

Fix occurrences of "the the "

2007-05-09T06:57:56+00:00

Signed-off-by: Michael Opdenacker 
Signed-off-by: Adrian Bunk