linux-toradex.git/include/linux/f2fs_fs.h, branch v3.19.7

f2fs: remove unnecessary macro

2014-11-05T01:34:15+00:00

Let's remove unused macro.

Signed-off-by: Jaegeuk Kim

f2fs: revisit inline_data to avoid data races and potential bugs

2014-11-05T01:34:11+00:00

This patch simplifies the inline_data usage with the following rule.
1. inline_data is set during the file creation.
2. If new data is requested to be written ranges out of inline_data,
 f2fs converts that inode permanently.
3. There is no cases which converts non-inline_data inode to inline_data.
4. The inline_data flag should be changed under inode page lock.

Signed-off-by: Jaegeuk Kim

f2fs: add infra struct and helper for inline dir

2014-11-04T00:07:31+00:00

This patch defines macro/inline dentry structure, and adds some helpers for
inline dir infrastructure.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: use highmem for directory pages

2014-11-04T00:07:30+00:00

This patch fixes to use highmem for directory pages.

Signed-off-by: Jaegeuk Kim

f2fs: support large sector size

2014-09-23T18:10:20+00:00

Block size in f2fs is 4096 bytes, so theoretically, f2fs can support 4096 bytes
sector device at maximum. But now f2fs only support 512 bytes size sector, so
block device such as zRAM which uses page cache as its block storage space will
not be mounted successfully as mismatch between sector size of zRAM and sector
size of f2fs supported.

In this patch we support large sector size in f2fs, so block device with sector
size of 512/1024/2048/4096 bytes can be supported in f2fs.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: retain inconsistency information to initiate fsck.f2fs

2014-09-09T20:14:25+00:00

This patch adds sbi->need_fsck to conduct fsck.f2fs later.
This flag can only be removed by fsck.f2fs.

Signed-off-by: Jaegeuk Kim

f2fs: use macro for code readability

2014-08-22T20:56:47+00:00

This patch introduces DEF_NIDS_PER_INODE/GET_ORPHAN_BLOCKS/F2FS_CP_PACKS macro
instead of numbers in code for readability.

change log from v1:
 o fix typo pointed out by Jaegeuk Kim.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix incorrect calculation with total/free inode num

2014-08-21T20:57:06+00:00

Theoretically, our total inodes number is the same as total node number, but
there are three node ids are reserved in f2fs, they are 0, 1 (node nid), and 2
(meta nid), and they should never be used by user, so our total/free inode
number calculated in ->statfs is wrong.

This patch indroduces F2FS_RESERVED_NODE_NUM and then fixes this issue by
recalculating total/free inode number with the macro.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: large volume support

2014-06-04T04:34:30+00:00

f2fs's cp has one page which consists of struct f2fs_checkpoint and
version bitmap of sit and nat. To support lots of segments, we need more
blocks for sit bitmap. So let's arrange sit bitmap as following:
+-----------------+------------+
| f2fs_checkpoint | sit bitmap |
| + nat bitmap    |            |
+-----------------+------------+
0                 4k        N blocks

Signed-off-by: Changman Lee 
[Jaegeuk Kim: simple code change for readability]
Signed-off-by: Jaegeuk Kim

f2fs: avoid overflow when large directory feathure is enabled

2014-06-04T04:34:30+00:00

When large directory feathure is enable, We have one case which could cause
overflow in dir_buckets() as following:
special case: level + dir_level >= 32 and level < MAX_DIR_HASH_DEPTH / 2.

Here we define MAX_DIR_BUCKETS to limit the return value when the condition
could trigger potential overflow.

Changes from V1
 o modify description of calculation in f2fs.txt suggested by Changman Lee.

Suggested-by: Changman Lee 
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim