linux-toradex.git/fs/f2fs/inline.c, branch v3.18.13

f2fs: support atomic writes

2014-10-07T00:39:50+00:00

This patch introduces a very limited functionality for atomic write support.
In order to support atomic write, this patch adds two ioctls:
 o F2FS_IOC_START_ATOMIC_WRITE
 o F2FS_IOC_COMMIT_ATOMIC_WRITE

The database engine should be aware of the following sequence.
1. open
 -> ioctl(F2FS_IOC_START_ATOMIC_WRITE);
2. writes
  : all the written data will be treated as atomic pages.
3. commit
 -> ioctl(F2FS_IOC_COMMIT_ATOMIC_WRITE);
  : this flushes all the data blocks to the disk, which will be shown all or
  nothing by f2fs recovery procedure.
4. repeat to #2.

The IO pattens should be:

  ,- START_ATOMIC_WRITE                  ,- COMMIT_ATOMIC_WRITE
 CP | D D D D D D | FSYNC | D D D D | FSYNC ...
                      `- COMMIT_ATOMIC_WRITE

Signed-off-by: Jaegeuk Kim

f2fs: need fsck.f2fs when f2fs_bug_on is triggered

2014-09-09T20:15:02+00:00

If any f2fs_bug_on is triggered, fsck.f2fs is needed.

Signed-off-by: Jaegeuk Kim

f2fs: introduce F2FS_I_SB, F2FS_M_SB, and F2FS_P_SB

2014-09-04T00:37:13+00:00

This patch adds three inline functions to clean up dirty casting codes.

Signed-off-by: Jaegeuk Kim

f2fs: skip if inline_data was converted already

2014-08-21T20:57:03+00:00

This patch checks inline_data one more time under the inode page lock whether
its inline_data is converted or not.

Signed-off-by: Jaegeuk Kim

f2fs: avoid double lock in truncate_blocks

2014-08-21T20:57:01+00:00

The init_inode_metadata calls truncate_blocks when error is occurred.
The callers holds f2fs_lock_op, so we should not call it again in
truncate_blocks.

Signed-off-by: Jaegeuk Kim

f2fs: make clear on test condition and return types

2014-08-19T17:01:33+00:00

This patch adds a parentheses to make clear for condition check.
And also it changes the return type for better meanings.

Signed-off-by: Jaegeuk Kim

f2fs: should convert inline_data during the mkwrite

2014-08-19T17:01:33+00:00

If mkwrite is called to an inode having inline_data, it can overwrite the data
index space as NEW_ADDR. (e.g., the first 4 bytes are coincidently zero)

Signed-off-by: Jaegeuk Kim

f2fs: add info of appended or updated data writes

2014-07-29T14:46:11+00:00

This patch introduces a inode number list in which represents inodes having
appended data writes or updated data writes after last checkpoint.
This will be used at fsync to determine whether the recovery information
should be written or not.

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

f2fs: avoid grab_cache_page_write_begin for data pages

2014-05-07T01:21:58+00:00

We don't need to wait on page writeback for these cases.

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

f2fs: split grab_cache_page and wait_on_page_writeback for node pages

2014-05-07T01:21:58+00:00

This patch splits grab_cache_page_write_begin into grab_cache_page and
wait_on_page_writeback for node pages.

This patch intends to enhance the latency to get node pages by alleviating
unnecessary wait_on_page_writeback.

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