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| author | Zheng Liu <wenqing.lz@taobao.com> | 2013-08-28 22:47:06 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-08-28 22:47:06 +0400 |
| commit | d7b2a00c2e2eedf460ce2a15237f28de40412d86 (patch) | |
| tree | 5a6b062e0973a84cab9b66f75a7a573361ccdf69 /fs/ext4/ext4.h | |
| parent | 70261f568f3c08552f034742e3d5cb78c3877766 (diff) | |
| download | linux-d7b2a00c2e2eedf460ce2a15237f28de40412d86.tar.xz | |
ext4: isolate ext4_extents.h file
After applied the commit (4a092d73), we have reduced the number of
source files that need to #include ext4_extents.h. But we can do
better.
This commit defines ext4_zeroout_es() in extents.c and move
EXT_MAX_BLOCKS into ext4.h in order not to include ext4_extents.h in
indirect.c and ioctl.c. Meanwhile we just need to include this file in
extent_status.c when ES_AGGRESSIVE_TEST is defined. Otherwise, this
commit removes a duplicated declaration in trace/events/ext4.h.
After applied this patch, we just need to include ext4_extents.h file
in {super,migrate,move_extents,extents}.c, and it is easy for us to
define a new extent disk layout.
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 3dbc56eb4849..28896655ad41 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2686,6 +2686,12 @@ extern int ext4_check_blockref(const char *, unsigned int, struct ext4_ext_path; struct ext4_extent; +/* + * Maximum number of logical blocks in a file; ext4_extent's ee_block is + * __le32. + */ +#define EXT_MAX_BLOCKS 0xffffffff + extern int ext4_ext_tree_init(handle_t *handle, struct inode *); extern int ext4_ext_writepage_trans_blocks(struct inode *, int); extern int ext4_ext_index_trans_blocks(struct inode *inode, int extents); |