On 2017/8/8 18:27, sunqiuyang wrote:
From: Qiuyang Sun <sunqiuyang@xxxxxxxxxx>
Currently, the two flags F2FS_GET_BLOCK_[READ|DIO] are totally equivalent
and can be used interchangably in all scenarios they are involved in. This
patch deletes F2FS_GET_BLOCK_READ and uses F2FS_GET_BLOCK_DIO instead.
Seems weird from readability point of view, so how about keeping
F2FS_GET_BLOCK_READ alive but sharing defined value with F2FS_GET_BLOCK_DIO?
enum {
F2FS_GET_BLOCK_DIO,
F2FS_GET_BLOCK_READ = F2FS_GET_BLOCK_DIO,
F2FS_GET_BLOCK_FIEMAP,
...
}
Thanks,
How about renaming both of them F2FS_GET_BLOCK_DEFAULT? Actually neither
READ nor DIO is explicitly referenced in f2fs_map_blocks(); it is just
the "default" case. We have no reason to limit the use of this flag to
"read" or "direct IO" only.
Thanks,
Signed-off-by: Qiuyang Sun <sunqiuyang@xxxxxxxxxx>
---
fs/f2fs/data.c | 2 +-
fs/f2fs/f2fs.h | 1 -
fs/f2fs/file.c | 4 ++--
3 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index c43262d..e0a59bf 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1244,7 +1244,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
map.m_len = last_block - block_in_file;
if (f2fs_map_blocks(inode, &map, 0,
- F2FS_GET_BLOCK_READ))
+ F2FS_GET_BLOCK_DIO))
goto set_error_page;
}
got_it:
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cea329f..0593ca7 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -514,7 +514,6 @@ struct f2fs_map_blocks {
};
/* for flag in get_data_block */
-#define F2FS_GET_BLOCK_READ 0
#define F2FS_GET_BLOCK_DIO 1
#define F2FS_GET_BLOCK_FIEMAP 2
#define F2FS_GET_BLOCK_BMAP 3
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index e2b33b8..8271cb5 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2074,7 +2074,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
*/
while (map.m_lblk < pg_end) {
map.m_len = pg_end - map.m_lblk;
- err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
if (err)
goto out;
@@ -2116,7 +2116,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
do_map:
map.m_len = pg_end - map.m_lblk;
- err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
+ err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DIO);
if (err)
goto clear_out;
.
