f2fs: enable in-place-update for fdatasync
This patch enforces in-place-updates only when fdatasync is requested.
If we adopt this in-place-updates for the fdatasync, we can skip to write the
recovery information.
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9b888fb..9550135 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -127,7 +127,14 @@
return 0;
trace_f2fs_sync_file_enter(inode);
+
+ /* if fdatasync is triggered, let's do in-place-update */
+ if (datasync)
+ set_inode_flag(fi, FI_NEED_IPU);
+
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
+ if (datasync)
+ clear_inode_flag(fi, FI_NEED_IPU);
if (ret) {
trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
return ret;