f2fs: use blk_plug in all the possible paths
This patch reverts 19a5f5e2ef37 (f2fs: drop any block plugging),
and adds blk_plug in write paths additionally.
The main reason is that blk_start_plug can be used to wake up from low-power
mode before submitting further bios.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index adfe47b..87a458f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1438,6 +1438,7 @@
{
struct inode *inode = mapping->host;
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct blk_plug plug;
int ret;
/* deal with chardevs and other special file */
@@ -1463,7 +1464,9 @@
trace_f2fs_writepages(mapping->host, wbc, DATA);
+ blk_start_plug(&plug);
ret = f2fs_write_cache_pages(mapping, wbc);
+ blk_finish_plug(&plug);
/*
* if some pages were truncated, we cannot guarantee its mapping->host
* to detect pending bios.
