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f2fs: use blk_plug in all the possible paths

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This patch reverts 19a5f5e2ef (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>
This commit is contained in:
Jaegeuk Kim
2016-07-13 19:33:19 -07:00
parent 82e0a5aa5d
commit 9dfa1baff7
6 changed files with 29 additions and 2 deletions
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7
fs/f2fs/segment.c
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@@ -381,8 +381,13 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
excess_prefree_segs(sbi) ||
excess_dirty_nats(sbi) ||
(is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) {
if (test_opt(sbi, DATA_FLUSH))
if (test_opt(sbi, DATA_FLUSH)) {
struct blk_plug plug;
blk_start_plug(&plug);
sync_dirty_inodes(sbi, FILE_INODE);
blk_finish_plug(&plug);
}
f2fs_sync_fs(sbi->sb, true);
stat_inc_bg_cp_count(sbi->stat_info);
}