[PATCH 1/2] f2fs: fix to don't trigger writeback during recovery

From: Chao Yu
Date: Sat May 26 2018 - 06:04:08 EST


- f2fs_fill_super
- recover_fsync_data
- recover_data
- del_fsync_inode
- iput
- iput_final
- write_inode_now
- f2fs_write_inode
- f2fs_balance_fs
- f2fs_balance_fs_bg
- sync_dirty_inodes

With data_flush mount option, during recovery, in order to avoid entering
above writeback flow, let's detect recovery status and do skip in
f2fs_balance_fs_bg.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
Signed-off-by: Yunlei He <heyunlei@xxxxxxxxxx>
---
fs/f2fs/segment.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 7dc59ae05e94..76947f2856bf 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -486,6 +486,9 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need)

void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
{
+ if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
+ return;
+
/* try to shrink extent cache when there is no enough memory */
if (!available_free_memory(sbi, EXTENT_CACHE))
f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER);
--
2.17.0.391.g1f1cddd558b5