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f2fs: fix to don't trigger writeback during recovery

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[ Upstream commit 64c74a7ab505ea40d1b3e5d02735ecab08ae1b14 ]

- 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@huawei.com>
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chao Yu 2018-05-26 18:03:34 +08:00 • committed by Greg Kroah-Hartman
parent 7a5468e02b
commit 52941707f7
1 changed files with 3 additions and 0 deletions
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3
fs/f2fs/segment.c
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@ -295,6 +295,9 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi)
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);