f2fs: merge flags in struct f2fs_sb_info

Currently, there are several variables with Boolean type as below:

struct f2fs_sb_info {
...
	int s_dirty;
	bool need_fsck;
	bool s_closing;
...
	bool por_doing;
...
}

For this there are some issues:
1. there are some space of f2fs_sb_info is wasted due to aligning after Boolean
   type variables by compiler.
2. if we continuously add new flag into f2fs_sb_info, structure will be messed
   up.

So in this patch, we try to:
1. switch s_dirty to Boolean type variable since it has two status 0/1.
2. merge s_dirty/need_fsck/s_closing/por_doing variables into s_flag.
3. introduce an enum type which can indicate different states of sbi.
4. use new introduced universal interfaces is_sbi_flag_set/{set,clear}_sbi_flag
   to operate flags for sbi.

After that, above issues will be fixed.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 13992f3c1445..5e1c0292250c 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -184,13 +184,13 @@ TRACE_EVENT(f2fs_sync_fs,
 
         TP_STRUCT__entry(
                 __field(dev_t,  dev)
-                __field(int,    dirty)
+                __field(bool,   dirty)
                 __field(int,    wait)
         ),
 
         TP_fast_assign(
                 __entry->dev    = sb->s_dev;
-                __entry->dirty  = F2FS_SB(sb)->s_dirty;
+                __entry->dirty  = is_sbi_flag_set(F2FS_SB(sb), SBI_IS_DIRTY);
                 __entry->wait   = wait;
         ),