f2fs: don't need to collect dirty sit entries and flush journal when there's no dirty...

 Don't need to collect dirty sit entries and flush sit journal to sit
 entries when there's no dirty sit entries. This patch check dirty_sentries
 earlier just like flush_nat_entries.

Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 29c04edcb84302801d3c91215f42ef9b12734ae7..1e909340842a62383727e2e17e081ada6278a2c7 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1733,6 +1733,9 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
        mutex_lock(&curseg->curseg_mutex);
        mutex_lock(&sit_i->sentry_lock);
 
+       if (!sit_i->dirty_sentries)
+               goto out;
+
        /*
         * add and account sit entries of dirty bitmap in sit entry
         * set temporarily
@@ -1747,9 +1750,6 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
        if (!__has_cursum_space(sum, sit_i->dirty_sentries, SIT_JOURNAL))
                remove_sits_in_journal(sbi);
 
-       if (!sit_i->dirty_sentries)
-               goto out;
-
        /*
         * there are two steps to flush sit entries:
         * #1, flush sit entries to journal in current cold data summary block.