[PATCH 1/4] f2fs: introduce __wait_one_discard_bio

[Chao Yu]

In order to avoid copied codes.

Signed-off-by: Chao Yu <yuch...@huawei.com>
---
 fs/f2fs/segment.c | 33 +++++++++++++++++----------------
 1 file changed, 17 insertions(+), 16 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 4e073f65eef4..4ec40563e86d 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -995,6 +995,20 @@ static void __issue_discard_cmd(struct f2fs_sb_info *sbi, 
bool issue_cond)
        mutex_unlock(&dcc->cmd_lock);
 }
 
+static void __wait_one_discard_bio(struct f2fs_sb_info *sbi,
+                                                       struct discard_cmd *dc)
+{
+       struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
+
+       wait_for_completion_io(&dc->wait);
+       mutex_lock(&dcc->cmd_lock);
+       f2fs_bug_on(sbi, dc->state != D_DONE);
+       dc->ref--;
+       if (!dc->ref)
+               __remove_discard_cmd(sbi, dc);
+       mutex_unlock(&dcc->cmd_lock);
+}
+
 static void __wait_discard_cmd(struct f2fs_sb_info *sbi, bool wait_cond)
 {
        struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
@@ -1019,13 +1033,7 @@ static void __wait_discard_cmd(struct f2fs_sb_info *sbi, 
bool wait_cond)
        mutex_unlock(&dcc->cmd_lock);
 
        if (need_wait) {
-               wait_for_completion_io(&dc->wait);
-               mutex_lock(&dcc->cmd_lock);
-               f2fs_bug_on(sbi, dc->state != D_DONE);
-               dc->ref--;
-               if (!dc->ref)
-                       __remove_discard_cmd(sbi, dc);
-               mutex_unlock(&dcc->cmd_lock);
+               __wait_one_discard_bio(sbi, dc);
                goto next;
        }
 }
@@ -1049,15 +1057,8 @@ void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, 
block_t blkaddr)
        }
        mutex_unlock(&dcc->cmd_lock);
 
-       if (need_wait) {
-               wait_for_completion_io(&dc->wait);
-               mutex_lock(&dcc->cmd_lock);
-               f2fs_bug_on(sbi, dc->state != D_DONE);
-               dc->ref--;
-               if (!dc->ref)
-                       __remove_discard_cmd(sbi, dc);
-               mutex_unlock(&dcc->cmd_lock);
-       }
+       if (need_wait)
+               __wait_one_discard_bio(sbi, dc);
 }
 
 /* This comes from f2fs_put_super */
-- 
2.13.0.67.g10c78a162fa8