linux-kernel - [PATCH] f2fs: flush pending bios right away when error occurs

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Date:	Thu, 19 May 2016 09:43:45 -0700
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Cc:	Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH] f2fs: flush pending bios right away when error occurs

Given errors, this patch flushes pending bios as soon as possible.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/checkpoint.c | 7 +++++++
 fs/f2fs/f2fs.h       | 7 +------
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index cf79598..ecf7153 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -26,6 +26,13 @@
 static struct kmem_cache *ino_entry_slab;
 struct kmem_cache *inode_entry_slab;
 
+void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
+{
+	set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
+	sbi->sb->s_flags |= MS_RDONLY;
+	f2fs_flush_merged_bios(sbi);
+}
+
 /*
  * We guarantee no failure on the returned page.
  */
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 02f0656..6550263 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1698,12 +1698,6 @@ static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
 	return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
 }
 
-static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
-{
-	set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
-	sbi->sb->s_flags |= MS_RDONLY;
-}
-
 static inline bool is_dot_dotdot(const struct qstr *str)
 {
 	if (str->len == 1 && str->name[0] == '.')
@@ -1937,6 +1931,7 @@ void destroy_segment_manager_caches(void);
 /*
  * checkpoint.c
  */
+void f2fs_stop_checkpoint(struct f2fs_sb_info *);
 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
 struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
-- 
2.6.3