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Date: Sun, 27 Apr 2014 14:21:33 +0800
From: Gu Zheng <guz.fnst@...fujitsu.com>
To: Kim <jaegeuk.kim@...sung.com>
CC: f2fs <linux-f2fs-devel@...ts.sourceforge.net>,
fsdevel <linux-fsdevel@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] f2fs: introduce help function {create,destroy}_flush_cmd_control
Introduce help function {create,destroy}_flush_cmd_control to clean up
the create/destory flush merge operation.
Signed-off-by: Gu Zheng <guz.fnst@...fujitsu.com>
---
fs/f2fs/f2fs.h | 3 +-
fs/f2fs/segment.c | 60 +++++++++++++++++++++++++++++++++-------------------
fs/f2fs/super.c | 27 ++---------------------
3 files changed, 43 insertions(+), 47 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index fa0ec81..1ca958a 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1184,8 +1184,9 @@ void destroy_node_manager_caches(void);
*/
void f2fs_balance_fs(struct f2fs_sb_info *);
void f2fs_balance_fs_bg(struct f2fs_sb_info *);
-int issue_flush_thread(void *);
int f2fs_issue_flush(struct f2fs_sb_info *);
+int create_flush_cmd_control(struct f2fs_sb_info *);
+void destroy_flush_cmd_control(struct f2fs_sb_info *);
void invalidate_blocks(struct f2fs_sb_info *, block_t);
void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
void clear_prefree_segments(struct f2fs_sb_info *);
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 86979d7d..6f19f8c 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -197,7 +197,7 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
f2fs_sync_fs(sbi->sb, true);
}
-int issue_flush_thread(void *data)
+static int issue_flush_thread(void *data)
{
struct f2fs_sb_info *sbi = data;
struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info;
@@ -264,6 +264,40 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi)
return ret;
}
+int create_flush_cmd_control(struct f2fs_sb_info *sbi)
+{
+ dev_t dev = sbi->sb->s_bdev->bd_dev;
+ struct flush_cmd_control *fcc;
+ int err = 0;
+
+ fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL);
+ if (!fcc)
+ return -ENOMEM;
+ spin_lock_init(&fcc->issue_lock);
+ init_waitqueue_head(&fcc->flush_wait_queue);
+ fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
+ "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
+ if (IS_ERR(fcc->f2fs_issue_flush)) {
+ err = PTR_ERR(fcc->f2fs_issue_flush);
+ kfree(fcc);
+ return err;
+ }
+ sbi->sm_info->cmd_control_info = fcc;
+
+ return err;
+}
+
+void destroy_flush_cmd_control(struct f2fs_sb_info *sbi)
+{
+ struct flush_cmd_control *fcc =
+ sbi->sm_info->cmd_control_info;
+
+ if (fcc && fcc->f2fs_issue_flush)
+ kthread_stop(fcc->f2fs_issue_flush);
+ kfree(fcc);
+ sbi->sm_info->cmd_control_info = NULL;
+}
+
static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,
enum dirty_type dirty_type)
{
@@ -1845,7 +1879,6 @@ int build_segment_manager(struct f2fs_sb_info *sbi)
{
struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
- dev_t dev = sbi->sb->s_bdev->bd_dev;
struct f2fs_sm_info *sm_info;
int err;
@@ -1874,22 +1907,9 @@ int build_segment_manager(struct f2fs_sb_info *sbi)
sm_info->max_discards = 0;
if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) {
- struct flush_cmd_control *fcc =
- kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL);
-
- if (!fcc)
- return -ENOMEM;
- spin_lock_init(&fcc->issue_lock);
- init_waitqueue_head(&fcc->flush_wait_queue);
-
- fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
- "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
- if (IS_ERR(fcc->f2fs_issue_flush)) {
- err = PTR_ERR(fcc->f2fs_issue_flush);
- kfree(fcc);
+ err = create_flush_cmd_control(sbi);
+ if (err)
return err;
- }
- sm_info->cmd_control_info = fcc;
}
err = build_sit_info(sbi);
@@ -1998,14 +2018,10 @@ static void destroy_sit_info(struct f2fs_sb_info *sbi)
void destroy_segment_manager(struct f2fs_sb_info *sbi)
{
struct f2fs_sm_info *sm_info = SM_I(sbi);
- struct flush_cmd_control *fcc;
if (!sm_info)
return;
- fcc = sm_info->cmd_control_info;
- if (fcc && fcc->f2fs_issue_flush)
- kthread_stop(fcc->f2fs_issue_flush);
- kfree(fcc);
+ destroy_flush_cmd_control(sbi);
destroy_dirty_segmap(sbi);
destroy_curseg(sbi);
destroy_free_segmap(sbi);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 98832ef..b2b1863 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -641,33 +641,12 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
* or if flush_merge is not passed in mount option.
*/
if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
- struct flush_cmd_control *fcc =
- sbi->sm_info->cmd_control_info;
-
- if (fcc && fcc->f2fs_issue_flush)
- kthread_stop(fcc->f2fs_issue_flush);
- kfree(fcc);
- sbi->sm_info->cmd_control_info = NULL;
+ destroy_flush_cmd_control(sbi);
} else if (test_opt(sbi, FLUSH_MERGE) &&
!sbi->sm_info->cmd_control_info) {
- dev_t dev = sbi->sb->s_bdev->bd_dev;
- struct flush_cmd_control *fcc =
- kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL);
-
- if (!fcc) {
- err = -ENOMEM;
- goto restore_gc;
- }
- spin_lock_init(&fcc->issue_lock);
- init_waitqueue_head(&fcc->flush_wait_queue);
- fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
- "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
- if (IS_ERR(fcc->f2fs_issue_flush)) {
- err = PTR_ERR(fcc->f2fs_issue_flush);
- kfree(fcc);
+ err = create_flush_cmd_control(sbi);
+ if (err)
goto restore_gc;
- }
- sbi->sm_info->cmd_control_info = fcc;
}
skip:
/* Update the POSIXACL Flag */
--
1.7.7
--
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