f2fs: provide f2fs_balance_fs to __write_node_page

Let node writeback also do f2fs_balance_fs to ensure there are always enough free
segments.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index e8ceff4..2497695 100644 (file)
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1018,7 +1018,7 @@ retry_flush_nodes:
 
        if (get_pages(sbi, F2FS_DIRTY_NODES)) {
                up_write(&sbi->node_write);
-               err = sync_node_pages(sbi, &wbc);
+               err = sync_node_pages(sbi, &wbc, false);
                if (err) {
                        up_write(&sbi->node_change);
                        f2fs_unlock_all(sbi);

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 95f366e..5175e5b 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2471,7 +2471,8 @@ struct page *get_node_page_ra(struct page *parent, int start);
 void move_node_page(struct page *node_page, int gc_type);
 int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
                        struct writeback_control *wbc, bool atomic);
-int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc);
+int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
+                       bool do_balance);
 void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
 bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
 void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 62f7bb2..133afd2 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1327,7 +1327,7 @@ continue_unlock:
 }
 
 static int __write_node_page(struct page *page, bool atomic, bool *submitted,
-                               struct writeback_control *wbc)
+                               struct writeback_control *wbc, bool do_balance)
 {
        struct f2fs_sb_info *sbi = F2FS_P_SB(page);
        nid_t nid;
@@ -1396,6 +1396,8 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
        if (submitted)
                *submitted = fio.submitted;
 
+       if (do_balance)
+               f2fs_balance_fs(sbi, false);
        return 0;
 
 redirty_out:
@@ -1406,7 +1408,7 @@ redirty_out:
 static int f2fs_write_node_page(struct page *page,
                                struct writeback_control *wbc)
 {
-       return __write_node_page(page, false, NULL, wbc);
+       return __write_node_page(page, false, NULL, wbc, false);
 }
 
 int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
@@ -1494,7 +1496,7 @@ continue_unlock:
 
                        ret = __write_node_page(page, atomic &&
                                                page == last_page,
-                                               &submitted, wbc);
+                                               &submitted, wbc, true);
                        if (ret) {
                                unlock_page(page);
                                f2fs_put_page(last_page, 0);
@@ -1531,7 +1533,8 @@ out:
        return ret ? -EIO: 0;
 }
 
-int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc)
+int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
+                                                       bool do_balance)
 {
        pgoff_t index, end;
        struct pagevec pvec;
@@ -1609,7 +1612,8 @@ continue_unlock:
                        set_fsync_mark(page, 0);
                        set_dentry_mark(page, 0);
 
-                       ret = __write_node_page(page, false, &submitted, wbc);
+                       ret = __write_node_page(page, false, &submitted,
+                                                       wbc, do_balance);
                        if (ret)
                                unlock_page(page);
                        else if (submitted)
@@ -1701,7 +1705,7 @@ static int f2fs_write_node_pages(struct address_space *mapping,
        diff = nr_pages_to_write(sbi, NODE, wbc);
        wbc->sync_mode = WB_SYNC_NONE;
        blk_start_plug(&plug);
-       sync_node_pages(sbi, wbc);
+       sync_node_pages(sbi, wbc, true);
        blk_finish_plug(&plug);
        wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff);
        return 0;