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f2fs: provide f2fs_balance_fs to __write_node_page

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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>
This commit is contained in:
Yunlong Song 2017-07-27 20:11:00 +08:00 committed by Jaegeuk Kim
parent ddc34e328d
commit 401db79f61
3 changed files with 13 additions and 8 deletions
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2
fs/f2fs/checkpoint.c
View file

@ -1017,7 +1017,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
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);

3
fs/f2fs/f2fs.h
View file

@ -2390,7 +2390,8 @@ 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);

16
fs/f2fs/node.c
View file

@ -1327,7 +1327,7 @@ static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
}
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 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
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 @@ int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
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 @@ int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
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 @@ int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc)
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)
@ -1698,7 +1702,7 @@ 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;