Commit 4660f9c0 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: introduce f2fs_balance_fs_bg for some background jobs 



This patch merges some background jobs into this new function.

Signed-off-by: default avatarChangman Lee <cm224.lee@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
parent 81eb8d6e

fs/f2fs/f2fs.h

+2 −0
Original line number Diff line number Diff line
@@ -965,6 +965,7 @@ long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 
 */

void f2fs_set_inode_flags(struct inode *);

struct inode *f2fs_iget(struct super_block *, unsigned long);

int try_to_free_nats(struct f2fs_sb_info *, int);

void update_inode(struct inode *, struct page *);

int update_inode_page(struct inode *);

int f2fs_write_inode(struct inode *, struct writeback_control *);
@@ -1045,6 +1046,7 @@ void destroy_node_manager_caches(void); 
 * segment.c

 */

void f2fs_balance_fs(struct f2fs_sb_info *);

void f2fs_balance_fs_bg(struct f2fs_sb_info *);

void invalidate_blocks(struct f2fs_sb_info *, block_t);

void clear_prefree_segments(struct f2fs_sb_info *);

int npages_for_summary_flush(struct f2fs_sb_info *);

fs/f2fs/gc.c

+2 −3
Original line number Diff line number Diff line
@@ -83,9 +83,8 @@ static int gc_thread_func(void *data) 
		if (f2fs_gc(sbi))

			wait_ms = gc_th->no_gc_sleep_time;



		/* balancing prefree segments */

		if (excess_prefree_segs(sbi))

			f2fs_sync_fs(sbi->sb, true);

		/* balancing f2fs's metadata periodically */

		f2fs_balance_fs_bg(sbi);



	} while (!kthread_should_stop());

	return 0;

fs/f2fs/node.c

+3 −7
Original line number Diff line number Diff line
@@ -240,7 +240,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, 
	write_unlock(&nm_i->nat_tree_lock);

}



static int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)

int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)

{

	struct f2fs_nm_info *nm_i = NM_I(sbi);
@@ -1205,12 +1205,8 @@ static int f2fs_write_node_pages(struct address_space *mapping, 
	struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);

	long nr_to_write = wbc->nr_to_write;



	/* First check balancing cached NAT entries */

	if (try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK) ||

				excess_prefree_segs(sbi)) {

		f2fs_sync_fs(sbi->sb, true);

		return 0;

	}

	/* balancing f2fs's metadata in background */

	f2fs_balance_fs_bg(sbi);



	/* collect a number of dirty node pages and write together */

	if (get_pages(sbi, F2FS_DIRTY_NODES) < COLLECT_DIRTY_NODES)

fs/f2fs/segment.c

+8 −0
Original line number Diff line number Diff line
@@ -36,6 +36,14 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi) 
	}

}



void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)

{

	/* check the # of cached NAT entries and prefree segments */

	if (try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK) ||

				excess_prefree_segs(sbi))

		f2fs_sync_fs(sbi->sb, true);

}



static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno,

		enum dirty_type dirty_type)

{