Commit 2dcf51ab authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: add need_dentry_mark 



This patch introduces need_dentry_mark() to clean up and avoid redundant
node locks.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 01f28610

fs/f2fs/f2fs.h

+1 −0
Original line number Diff line number Diff line
@@ -1565,6 +1565,7 @@ struct dnode_of_data; 
struct node_info;



bool available_free_memory(struct f2fs_sb_info *, int);

int need_dentry_mark(struct f2fs_sb_info *, nid_t);

bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);

bool need_inode_block_update(struct f2fs_sb_info *, nid_t);

void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);

fs/f2fs/node.c

+17 −18
Original line number Diff line number Diff line
@@ -195,32 +195,35 @@ static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, 
							start, nr);

}



bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)

int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid)

{

	struct f2fs_nm_info *nm_i = NM_I(sbi);

	struct nat_entry *e;

	bool is_cp = true;

	bool need = false;



	down_read(&nm_i->nat_tree_lock);

	e = __lookup_nat_cache(nm_i, nid);

	if (e && !get_nat_flag(e, IS_CHECKPOINTED))

		is_cp = false;

	if (e) {

		if (!get_nat_flag(e, IS_CHECKPOINTED) &&

				!get_nat_flag(e, HAS_FSYNCED_INODE))

			need = true;

	}

	up_read(&nm_i->nat_tree_lock);

	return is_cp;

	return need;

}



static bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino)

bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)

{

	struct f2fs_nm_info *nm_i = NM_I(sbi);

	struct nat_entry *e;

	bool fsynced = false;

	bool is_cp = true;



	down_read(&nm_i->nat_tree_lock);

	e = __lookup_nat_cache(nm_i, ino);

	if (e && get_nat_flag(e, HAS_FSYNCED_INODE))

		fsynced = true;

	e = __lookup_nat_cache(nm_i, nid);

	if (e && !get_nat_flag(e, IS_CHECKPOINTED))

		is_cp = false;

	up_read(&nm_i->nat_tree_lock);

	return fsynced;

	return is_cp;

}



bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino)
@@ -1206,13 +1209,9 @@ int sync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, 
			/* called by fsync() */

			if (ino && IS_DNODE(page)) {

				set_fsync_mark(page, 1);

				if (IS_INODE(page)) {

					if (!is_checkpointed_node(sbi, ino) &&

						!has_fsynced_inode(sbi, ino))

						set_dentry_mark(page, 1);

					else

						set_dentry_mark(page, 0);

				}

				if (IS_INODE(page))

					set_dentry_mark(page,

						need_dentry_mark(sbi, ino));

				nwritten++;

			} else {

				set_fsync_mark(page, 0);