f2fs: clean up with is_valid_blkaddr()

- rename is_valid_blkaddr() to is_valid_meta_blkaddr() for readability.
- introduce is_valid_blkaddr() for cleanup.

No logic change in this patch.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/checkpoint.c

@@ -119,7 +119,7 @@ struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
 	return __get_meta_page(sbi, index, false);
 }
 
-bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
+bool is_valid_meta_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type)
 {
 	switch (type) {
 	case META_NAT:
@@ -175,7 +175,7 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
 	blk_start_plug(&plug);
 	for (; nrpages-- > 0; blkno++) {
 
-		if (!is_valid_blkaddr(sbi, blkno, type))
+		if (!is_valid_meta_blkaddr(sbi, blkno, type))
 			goto out;
 
 		switch (type) {

fs/f2fs/data.c

@@ -486,7 +486,7 @@ int f2fs_submit_page_write(struct f2fs_io_info *fio)
 		spin_unlock(&io->io_lock);
 	}
 
-	if (fio->old_blkaddr != NEW_ADDR)
+	if (is_valid_blkaddr(fio->old_blkaddr))
 		verify_block_addr(fio, fio->old_blkaddr);
 	verify_block_addr(fio, fio->new_blkaddr);
 
@@ -1046,7 +1046,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
 next_block:
 	blkaddr = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node);
 
-	if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) {
+	if (!is_valid_blkaddr(blkaddr)) {
 		if (create) {
 			if (unlikely(f2fs_cp_error(sbi))) {
 				err = -EIO;
@@ -1681,15 +1681,6 @@ static inline bool need_inplace_update(struct f2fs_io_info *fio)
 	return should_update_inplace(inode, fio);
 }
 
-static inline bool valid_ipu_blkaddr(struct f2fs_io_info *fio)
-{
-	if (fio->old_blkaddr == NEW_ADDR)
-		return false;
-	if (fio->old_blkaddr == NULL_ADDR)
-		return false;
-	return true;
-}
-
 int do_write_data_page(struct f2fs_io_info *fio)
 {
 	struct page *page = fio->page;
@@ -1704,7 +1695,7 @@ int do_write_data_page(struct f2fs_io_info *fio)
 			f2fs_lookup_extent_cache(inode, page->index, &ei)) {
 		fio->old_blkaddr = ei.blk + page->index - ei.fofs;
 
-		if (valid_ipu_blkaddr(fio)) {
+		if (is_valid_blkaddr(fio->old_blkaddr)) {
 			ipu_force = true;
 			fio->need_lock = LOCK_DONE;
 			goto got_it;
@@ -1731,7 +1722,8 @@ int do_write_data_page(struct f2fs_io_info *fio)
 	 * If current allocation needs SSR,
 	 * it had better in-place writes for updated data.
 	 */
-	if (ipu_force || (valid_ipu_blkaddr(fio) && need_inplace_update(fio))) {
+	if (ipu_force || (is_valid_blkaddr(fio->old_blkaddr) &&
+					need_inplace_update(fio))) {
 		err = encrypt_one_page(fio);
 		if (err)
 			goto out_writepage;

fs/f2fs/f2fs.h

@@ -2644,6 +2644,13 @@ static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
 	spin_unlock(&sbi->iostat_lock);
 }
 
+static inline bool is_valid_blkaddr(block_t blkaddr)
+{
+	if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR)
+		return false;
+	return true;
+}
+
 /*
  * file.c
  */
@@ -2862,7 +2869,7 @@ void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
 struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
 struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
 struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
-bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
+bool is_valid_meta_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
 int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
 			int type, bool sync);
 void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);

fs/f2fs/file.c

@@ -352,7 +352,7 @@ static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
 	switch (whence) {
 	case SEEK_DATA:
 		if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
-			(blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
+			is_valid_blkaddr(blkaddr))
 			return true;
 		break;
 	case SEEK_HOLE:

fs/f2fs/inode.c

@@ -72,7 +72,7 @@ static bool __written_first_block(struct f2fs_inode *ri)
 {
 	block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
 
-	if (addr != NEW_ADDR && addr != NULL_ADDR)
+	if (is_valid_blkaddr(addr))
 		return true;
 	return false;
 }

fs/f2fs/node.c

@@ -379,8 +379,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
 			new_blkaddr == NULL_ADDR);
 	f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR &&
 			new_blkaddr == NEW_ADDR);
-	f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR &&
-			nat_get_blkaddr(e) != NULL_ADDR &&
+	f2fs_bug_on(sbi, is_valid_blkaddr(nat_get_blkaddr(e)) &&
 			new_blkaddr == NEW_ADDR);
 
 	/* increment version no as node is removed */
@@ -391,7 +390,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
 
 	/* change address */
 	nat_set_blkaddr(e, new_blkaddr);
-	if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR)
+	if (!is_valid_blkaddr(new_blkaddr))
 		set_nat_flag(e, IS_CHECKPOINTED, false);
 	__set_nat_cache_dirty(nm_i, e);
 

fs/f2fs/recovery.c

@@ -252,7 +252,7 @@ static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head,
 	while (1) {
 		struct fsync_inode_entry *entry;
 
-		if (!is_valid_blkaddr(sbi, blkaddr, META_POR))
+		if (!is_valid_meta_blkaddr(sbi, blkaddr, META_POR))
 			return 0;
 
 		page = get_tmp_page(sbi, blkaddr);
@@ -506,7 +506,7 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
 		}
 
 		/* dest is valid block, try to recover from src to dest */
-		if (is_valid_blkaddr(sbi, dest, META_POR)) {
+		if (is_valid_meta_blkaddr(sbi, dest, META_POR)) {
 
 			if (src == NULL_ADDR) {
 				err = reserve_new_block(&dn);
@@ -567,7 +567,7 @@ static int recover_data(struct f2fs_sb_info *sbi, struct list_head *inode_list,
 	while (1) {
 		struct fsync_inode_entry *entry;
 
-		if (!is_valid_blkaddr(sbi, blkaddr, META_POR))
+		if (!is_valid_meta_blkaddr(sbi, blkaddr, META_POR))
 			break;
 
 		ra_meta_pages_cond(sbi, blkaddr);

fs/f2fs/segment.c

@@ -1895,7 +1895,7 @@ bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
 	struct seg_entry *se;
 	bool is_cp = false;
 
-	if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR)
+	if (!is_valid_blkaddr(blkaddr))
 		return true;
 
 	down_read(&sit_i->sentry_lock);
@@ -2959,7 +2959,7 @@ void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr)
 {
 	struct page *cpage;
 
-	if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR)
+	if (!is_valid_blkaddr(blkaddr))
 		return;
 
 	cpage = find_lock_page(META_MAPPING(sbi), blkaddr);

fs/f2fs/segment.h

@@ -85,7 +85,7 @@
 	(GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & ((sbi)->blocks_per_seg - 1))
 
 #define GET_SEGNO(sbi, blk_addr)					\
-	((((blk_addr) == NULL_ADDR) || ((blk_addr) == NEW_ADDR)) ?	\
+	((!is_valid_blkaddr(blk_addr)) ?			\
 	NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi),			\
 		GET_SEGNO_FROM_SEG0(sbi, blk_addr)))
 #define BLKS_PER_SEC(sbi)					\