f2fs: remove __add_sum_entry

This function just assigns a summary entry.  This can be done entirely
typesafe with an open code struct assignment that relies on array
indexing.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/segment.c

@@ -2339,19 +2339,6 @@ bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr)
 	return is_cp;
 }
 
-/*
- * This function should be resided under the curseg_mutex lock
- */
-static void __add_sum_entry(struct f2fs_sb_info *sbi, int type,
-					struct f2fs_summary *sum)
-{
-	struct curseg_info *curseg = CURSEG_I(sbi, type);
-	void *addr = curseg->sum_blk;
-
-	addr += curseg->next_blkoff * sizeof(struct f2fs_summary);
-	memcpy(addr, sum, sizeof(struct f2fs_summary));
-}
-
 /*
  * Calculate the number of current summary pages for writing
  */
@@ -3278,13 +3265,7 @@ void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
 
 	f2fs_wait_discard_bio(sbi, *new_blkaddr);
 
-	/*
-	 * __add_sum_entry should be resided under the curseg_mutex
-	 * because, this function updates a summary entry in the
-	 * current summary block.
-	 */
-	__add_sum_entry(sbi, type, sum);
-
+	curseg->sum_blk->entries[curseg->next_blkoff] = *sum;
 	__refresh_next_blkoff(sbi, curseg);
 
 	stat_inc_block_count(sbi, curseg);
@@ -3587,7 +3568,7 @@ void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
 	}
 
 	curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr);
-	__add_sum_entry(sbi, type, sum);
+	curseg->sum_blk->entries[curseg->next_blkoff] = *sum;
 
 	if (!recover_curseg || recover_newaddr) {
 		if (!from_gc)