f2fs: Use DIV_ROUND_UP() instead of open-coding

Replace the open-coded divisions with round-up by calls to the
DIV_ROUND_UP() helper macro.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/f2fs.h

@@ -480,8 +480,8 @@ static inline int get_inline_xattr_addrs(struct inode *inode);
 #define NR_INLINE_DENTRY(inode)	(MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
 				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
 				BITS_PER_BYTE + 1))
-#define INLINE_DENTRY_BITMAP_SIZE(inode)	((NR_INLINE_DENTRY(inode) + \
-					BITS_PER_BYTE - 1) / BITS_PER_BYTE)
+#define INLINE_DENTRY_BITMAP_SIZE(inode) \
+	DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
 #define INLINE_RESERVED_SIZE(inode)	(MAX_INLINE_DATA(inode) - \
 				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
 				NR_INLINE_DENTRY(inode) + \

fs/f2fs/file.c

@@ -1211,7 +1211,7 @@ static int __exchange_data_block(struct inode *src_inode,
 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
-	pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+	pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
 	pgoff_t start = offset >> PAGE_SHIFT;
 	pgoff_t end = (offset + len) >> PAGE_SHIFT;
 	int ret;
@@ -1464,7 +1464,7 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
 	pg_start = offset >> PAGE_SHIFT;
 	pg_end = (offset + len) >> PAGE_SHIFT;
 	delta = pg_end - pg_start;
-	idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
+	idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
 
 	/* avoid gc operation during block exchange */
 	down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
@@ -2362,7 +2362,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
 	if (!fragmented)
 		goto out;
 
-	sec_num = (total + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
+	sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
 
 	/*
 	 * make sure there are enough free section for LFS allocation, this can

fs/f2fs/segment.h

@@ -109,7 +109,7 @@
 #define	START_SEGNO(segno)		\
 	(SIT_BLOCK_OFFSET(segno) * SIT_ENTRY_PER_BLOCK)
 #define SIT_BLK_CNT(sbi)			\
-	((MAIN_SEGS(sbi) + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK)
+	DIV_ROUND_UP(MAIN_SEGS(sbi), SIT_ENTRY_PER_BLOCK)
 #define f2fs_bitmap_size(nr)			\
 	(BITS_TO_LONGS(nr) * sizeof(unsigned long))