f2fs: remove power-of-two limitation of zoned device

In f2fs, there's no reason to force po2.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/f2fs.h

@@ -1523,7 +1523,6 @@ struct f2fs_sb_info {
 
 #ifdef CONFIG_BLK_DEV_ZONED
 	unsigned int blocks_per_blkz;		/* F2FS blocks per zone */
-	unsigned int log_blocks_per_blkz;	/* log2 F2FS blocks per zone */
 #endif
 
 	/* for node-related operations */
@@ -4390,7 +4389,7 @@ F2FS_FEATURE_FUNCS(readonly, RO);
 static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
 				    block_t blkaddr)
 {
-	unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
+	unsigned int zno = blkaddr / sbi->blocks_per_blkz;
 
 	return test_bit(zno, FDEV(devi).blkz_seq);
 }

fs/f2fs/gc.c

@@ -2093,8 +2093,8 @@ static void update_fs_metadata(struct f2fs_sb_info *sbi, int secs)
 		FDEV(last_dev).end_blk =
 				(long long)FDEV(last_dev).end_blk + blks;
 #ifdef CONFIG_BLK_DEV_ZONED
-		FDEV(last_dev).nr_blkz = (int)FDEV(last_dev).nr_blkz +
-					(int)(blks >> sbi->log_blocks_per_blkz);
+		FDEV(last_dev).nr_blkz = FDEV(last_dev).nr_blkz +
+					div_u64(blks, sbi->blocks_per_blkz);
 #endif
 	}
 }

fs/f2fs/segment.c

@@ -2075,7 +2075,7 @@ void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
 
 		if (force && start >= cpc->trim_start &&
 					(end - 1) <= cpc->trim_end)
-				continue;
+			continue;
 
 		/* Should cover 2MB zoned device for zone-based reset */
 		if (!f2fs_sb_has_blkzoned(sbi) &&

fs/f2fs/super.c

@@ -3806,12 +3806,8 @@ static int init_blkz_info(struct f2fs_sb_info *sbi, int devi)
 				SECTOR_TO_BLOCK(zone_sectors))
 		return -EINVAL;
 	sbi->blocks_per_blkz = SECTOR_TO_BLOCK(zone_sectors);
-	if (sbi->log_blocks_per_blkz && sbi->log_blocks_per_blkz !=
-				__ilog2_u32(sbi->blocks_per_blkz))
-		return -EINVAL;
-	sbi->log_blocks_per_blkz = __ilog2_u32(sbi->blocks_per_blkz);
-	FDEV(devi).nr_blkz = SECTOR_TO_BLOCK(nr_sectors) >>
-					sbi->log_blocks_per_blkz;
+	FDEV(devi).nr_blkz = div_u64(SECTOR_TO_BLOCK(nr_sectors),
+					sbi->blocks_per_blkz);
 	if (nr_sectors & (zone_sectors - 1))
 		FDEV(devi).nr_blkz++;