fs/f2fs: Use the enum req_op and blk_opf_t types

Improve static type checking by using the enum req_op type for variables
that represent a request operation and the new blk_opf_t type for
variables that represent request flags.

Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-53-bvanassche@acm.orgSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/f2fs/data.c

@@ -387,11 +387,11 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
 	return 0;
 }
 
-static unsigned int f2fs_io_flags(struct f2fs_io_info *fio)
+static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio)
 {
 	unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1;
 	unsigned int fua_flag, meta_flag, io_flag;
-	unsigned int op_flags = 0;
+	blk_opf_t op_flags = 0;
 
 	if (fio->op != REQ_OP_WRITE)
 		return 0;
@@ -999,7 +999,7 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio)
 }
 
 static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
-				      unsigned nr_pages, unsigned op_flag,
+				      unsigned nr_pages, blk_opf_t op_flag,
 				      pgoff_t first_idx, bool for_write)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
@@ -1047,7 +1047,8 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
 
 /* This can handle encryption stuffs */
 static int f2fs_submit_page_read(struct inode *inode, struct page *page,
-				 block_t blkaddr, int op_flags, bool for_write)
+				 block_t blkaddr, blk_opf_t op_flags,
+				 bool for_write)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	struct bio *bio;
@@ -1181,7 +1182,7 @@ int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
 }
 
 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
-						int op_flags, bool for_write)
+				     blk_opf_t op_flags, bool for_write)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct dnode_of_data dn;

fs/f2fs/f2fs.h

@@ -1183,8 +1183,8 @@ struct f2fs_io_info {
 	nid_t ino;		/* inode number */
 	enum page_type type;	/* contains DATA/NODE/META/META_FLUSH */
 	enum temp_type temp;	/* contains HOT/WARM/COLD */
-	int op;			/* contains REQ_OP_ */
-	int op_flags;		/* req_flag_bits */
+	enum req_op op;		/* contains REQ_OP_ */
+	blk_opf_t op_flags;	/* req_flag_bits */
 	block_t new_blkaddr;	/* new block address to be written */
 	block_t old_blkaddr;	/* old block address before Cow */
 	struct page *page;	/* page to be written */
@@ -3741,7 +3741,7 @@ int f2fs_reserve_new_block(struct dnode_of_data *dn);
 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
-			int op_flags, bool for_write);
+			blk_opf_t op_flags, bool for_write);
 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
 			bool for_write);

fs/f2fs/node.c

@@ -1327,7 +1327,7 @@ struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
  * 0: f2fs_put_page(page, 0)
  * LOCKED_PAGE or error: f2fs_put_page(page, 1)
  */
-static int read_node_page(struct page *page, int op_flags)
+static int read_node_page(struct page *page, blk_opf_t op_flags)
 {
 	struct f2fs_sb_info *sbi = F2FS_P_SB(page);
 	struct node_info ni;

fs/f2fs/segment.c

@@ -1082,7 +1082,7 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
 	struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
 	struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ?
 					&(dcc->fstrim_list) : &(dcc->wait_list);
-	int flag = dpolicy->sync ? REQ_SYNC : 0;
+	blk_opf_t flag = dpolicy->sync ? REQ_SYNC : 0;
 	block_t lstart, start, len, total_len;
 	int err = 0;
 

include/trace/events/f2fs.h

@@ -66,7 +66,7 @@ TRACE_DEFINE_ENUM(CP_RESIZE);
 
 #define F2FS_OP_FLAGS (REQ_RAHEAD | REQ_SYNC | REQ_META | REQ_PRIO |	\
 			REQ_PREFLUSH | REQ_FUA)
-#define F2FS_BIO_FLAG_MASK(t)	(t & F2FS_OP_FLAGS)
+#define F2FS_BIO_FLAG_MASK(t) (__force u32)((t) & F2FS_OP_FLAGS)
 
 #define show_bio_type(op,op_flags)	show_bio_op(op),		\
 						show_bio_op_flags(op_flags)
@@ -75,12 +75,12 @@ TRACE_DEFINE_ENUM(CP_RESIZE);
 
 #define show_bio_op_flags(flags)					\
 	__print_flags(F2FS_BIO_FLAG_MASK(flags), "|",			\
-		{ REQ_RAHEAD,		"R" },				\
-		{ REQ_SYNC,		"S" },				\
-		{ REQ_META,		"M" },				\
-		{ REQ_PRIO,		"P" },				\
-		{ REQ_PREFLUSH,		"PF" },				\
-		{ REQ_FUA,		"FUA" })
+		{ (__force u32)REQ_RAHEAD,	"R" },			\
+		{ (__force u32)REQ_SYNC,	"S" },			\
+		{ (__force u32)REQ_META,	"M" },			\
+		{ (__force u32)REQ_PRIO,	"P" },			\
+		{ (__force u32)REQ_PREFLUSH,	"PF" },			\
+		{ (__force u32)REQ_FUA,		"FUA" })
 
 #define show_data_type(type)						\
 	__print_symbolic(type,						\
@@ -1036,8 +1036,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
 		__field(pgoff_t, index)
 		__field(block_t, old_blkaddr)
 		__field(block_t, new_blkaddr)
-		__field(int, op)
-		__field(int, op_flags)
+		__field(enum req_op, op)
+		__field(blk_opf_t, op_flags)
 		__field(int, temp)
 		__field(int, type)
 	),
@@ -1092,8 +1092,8 @@ DECLARE_EVENT_CLASS(f2fs__bio,
 	TP_STRUCT__entry(
 		__field(dev_t,	dev)
 		__field(dev_t,	target)
-		__field(int,	op)
-		__field(int,	op_flags)
+		__field(enum req_op,	op)
+		__field(blk_opf_t,	op_flags)
 		__field(int,	type)
 		__field(sector_t,	sector)
 		__field(unsigned int,	size)