f2fs: clean up set REQ_RAHEAD given rac

Let's set REQ_RAHEAD per rac by single source.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/compress.c

@@ -1100,7 +1100,7 @@ static int prepare_compress_overwrite(struct compress_ctx *cc,
 		struct bio *bio = NULL;
 
 		ret = f2fs_read_multi_pages(cc, &bio, cc->cluster_size,
-					&last_block_in_bio, false, true);
+					&last_block_in_bio, NULL, true);
 		f2fs_put_rpages(cc);
 		f2fs_destroy_compress_ctx(cc, true);
 		if (ret)

fs/f2fs/data.c

@@ -2067,12 +2067,17 @@ static inline loff_t f2fs_readpage_limit(struct inode *inode)
 	return i_size_read(inode);
 }
 
+static inline blk_opf_t f2fs_ra_op_flags(struct readahead_control *rac)
+{
+	return rac ? REQ_RAHEAD : 0;
+}
+
 static int f2fs_read_single_page(struct inode *inode, struct folio *folio,
 					unsigned nr_pages,
 					struct f2fs_map_blocks *map,
 					struct bio **bio_ret,
 					sector_t *last_block_in_bio,
-					bool is_readahead)
+					struct readahead_control *rac)
 {
 	struct bio *bio = *bio_ret;
 	const unsigned blocksize = blks_to_bytes(inode, 1);
@@ -2148,7 +2153,7 @@ static int f2fs_read_single_page(struct inode *inode, struct folio *folio,
 	}
 	if (bio == NULL) {
 		bio = f2fs_grab_read_bio(inode, block_nr, nr_pages,
-				is_readahead ? REQ_RAHEAD : 0, index,
+				f2fs_ra_op_flags(rac), index,
 				false);
 		if (IS_ERR(bio)) {
 			ret = PTR_ERR(bio);
@@ -2178,7 +2183,7 @@ static int f2fs_read_single_page(struct inode *inode, struct folio *folio,
 #ifdef CONFIG_F2FS_FS_COMPRESSION
 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
 				unsigned nr_pages, sector_t *last_block_in_bio,
-				bool is_readahead, bool for_write)
+				struct readahead_control *rac, bool for_write)
 {
 	struct dnode_of_data dn;
 	struct inode *inode = cc->inode;
@@ -2301,7 +2306,7 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
 
 		if (!bio) {
 			bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages,
-					is_readahead ? REQ_RAHEAD : 0,
+					f2fs_ra_op_flags(rac),
 					page->index, for_write);
 			if (IS_ERR(bio)) {
 				ret = PTR_ERR(bio);
@@ -2399,7 +2404,7 @@ static int f2fs_mpage_readpages(struct inode *inode,
 			ret = f2fs_read_multi_pages(&cc, &bio,
 						max_nr_pages,
 						&last_block_in_bio,
-						rac != NULL, false);
+						rac, false);
 			f2fs_destroy_compress_ctx(&cc, false);
 			if (ret)
 				goto set_error_page;
@@ -2449,7 +2454,7 @@ static int f2fs_mpage_readpages(struct inode *inode,
 				ret = f2fs_read_multi_pages(&cc, &bio,
 							max_nr_pages,
 							&last_block_in_bio,
-							rac != NULL, false);
+							rac, false);
 				f2fs_destroy_compress_ctx(&cc, false);
 			}
 		}

fs/f2fs/f2fs.h

@@ -4298,7 +4298,7 @@ void f2fs_update_read_extent_tree_range_compressed(struct inode *inode,
 				unsigned int llen, unsigned int c_len);
 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
 				unsigned nr_pages, sector_t *last_block_in_bio,
-				bool is_readahead, bool for_write);
+				struct readahead_control *rac, bool for_write);
 struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
 void f2fs_decompress_end_io(struct decompress_io_ctx *dic, bool failed,
 				bool in_task);