f2fs: Pass a folio to f2fs_is_compressed_page()

All callers now have a folio so pass it in.  Also remove the test for
the private flag; it is redundant with checking folio->private for being
NULL.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Author: Matthew Wilcox (Oracle)

fs/f2fs/compress.c

@@ -71,17 +71,15 @@ static pgoff_t start_idx_of_cluster(struct compress_ctx *cc)
 	return cc->cluster_idx << cc->log_cluster_size;
 }
 
-bool f2fs_is_compressed_page(struct page *page)
+bool f2fs_is_compressed_page(struct folio *folio)
 {
-	if (!PagePrivate(page))
+	if (!folio->private)
 		return false;
-	if (!page_private(page))
-		return false;
-	if (page_private_nonpointer(page))
+	if (folio_test_f2fs_nonpointer(folio))
 		return false;
 
-	f2fs_bug_on(F2FS_P_SB(page),
-		*((u32 *)page_private(page)) != F2FS_COMPRESSED_PAGE_MAGIC);
+	f2fs_bug_on(F2FS_F_SB(folio),
+		*((u32 *)folio->private) != F2FS_COMPRESSED_PAGE_MAGIC);
 	return true;
 }
 
@@ -1478,7 +1476,7 @@ void f2fs_compress_write_end_io(struct bio *bio, struct folio *folio)
 	struct f2fs_sb_info *sbi = bio->bi_private;
 	struct compress_io_ctx *cic = folio->private;
 	enum count_type type = WB_DATA_TYPE(folio,
-				f2fs_is_compressed_page(page));
+				f2fs_is_compressed_page(folio));
 	int i;
 
 	if (unlikely(bio->bi_status != BLK_STS_OK))

fs/f2fs/data.c

@@ -142,7 +142,7 @@ static void f2fs_finish_read_bio(struct bio *bio, bool in_task)
 	bio_for_each_folio_all(fi, bio) {
 		struct folio *folio = fi.folio;
 
-		if (f2fs_is_compressed_page(&folio->page)) {
+		if (f2fs_is_compressed_page(folio)) {
 			if (ctx && !ctx->decompression_attempted)
 				f2fs_end_read_compressed_page(folio, true, 0,
 							in_task);
@@ -186,7 +186,7 @@ static void f2fs_verify_bio(struct work_struct *work)
 		bio_for_each_folio_all(fi, bio) {
 			struct folio *folio = fi.folio;
 
-			if (!f2fs_is_compressed_page(&folio->page) &&
+			if (!f2fs_is_compressed_page(folio) &&
 			    !fsverity_verify_page(&folio->page)) {
 				bio->bi_status = BLK_STS_IOERR;
 				break;
@@ -239,7 +239,7 @@ static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx,
 	bio_for_each_folio_all(fi, ctx->bio) {
 		struct folio *folio = fi.folio;
 
-		if (f2fs_is_compressed_page(&folio->page))
+		if (f2fs_is_compressed_page(folio))
 			f2fs_end_read_compressed_page(folio, false, blkaddr,
 						      in_task);
 		else
@@ -337,7 +337,7 @@ static void f2fs_write_end_io(struct bio *bio)
 		}
 
 #ifdef CONFIG_F2FS_FS_COMPRESSION
-		if (f2fs_is_compressed_page(&folio->page)) {
+		if (f2fs_is_compressed_page(folio)) {
 			f2fs_compress_write_end_io(bio, folio);
 			continue;
 		}
@@ -561,7 +561,7 @@ static bool __has_merged_page(struct bio *bio, struct inode *inode,
 			if (IS_ERR(target))
 				continue;
 		}
-		if (f2fs_is_compressed_page(&target->page)) {
+		if (f2fs_is_compressed_page(target)) {
 			target = f2fs_compress_control_folio(target);
 			if (IS_ERR(target))
 				continue;

fs/f2fs/f2fs.h

@@ -4474,7 +4474,7 @@ enum cluster_check_type {
 	CLUSTER_COMPR_BLKS, /* return # of compressed blocks in a cluster */
 	CLUSTER_RAW_BLKS    /* return # of raw blocks in a cluster */
 };
-bool f2fs_is_compressed_page(struct page *page);
+bool f2fs_is_compressed_page(struct folio *folio);
 struct folio *f2fs_compress_control_folio(struct folio *folio);
 int f2fs_prepare_compress_overwrite(struct inode *inode,
 			struct page **pagep, pgoff_t index, void **fsdata);
@@ -4543,7 +4543,7 @@ void f2fs_invalidate_compress_pages(struct f2fs_sb_info *sbi, nid_t ino);
 		sbi->compr_saved_block += diff;				\
 	} while (0)
 #else
-static inline bool f2fs_is_compressed_page(struct page *page) { return false; }
+static inline bool f2fs_is_compressed_page(struct folio *folio) { return false; }
 static inline bool f2fs_is_compress_backend_ready(struct inode *inode)
 {
 	if (!f2fs_compressed_file(inode))