f2fs: move f2fs_force_buffered_io() into file.c

f2fs_force_buffered_io() is only used in file.c, so move it into there.
No behavior change.  This makes it easier to review later patches.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Link: https://lore.kernel.org/r/20220827065851.135710-6-ebiggers@kernel.org

fs/f2fs/f2fs.h

@@ -4471,17 +4471,6 @@ static inline void f2fs_i_compr_blocks_update(struct inode *inode,
 	f2fs_mark_inode_dirty_sync(inode, true);
 }
 
-static inline int block_unaligned_IO(struct inode *inode,
-				struct kiocb *iocb, struct iov_iter *iter)
-{
-	unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
-	unsigned int blocksize_mask = (1 << i_blkbits) - 1;
-	loff_t offset = iocb->ki_pos;
-	unsigned long align = offset | iov_iter_alignment(iter);
-
-	return align & blocksize_mask;
-}
-
 static inline bool f2fs_allow_multi_device_dio(struct f2fs_sb_info *sbi,
 								int flag)
 {
@@ -4492,35 +4481,6 @@ static inline bool f2fs_allow_multi_device_dio(struct f2fs_sb_info *sbi,
 	return sbi->aligned_blksize;
 }
 
-static inline bool f2fs_force_buffered_io(struct inode *inode,
-				struct kiocb *iocb, struct iov_iter *iter)
-{
-	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
-	int rw = iov_iter_rw(iter);
-
-	if (!fscrypt_dio_supported(inode))
-		return true;
-	if (fsverity_active(inode))
-		return true;
-	if (f2fs_compressed_file(inode))
-		return true;
-
-	/* disallow direct IO if any of devices has unaligned blksize */
-	if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
-		return true;
-
-	if (f2fs_lfs_mode(sbi) && (rw == WRITE)) {
-		if (block_unaligned_IO(inode, iocb, iter))
-			return true;
-		if (F2FS_IO_ALIGNED(sbi))
-			return true;
-	}
-	if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED))
-		return true;
-
-	return false;
-}
-
 static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx)
 {
 	return fsverity_active(inode) &&

fs/f2fs/file.c

@@ -808,6 +808,46 @@ int f2fs_truncate(struct inode *inode)
 	return 0;
 }
 
+static int block_unaligned_IO(struct inode *inode, struct kiocb *iocb,
+			      struct iov_iter *iter)
+{
+	unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
+	unsigned int blocksize_mask = (1 << i_blkbits) - 1;
+	loff_t offset = iocb->ki_pos;
+	unsigned long align = offset | iov_iter_alignment(iter);
+
+	return align & blocksize_mask;
+}
+
+static bool f2fs_force_buffered_io(struct inode *inode,
+				   struct kiocb *iocb, struct iov_iter *iter)
+{
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+	int rw = iov_iter_rw(iter);
+
+	if (!fscrypt_dio_supported(inode))
+		return true;
+	if (fsverity_active(inode))
+		return true;
+	if (f2fs_compressed_file(inode))
+		return true;
+
+	/* disallow direct IO if any of devices has unaligned blksize */
+	if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
+		return true;
+
+	if (f2fs_lfs_mode(sbi) && (rw == WRITE)) {
+		if (block_unaligned_IO(inode, iocb, iter))
+			return true;
+		if (F2FS_IO_ALIGNED(sbi))
+			return true;
+	}
+	if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED))
+		return true;
+
+	return false;
+}
+
 int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
 		 struct kstat *stat, u32 request_mask, unsigned int query_flags)
 {