Merge tag 'for-5.18/alloc-cleanups-2022-03-18' of git://git.kernel.dk/linux-block

Pull bio_alloc() cleanups from Jens Axboe:
 "Filesystem cleanups to pass the bio op to bio_alloc() instead of
  setting it just before bio submission".

* tag 'for-5.18/alloc-cleanups-2022-03-18' of git://git.kernel.dk/linux-block:
  f2fs: pass the bio operation to bio_alloc_bioset
  f2fs: don't pass a bio to f2fs_target_device
  nilfs2: pass the operation to bio_alloc
  ext4: pass the operation to bio_alloc
  mpage: pass the operation to bio_alloc

fs/ext4/page-io.c

@@ -371,10 +371,9 @@ void ext4_io_submit(struct ext4_io_submit *io)
 	struct bio *bio = io->io_bio;
 
 	if (bio) {
-		int io_op_flags = io->io_wbc->sync_mode == WB_SYNC_ALL ?
-				  REQ_SYNC : 0;
+		if (io->io_wbc->sync_mode == WB_SYNC_ALL)
+			io->io_bio->bi_opf |= REQ_SYNC;
 		io->io_bio->bi_write_hint = io->io_end->inode->i_write_hint;
-		bio_set_op_attrs(io->io_bio, REQ_OP_WRITE, io_op_flags);
 		submit_bio(io->io_bio);
 	}
 	io->io_bio = NULL;
@@ -397,7 +396,7 @@ static void io_submit_init_bio(struct ext4_io_submit *io,
 	 * bio_alloc will _always_ be able to allocate a bio if
 	 * __GFP_DIRECT_RECLAIM is set, see comments for bio_alloc_bioset().
 	 */
-	bio = bio_alloc(bh->b_bdev, BIO_MAX_VECS, 0, GFP_NOIO);
+	bio = bio_alloc(bh->b_bdev, BIO_MAX_VECS, REQ_OP_WRITE, GFP_NOIO);
 	fscrypt_set_bio_crypt_ctx_bh(bio, bh, GFP_NOIO);
 	bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
 	bio->bi_end_io = ext4_end_bio;

fs/f2fs/data.c

@@ -354,7 +354,7 @@ static void f2fs_write_end_io(struct bio *bio)
 }
 
 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
-				block_t blk_addr, struct bio *bio)
+		block_t blk_addr, sector_t *sector)
 {
 	struct block_device *bdev = sbi->sb->s_bdev;
 	int i;
@@ -369,10 +369,9 @@ struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
 			}
 		}
 	}
-	if (bio) {
-		bio_set_dev(bio, bdev);
-		bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr);
-	}
+
+	if (sector)
+		*sector = SECTOR_FROM_BLOCK(blk_addr);
 	return bdev;
 }
 
@@ -389,14 +388,40 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
 	return 0;
 }
 
+static void __attach_io_flag(struct f2fs_io_info *fio, unsigned int io_flag)
+{
+	unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1;
+	unsigned int fua_flag = io_flag & temp_mask;
+	unsigned int meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask;
+
+	/*
+	 * data/node io flag bits per temp:
+	 *      REQ_META     |      REQ_FUA      |
+	 *    5 |    4 |   3 |    2 |    1 |   0 |
+	 * Cold | Warm | Hot | Cold | Warm | Hot |
+	 */
+	if ((1 << fio->temp) & meta_flag)
+		fio->op_flags |= REQ_META;
+	if ((1 << fio->temp) & fua_flag)
+		fio->op_flags |= REQ_FUA;
+}
+
 static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
 {
 	struct f2fs_sb_info *sbi = fio->sbi;
+	struct block_device *bdev;
+	sector_t sector;
 	struct bio *bio;
 
-	bio = bio_alloc_bioset(NULL, npages, 0, GFP_NOIO, &f2fs_bioset);
+	if (fio->type == DATA)
+		__attach_io_flag(fio, sbi->data_io_flag);
+	else if (fio->type == NODE)
+		__attach_io_flag(fio, sbi->node_io_flag);
 
-	f2fs_target_device(sbi, fio->new_blkaddr, bio);
+	bdev = f2fs_target_device(sbi, fio->new_blkaddr, &sector);
+	bio = bio_alloc_bioset(bdev, npages, fio->op | fio->op_flags, GFP_NOIO,
+			       &f2fs_bioset);
+	bio->bi_iter.bi_sector = sector;
 	if (is_read_io(fio->op)) {
 		bio->bi_end_io = f2fs_read_end_io;
 		bio->bi_private = NULL;
@@ -500,34 +525,6 @@ void f2fs_submit_bio(struct f2fs_sb_info *sbi,
 	__submit_bio(sbi, bio, type);
 }
 
-static void __attach_io_flag(struct f2fs_io_info *fio)
-{
-	struct f2fs_sb_info *sbi = fio->sbi;
-	unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1;
-	unsigned int io_flag, fua_flag, meta_flag;
-
-	if (fio->type == DATA)
-		io_flag = sbi->data_io_flag;
-	else if (fio->type == NODE)
-		io_flag = sbi->node_io_flag;
-	else
-		return;
-
-	fua_flag = io_flag & temp_mask;
-	meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask;
-
-	/*
-	 * data/node io flag bits per temp:
-	 *      REQ_META     |      REQ_FUA      |
-	 *    5 |    4 |   3 |    2 |    1 |   0 |
-	 * Cold | Warm | Hot | Cold | Warm | Hot |
-	 */
-	if ((1 << fio->temp) & meta_flag)
-		fio->op_flags |= REQ_META;
-	if ((1 << fio->temp) & fua_flag)
-		fio->op_flags |= REQ_FUA;
-}
-
 static void __submit_merged_bio(struct f2fs_bio_info *io)
 {
 	struct f2fs_io_info *fio = &io->fio;
@@ -535,9 +532,6 @@ static void __submit_merged_bio(struct f2fs_bio_info *io)
 	if (!io->bio)
 		return;
 
-	__attach_io_flag(fio);
-	bio_set_op_attrs(io->bio, fio->op, fio->op_flags);
-
 	if (is_read_io(fio->op))
 		trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio);
 	else
@@ -595,10 +589,9 @@ static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi,
 	/* change META to META_FLUSH in the checkpoint procedure */
 	if (type >= META_FLUSH) {
 		io->fio.type = META_FLUSH;
-		io->fio.op = REQ_OP_WRITE;
-		io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC;
+		io->bio->bi_opf |= REQ_META | REQ_PRIO | REQ_SYNC;
 		if (!test_opt(sbi, NOBARRIER))
-			io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
+			io->bio->bi_opf |= REQ_PREFLUSH | REQ_FUA;
 	}
 	__submit_merged_bio(io);
 	up_write(&io->io_rwsem);
@@ -679,9 +672,6 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
 	if (fio->io_wbc && !is_read_io(fio->op))
 		wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE);
 
-	__attach_io_flag(fio);
-	bio_set_op_attrs(bio, fio->op, fio->op_flags);
-
 	inc_page_count(fio->sbi, is_read_io(fio->op) ?
 			__read_io_type(page): WB_DATA_TYPE(fio->page));
 
@@ -875,10 +865,8 @@ int f2fs_merge_page_bio(struct f2fs_io_info *fio)
 alloc_new:
 	if (!bio) {
 		bio = __bio_alloc(fio, BIO_MAX_VECS);
-		__attach_io_flag(fio);
 		f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
 				       fio->page->index, fio, GFP_NOIO);
-		bio_set_op_attrs(bio, fio->op, fio->op_flags);
 
 		add_bio_entry(fio->sbi, bio, page, fio->temp);
 	} else {
@@ -984,15 +972,16 @@ static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
 	struct bio *bio;
 	struct bio_post_read_ctx *ctx = NULL;
 	unsigned int post_read_steps = 0;
+	sector_t sector;
+	struct block_device *bdev = f2fs_target_device(sbi, blkaddr, &sector);
 
-	bio = bio_alloc_bioset(NULL, bio_max_segs(nr_pages), REQ_OP_READ,
+	bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages),
+			       REQ_OP_READ | op_flag,
 			       for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset);
 	if (!bio)
 		return ERR_PTR(-ENOMEM);
-
+	bio->bi_iter.bi_sector = sector;
 	f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS);
-
-	f2fs_target_device(sbi, blkaddr, bio);
 	bio->bi_end_io = f2fs_read_end_io;
 
 	if (fscrypt_inode_uses_fs_layer_crypto(inode))

fs/f2fs/f2fs.h

@@ -3631,7 +3631,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio);
 int f2fs_merge_page_bio(struct f2fs_io_info *fio);
 void f2fs_submit_page_write(struct f2fs_io_info *fio);
 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
-			block_t blk_addr, struct bio *bio);
+		block_t blk_addr, sector_t *sector);
 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
 void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);

fs/mpage.c

@@ -57,10 +57,9 @@ static void mpage_end_io(struct bio *bio)
 	bio_put(bio);
 }
 
-static struct bio *mpage_bio_submit(int op, int op_flags, struct bio *bio)
+static struct bio *mpage_bio_submit(struct bio *bio)
 {
 	bio->bi_end_io = mpage_end_io;
-	bio_set_op_attrs(bio, op, op_flags);
 	guard_bio_eod(bio);
 	submit_bio(bio);
 	return NULL;
@@ -146,16 +145,15 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
 	struct block_device *bdev = NULL;
 	int length;
 	int fully_mapped = 1;
-	int op_flags;
+	int op = REQ_OP_READ;
 	unsigned nblocks;
 	unsigned relative_block;
 	gfp_t gfp;
 
 	if (args->is_readahead) {
-		op_flags = REQ_RAHEAD;
+		op |= REQ_RAHEAD;
 		gfp = readahead_gfp_mask(page->mapping);
 	} else {
-		op_flags = 0;
 		gfp = mapping_gfp_constraint(page->mapping, GFP_KERNEL);
 	}
 
@@ -264,7 +262,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
 	 * This page will go to BIO.  Do we need to send this BIO off first?
 	 */
 	if (args->bio && (args->last_block_in_bio != blocks[0] - 1))
-		args->bio = mpage_bio_submit(REQ_OP_READ, op_flags, args->bio);
+		args->bio = mpage_bio_submit(args->bio);
 
 alloc_new:
 	if (args->bio == NULL) {
@@ -273,7 +271,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
 								page))
 				goto out;
 		}
-		args->bio = bio_alloc(bdev, bio_max_segs(args->nr_pages), 0,
+		args->bio = bio_alloc(bdev, bio_max_segs(args->nr_pages), op,
 				      gfp);
 		if (args->bio == NULL)
 			goto confused;
@@ -282,7 +280,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
 
 	length = first_hole << blkbits;
 	if (bio_add_page(args->bio, page, length, 0) < length) {
-		args->bio = mpage_bio_submit(REQ_OP_READ, op_flags, args->bio);
+		args->bio = mpage_bio_submit(args->bio);
 		goto alloc_new;
 	}
 
@@ -290,7 +288,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
 	nblocks = map_bh->b_size >> blkbits;
 	if ((buffer_boundary(map_bh) && relative_block == nblocks) ||
 	    (first_hole != blocks_per_page))
-		args->bio = mpage_bio_submit(REQ_OP_READ, op_flags, args->bio);
+		args->bio = mpage_bio_submit(args->bio);
 	else
 		args->last_block_in_bio = blocks[blocks_per_page - 1];
 out:
@@ -298,7 +296,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
 
 confused:
 	if (args->bio)
-		args->bio = mpage_bio_submit(REQ_OP_READ, op_flags, args->bio);
+		args->bio = mpage_bio_submit(args->bio);
 	if (!PageUptodate(page))
 		block_read_full_page(page, args->get_block);
 	else
@@ -361,7 +359,7 @@ void mpage_readahead(struct readahead_control *rac, get_block_t get_block)
 		put_page(page);
 	}
 	if (args.bio)
-		mpage_bio_submit(REQ_OP_READ, REQ_RAHEAD, args.bio);
+		mpage_bio_submit(args.bio);
 }
 EXPORT_SYMBOL(mpage_readahead);
 
@@ -378,7 +376,7 @@ int mpage_readpage(struct page *page, get_block_t get_block)
 
 	args.bio = do_mpage_readpage(&args);
 	if (args.bio)
-		mpage_bio_submit(REQ_OP_READ, 0, args.bio);
+		mpage_bio_submit(args.bio);
 	return 0;
 }
 EXPORT_SYMBOL(mpage_readpage);
@@ -469,7 +467,6 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
 	struct buffer_head map_bh;
 	loff_t i_size = i_size_read(inode);
 	int ret = 0;
-	int op_flags = wbc_to_write_flags(wbc);
 
 	if (page_has_buffers(page)) {
 		struct buffer_head *head = page_buffers(page);
@@ -577,7 +574,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
 	 * This page will go to BIO.  Do we need to send this BIO off first?
 	 */
 	if (bio && mpd->last_block_in_bio != blocks[0] - 1)
-		bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
+		bio = mpage_bio_submit(bio);
 
 alloc_new:
 	if (bio == NULL) {
@@ -586,9 +583,10 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
 								page, wbc))
 				goto out;
 		}
-		bio = bio_alloc(bdev, BIO_MAX_VECS, 0, GFP_NOFS);
+		bio = bio_alloc(bdev, BIO_MAX_VECS,
+				REQ_OP_WRITE | wbc_to_write_flags(wbc),
+				GFP_NOFS);
 		bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9);
-
 		wbc_init_bio(wbc, bio);
 		bio->bi_write_hint = inode->i_write_hint;
 	}
@@ -601,7 +599,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
 	wbc_account_cgroup_owner(wbc, page, PAGE_SIZE);
 	length = first_unmapped << blkbits;
 	if (bio_add_page(bio, page, length, 0) < length) {
-		bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
+		bio = mpage_bio_submit(bio);
 		goto alloc_new;
 	}
 
@@ -611,7 +609,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
 	set_page_writeback(page);
 	unlock_page(page);
 	if (boundary || (first_unmapped != blocks_per_page)) {
-		bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
+		bio = mpage_bio_submit(bio);
 		if (boundary_block) {
 			write_boundary_block(boundary_bdev,
 					boundary_block, 1 << blkbits);
@@ -623,7 +621,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
 
 confused:
 	if (bio)
-		bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
+		bio = mpage_bio_submit(bio);
 
 	if (mpd->use_writepage) {
 		ret = mapping->a_ops->writepage(page, wbc);
@@ -679,11 +677,8 @@ mpage_writepages(struct address_space *mapping,
 		};
 
 		ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd);
-		if (mpd.bio) {
-			int op_flags = (wbc->sync_mode == WB_SYNC_ALL ?
-				  REQ_SYNC : 0);
-			mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio);
-		}
+		if (mpd.bio)
+			mpage_bio_submit(mpd.bio);
 	}
 	blk_finish_plug(&plug);
 	return ret;
@@ -700,11 +695,8 @@ int mpage_writepage(struct page *page, get_block_t get_block,
 		.use_writepage = 0,
 	};
 	int ret = __mpage_writepage(page, wbc, &mpd);
-	if (mpd.bio) {
-		int op_flags = (wbc->sync_mode == WB_SYNC_ALL ?
-			  REQ_SYNC : 0);
-		mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio);
-	}
+	if (mpd.bio)
+		mpage_bio_submit(mpd.bio);
 	return ret;
 }
 EXPORT_SYMBOL(mpage_writepage);

fs/nilfs2/segbuf.c

@@ -337,8 +337,7 @@ static void nilfs_end_bio_write(struct bio *bio)
 }
 
 static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
-				   struct nilfs_write_info *wi, int mode,
-				   int mode_flags)
+				   struct nilfs_write_info *wi)
 {
 	struct bio *bio = wi->bio;
 	int err;
@@ -356,7 +355,6 @@ static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
 
 	bio->bi_end_io = nilfs_end_bio_write;
 	bio->bi_private = segbuf;
-	bio_set_op_attrs(bio, mode, mode_flags);
 	submit_bio(bio);
 	segbuf->sb_nbio++;
 
@@ -384,15 +382,15 @@ static void nilfs_segbuf_prepare_write(struct nilfs_segment_buffer *segbuf,
 
 static int nilfs_segbuf_submit_bh(struct nilfs_segment_buffer *segbuf,
 				  struct nilfs_write_info *wi,
-				  struct buffer_head *bh, int mode)
+				  struct buffer_head *bh)
 {
 	int len, err;
 
 	BUG_ON(wi->nr_vecs <= 0);
  repeat:
 	if (!wi->bio) {
-		wi->bio = bio_alloc(wi->nilfs->ns_bdev, wi->nr_vecs, 0,
-				    GFP_NOIO);
+		wi->bio = bio_alloc(wi->nilfs->ns_bdev, wi->nr_vecs,
+				    REQ_OP_WRITE, GFP_NOIO);
 		wi->bio->bi_iter.bi_sector = (wi->blocknr + wi->end) <<
 			(wi->nilfs->ns_blocksize_bits - 9);
 	}
@@ -403,7 +401,7 @@ static int nilfs_segbuf_submit_bh(struct nilfs_segment_buffer *segbuf,
 		return 0;
 	}
 	/* bio is FULL */
-	err = nilfs_segbuf_submit_bio(segbuf, wi, mode, 0);
+	err = nilfs_segbuf_submit_bio(segbuf, wi);
 	/* never submit current bh */
 	if (likely(!err))
 		goto repeat;
@@ -433,13 +431,13 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
 	nilfs_segbuf_prepare_write(segbuf, &wi);
 
 	list_for_each_entry(bh, &segbuf->sb_segsum_buffers, b_assoc_buffers) {
-		res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
+		res = nilfs_segbuf_submit_bh(segbuf, &wi, bh);
 		if (unlikely(res))
 			goto failed_bio;
 	}
 
 	list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
-		res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
+		res = nilfs_segbuf_submit_bh(segbuf, &wi, bh);
 		if (unlikely(res))
 			goto failed_bio;
 	}
@@ -449,8 +447,8 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
 		 * Last BIO is always sent through the following
 		 * submission.
 		 */
-		res = nilfs_segbuf_submit_bio(segbuf, &wi, REQ_OP_WRITE,
-					      REQ_SYNC);
+		wi.bio->bi_opf |= REQ_SYNC;
+		res = nilfs_segbuf_submit_bio(segbuf, &wi);
 	}
 
  failed_bio: