[v2,4/8] fs/mpage: use blocks_per_folio instead of blocks_per_page

Message ID	20250204231209.429356-5-mcgrof@kernel.org (mailing list archive)
State	New
Headers	show Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8FD621C9E0; Tue, 4 Feb 2025 23:12:15 +0000 (UTC) From: Luis Chamberlain <mcgrof@kernel.org> To: hare@suse.de, willy@infradead.org, dave@stgolabs.net, david@fromorbit.com, djwong@kernel.org, kbusch@kernel.org Cc: john.g.garry@oracle.com, hch@lst.de, ritesh.list@gmail.com, linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, gost.dev@samsung.com, p.raghav@samsung.com, da.gomez@samsung.com, kernel@pankajraghav.com, mcgrof@kernel.org Subject: [PATCH v2 4/8] fs/mpage: use blocks_per_folio instead of blocks_per_page Date: Tue, 4 Feb 2025 15:12:05 -0800 Message-ID: <20250204231209.429356-5-mcgrof@kernel.org> In-Reply-To: <20250204231209.429356-1-mcgrof@kernel.org> References: <20250204231209.429356-1-mcgrof@kernel.org> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: Luis Chamberlain <mcgrof@infradead.org>
Series	enable bs > ps for block devices \| expand [v2,0/8] enable bs > ps for block devices [v2,1/8] fs/buffer: simplify block_read_full_folio() with bh_offset() [v2,2/8] fs/buffer: remove batching from async read [v2,3/8] fs/mpage: avoid negative shift for large blocksize [v2,4/8] fs/mpage: use blocks_per_folio instead of blocks_per_page [v2,5/8] fs/buffer fs/mpage: remove large folio restriction [v2,6/8] block/bdev: enable large folio support for large logical block sizes [v2,7/8] block/bdev: lift block size restrictions to 64k [v2,8/8] bdev: use bdev_io_min() for statx block size

diff --git a/fs/mpage.c b/fs/mpage.c index a3c82206977f..c17d7a724e4b 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -107,7 +107,7 @@ static void map_buffer_to_folio(struct folio *folio, struct buffer_head *bh, * don't make any buffers if there is only one buffer on * the folio and the folio just needs to be set up to date */ - if (inode->i_blkbits == PAGE_SHIFT && + if (inode->i_blkbits == folio_shift(folio) && buffer_uptodate(bh)) { folio_mark_uptodate(folio); return; @@ -153,7 +153,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) struct folio *folio = args->folio; struct inode *inode = folio->mapping->host; const unsigned blkbits = inode->i_blkbits; - const unsigned blocks_per_page = PAGE_SIZE >> blkbits; + const unsigned blocks_per_folio = folio_size(folio) >> blkbits; const unsigned blocksize = 1 << blkbits; struct buffer_head *map_bh = &args->map_bh; sector_t block_in_file; @@ -161,7 +161,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) sector_t last_block_in_file; sector_t first_block; unsigned page_block; - unsigned first_hole = blocks_per_page; + unsigned first_hole = blocks_per_folio; struct block_device *bdev = NULL; int length; int fully_mapped = 1; @@ -182,7 +182,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) goto confused; block_in_file = folio_pos(folio) >> blkbits; - last_block = block_in_file + args->nr_pages * blocks_per_page; + last_block = block_in_file + args->nr_pages * blocks_per_folio; last_block_in_file = (i_size_read(inode) + blocksize - 1) >> blkbits; if (last_block > last_block_in_file) last_block = last_block_in_file; @@ -204,7 +204,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) clear_buffer_mapped(map_bh); break; } - if (page_block == blocks_per_page) + if (page_block == blocks_per_folio) break; page_block++; block_in_file++; @@ -216,7 +216,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) * Then do more get_blocks calls until we are done with this folio. */ map_bh->b_folio = folio; - while (page_block < blocks_per_page) { + while (page_block < blocks_per_folio) { map_bh->b_state = 0; map_bh->b_size = 0; @@ -229,7 +229,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) if (!buffer_mapped(map_bh)) { fully_mapped = 0; - if (first_hole == blocks_per_page) + if (first_hole == blocks_per_folio) first_hole = page_block; page_block++; block_in_file++; @@ -247,7 +247,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) goto confused; } - if (first_hole != blocks_per_page) + if (first_hole != blocks_per_folio) goto confused; /* hole -> non-hole */ /* Contiguous blocks? */ @@ -260,7 +260,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) if (relative_block == nblocks) { clear_buffer_mapped(map_bh); break; - } else if (page_block == blocks_per_page) + } else if (page_block == blocks_per_folio) break; page_block++; block_in_file++; @@ -268,7 +268,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) bdev = map_bh->b_bdev; } - if (first_hole != blocks_per_page) { + if (first_hole != blocks_per_folio) { folio_zero_segment(folio, first_hole << blkbits, PAGE_SIZE); if (first_hole == 0) { folio_mark_uptodate(folio); @@ -303,10 +303,10 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args) relative_block = block_in_file - args->first_logical_block; nblocks = map_bh->b_size >> blkbits; if ((buffer_boundary(map_bh) && relative_block == nblocks) || - (first_hole != blocks_per_page)) + (first_hole != blocks_per_folio)) args->bio = mpage_bio_submit_read(args->bio); else - args->last_block_in_bio = first_block + blocks_per_page - 1; + args->last_block_in_bio = first_block + blocks_per_folio - 1; out: return args->bio; @@ -456,12 +456,12 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, struct address_space *mapping = folio->mapping; struct inode *inode = mapping->host; const unsigned blkbits = inode->i_blkbits; - const unsigned blocks_per_page = PAGE_SIZE >> blkbits; + const unsigned blocks_per_folio = folio_size(folio) >> blkbits; sector_t last_block; sector_t block_in_file; sector_t first_block; unsigned page_block; - unsigned first_unmapped = blocks_per_page; + unsigned first_unmapped = blocks_per_folio; struct block_device *bdev = NULL; int boundary = 0; sector_t boundary_block = 0; @@ -486,12 +486,12 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, */ if (buffer_dirty(bh)) goto confused; - if (first_unmapped == blocks_per_page) + if (first_unmapped == blocks_per_folio) first_unmapped = page_block; continue; } - if (first_unmapped != blocks_per_page) + if (first_unmapped != blocks_per_folio) goto confused; /* hole -> non-hole */ if (!buffer_dirty(bh) || !buffer_uptodate(bh)) @@ -536,7 +536,7 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, goto page_is_mapped; last_block = (i_size - 1) >> blkbits; map_bh.b_folio = folio; - for (page_block = 0; page_block < blocks_per_page; ) { + for (page_block = 0; page_block < blocks_per_folio; ) { map_bh.b_state = 0; map_bh.b_size = 1 << blkbits; @@ -618,14 +618,14 @@ static int __mpage_writepage(struct folio *folio, struct writeback_control *wbc, BUG_ON(folio_test_writeback(folio)); folio_start_writeback(folio); folio_unlock(folio); - if (boundary || (first_unmapped != blocks_per_page)) { + if (boundary || (first_unmapped != blocks_per_folio)) { bio = mpage_bio_submit_write(bio); if (boundary_block) { write_boundary_block(boundary_bdev, boundary_block, 1 << blkbits); } } else { - mpd->last_block_in_bio = first_block + blocks_per_page - 1; + mpd->last_block_in_bio = first_block + blocks_per_folio - 1; } goto out;

[v2,4/8] fs/mpage: use blocks_per_folio instead of blocks_per_page

Commit Message

Comments

Patch