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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-04-20 03:49:57 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-05-07 21:31:10 +0200 |
| commit | f93ee0df51397a9432250798a93d2271ab86bb69 (patch) | |
| tree | e701ab20a010a2efb7778b65ae61e7f95d8f80ee | |
| parent | c94b7349b8592d2787284d470c10a17583c9d205 (diff) | |
| download | linux-f93ee0df51397a9432250798a93d2271ab86bb69.tar.gz linux-f93ee0df51397a9432250798a93d2271ab86bb69.tar.bz2 linux-f93ee0df51397a9432250798a93d2271ab86bb69.zip | |
btrfs: convert super block writes to folio in write_dev_supers()
This is a direct conversion from pages to folios, assuming single page
folio. Also removes some calls to obsolete APIs and some hidden calls to
compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/disk-io.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 5e2293c5b747..9e8d0b86d3e0 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3734,13 +3734,13 @@ struct btrfs_super_block *btrfs_read_dev_super(struct block_device *bdev) /* * Write superblock @sb to the @device. Do not wait for completion, all the - * pages we use for writing are locked. + * folios we use for writing are locked. * * Write @max_mirrors copies of the superblock, where 0 means default that fit * the expected device size at commit time. Note that max_mirrors must be * same for write and wait phases. * - * Return number of errors when page is not found or submission fails. + * Return number of errors when folio is not found or submission fails. */ static int write_dev_supers(struct btrfs_device *device, struct btrfs_super_block *sb, int max_mirrors) @@ -3759,9 +3759,10 @@ static int write_dev_supers(struct btrfs_device *device, shash->tfm = fs_info->csum_shash; for (i = 0; i < max_mirrors; i++) { - struct page *page; + struct folio *folio; struct bio *bio; struct btrfs_super_block *disk_super; + size_t offset; bytenr_orig = btrfs_sb_offset(i); ret = btrfs_sb_log_location(device, i, WRITE, &bytenr); @@ -3784,20 +3785,23 @@ static int write_dev_supers(struct btrfs_device *device, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE, sb->csum); - page = find_or_create_page(mapping, bytenr >> PAGE_SHIFT, - GFP_NOFS); - if (!page) { + folio = __filemap_get_folio(mapping, bytenr >> PAGE_SHIFT, + FGP_LOCK | FGP_ACCESSED | FGP_CREAT, + GFP_NOFS); + if (IS_ERR(folio)) { btrfs_err(device->fs_info, "couldn't get super block page for bytenr %llu", bytenr); errors++; continue; } + ASSERT(folio_order(folio) == 0); /* Bump the refcount for wait_dev_supers() */ - get_page(page); + folio_get(folio); - disk_super = page_address(page); + offset = offset_in_folio(folio, bytenr); + disk_super = folio_address(folio) + offset; memcpy(disk_super, sb, BTRFS_SUPER_INFO_SIZE); /* @@ -3811,8 +3815,7 @@ static int write_dev_supers(struct btrfs_device *device, bio->bi_iter.bi_sector = bytenr >> SECTOR_SHIFT; bio->bi_private = device; bio->bi_end_io = btrfs_end_super_write; - __bio_add_page(bio, page, BTRFS_SUPER_INFO_SIZE, - offset_in_page(bytenr)); + bio_add_folio_nofail(bio, folio, BTRFS_SUPER_INFO_SIZE, offset); /* * We FUA only the first super block. The others we allow to |