Remove a number of implicit calls to compound_head() and various calls to compatibility functions. This is not sufficient to enable support for large folios; generic_perform_write() must be converted first. Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> --- fs/libfs.c | 40 ++++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index dcdcc292bf2b..da78eb64831e 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -815,21 +815,20 @@ int simple_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, struct page **pagep, void **fsdata) { - struct page *page; - pgoff_t index; + struct folio *folio; - index = pos >> PAGE_SHIFT; + folio = __filemap_get_folio(mapping, pos / PAGE_SIZE, FGP_WRITEBEGIN, + mapping_gfp_mask(mapping)); + if (IS_ERR(folio)) + return PTR_ERR(folio); - page = grab_cache_page_write_begin(mapping, index); - if (!page) - return -ENOMEM; - - *pagep = page; + *pagep = &folio->page; - if (!PageUptodate(page) && (len != PAGE_SIZE)) { - unsigned from = pos & (PAGE_SIZE - 1); + if (!folio_test_uptodate(folio) && (len != folio_size(folio))) { + size_t from = offset_in_folio(folio, pos); - zero_user_segments(page, 0, from, from + len, PAGE_SIZE); + folio_zero_segments(folio, 0, from, + from + len, folio_size(folio)); } return 0; } @@ -861,17 +860,18 @@ static int simple_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) { - struct inode *inode = page->mapping->host; + struct folio *folio = page_folio(page); + struct inode *inode = folio->mapping->host; loff_t last_pos = pos + copied; - /* zero the stale part of the page if we did a short copy */ - if (!PageUptodate(page)) { + /* zero the stale part of the folio if we did a short copy */ + if (!folio_test_uptodate(folio)) { if (copied < len) { - unsigned from = pos & (PAGE_SIZE - 1); + size_t from = offset_in_folio(folio, pos); - zero_user(page, from + copied, len - copied); + folio_zero_range(folio, from + copied, len - copied); } - SetPageUptodate(page); + folio_mark_uptodate(folio); } /* * No need to use i_size_read() here, the i_size @@ -880,9 +880,9 @@ static int simple_write_end(struct file *file, struct address_space *mapping, if (last_pos > inode->i_size) i_size_write(inode, last_pos); - set_page_dirty(page); - unlock_page(page); - put_page(page); + folio_mark_dirty(folio); + folio_unlock(folio); + folio_put(folio); return copied; } -- 2.40.1