From 4f8cf60ac18bee62e8c58654a300eb44b96caf09 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Tue, 5 Mar 2024 18:52:05 +0000 Subject: [PATCH] reiserfs: Convert to writepages Use buffer_migrate_folio to handle folio migration instead of writing out dirty pages and reading them back in again. Use writepages to write out folios more efficiently. We now only do that wait_on_write_block check once per call to writepages instead of once per page. It would be possible to do one transaction per writeback run, but that's a bit of a big change to do to this old filesystem, so leave it as one transaction per folio (and leave reiserfs supporting only one page per folio). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Jan Kara Signed-off-by: Jan Kara Message-Id: <20240305185208.1200166-1-willy@infradead.org> --- fs/reiserfs/inode.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 1d825459ee6e..c1daedc50f4c 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -2503,8 +2503,8 @@ static int map_block_for_writepage(struct inode *inode, * start/recovery path as __block_write_full_folio, along with special * code to handle reiserfs tails. */ -static int reiserfs_write_full_folio(struct folio *folio, - struct writeback_control *wbc) +static int reiserfs_write_folio(struct folio *folio, + struct writeback_control *wbc, void *data) { struct inode *inode = folio->mapping->host; unsigned long end_index = inode->i_size >> PAGE_SHIFT; @@ -2721,12 +2721,11 @@ static int reiserfs_read_folio(struct file *f, struct folio *folio) return block_read_full_folio(folio, reiserfs_get_block); } -static int reiserfs_writepage(struct page *page, struct writeback_control *wbc) +static int reiserfs_writepages(struct address_space *mapping, + struct writeback_control *wbc) { - struct folio *folio = page_folio(page); - struct inode *inode = folio->mapping->host; - reiserfs_wait_on_write_block(inode->i_sb); - return reiserfs_write_full_folio(folio, wbc); + reiserfs_wait_on_write_block(mapping->host->i_sb); + return write_cache_pages(mapping, wbc, reiserfs_write_folio, NULL); } static void reiserfs_truncate_failed_write(struct inode *inode) @@ -3405,7 +3404,7 @@ int reiserfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, } const struct address_space_operations reiserfs_address_space_operations = { - .writepage = reiserfs_writepage, + .writepages = reiserfs_writepages, .read_folio = reiserfs_read_folio, .readahead = reiserfs_readahead, .release_folio = reiserfs_release_folio, @@ -3415,4 +3414,5 @@ const struct address_space_operations reiserfs_address_space_operations = { .bmap = reiserfs_aop_bmap, .direct_IO = reiserfs_direct_IO, .dirty_folio = reiserfs_dirty_folio, + .migrate_folio = buffer_migrate_folio, };