From af7628d6ec196999175ecb3fdb38336489b0f88a Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Fri, 17 Nov 2023 16:14:47 +0000 Subject: fs: convert error_remove_page to error_remove_folio There were already assertions that we were not passing a tail page to error_remove_page(), so make the compiler enforce that by converting everything to pass and use a folio. Link: https://lkml.kernel.org/r/20231117161447.2461643-7-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Naoya Horiguchi Signed-off-by: Andrew Morton --- block/fops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block') diff --git a/block/fops.c b/block/fops.c index 0abaac705daf..0bdad1e8d514 100644 --- a/block/fops.c +++ b/block/fops.c @@ -500,7 +500,7 @@ const struct address_space_operations def_blk_aops = { .readahead = blkdev_readahead, .writepages = blkdev_writepages, .is_partially_uptodate = iomap_is_partially_uptodate, - .error_remove_page = generic_error_remove_page, + .error_remove_folio = generic_error_remove_folio, .migrate_folio = filemap_migrate_folio, }; #endif /* CONFIG_BUFFER_HEAD */ -- cgit v1.2.3 From 17bf23a981be9c6629198a76940c777eb5c8c521 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Fri, 15 Dec 2023 20:02:44 +0000 Subject: fs: convert block_write_full_page to block_write_full_folio Convert the function to be compatible with writepage_t so that it can be passed to write_cache_pages() by blkdev. This removes a call to compound_head(). We can also remove the function export as both callers are built-in. Link: https://lkml.kernel.org/r/20231215200245.748418-14-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Reviewed-by: Jens Axboe Signed-off-by: Andrew Morton --- block/fops.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) (limited to 'block') diff --git a/block/fops.c b/block/fops.c index 0bdad1e8d514..0cf8cf72cdfa 100644 --- a/block/fops.c +++ b/block/fops.c @@ -410,9 +410,24 @@ static int blkdev_get_block(struct inode *inode, sector_t iblock, return 0; } -static int blkdev_writepage(struct page *page, struct writeback_control *wbc) +/* + * We cannot call mpage_writepages() as it does not take the buffer lock. + * We must use block_write_full_folio() directly which holds the buffer + * lock. The buffer lock provides the synchronisation with writeback + * that filesystems rely on when they use the blockdev's mapping. + */ +static int blkdev_writepages(struct address_space *mapping, + struct writeback_control *wbc) { - return block_write_full_page(page, blkdev_get_block, wbc); + struct blk_plug plug; + int err; + + blk_start_plug(&plug); + err = write_cache_pages(mapping, wbc, block_write_full_folio, + blkdev_get_block); + blk_finish_plug(&plug); + + return err; } static int blkdev_read_folio(struct file *file, struct folio *folio) @@ -449,7 +464,7 @@ const struct address_space_operations def_blk_aops = { .invalidate_folio = block_invalidate_folio, .read_folio = blkdev_read_folio, .readahead = blkdev_readahead, - .writepage = blkdev_writepage, + .writepages = blkdev_writepages, .write_begin = blkdev_write_begin, .write_end = blkdev_write_end, .migrate_folio = buffer_migrate_folio_norefs, -- cgit v1.2.3