From ab08b01ec0a205d9c98e712eb504c850a51e6fdb Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 17 Oct 2019 13:12:19 -0700 Subject: iomap: move struct iomap_page out of iomap.h Now that all the writepage code is in the iomap code there is no need to keep this structure public. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Reviewed-by: Carlos Maiolino Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/iomap/buffered-io.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'fs/iomap/buffered-io.c') diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 901c1a799238..b5ff54fddf1f 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -21,6 +21,23 @@ #include "../internal.h" +/* + * Structure allocated for each page when block size < PAGE_SIZE to track + * sub-page uptodate status and I/O completions. + */ +struct iomap_page { + atomic_t read_count; + atomic_t write_count; + DECLARE_BITMAP(uptodate, PAGE_SIZE / 512); +}; + +static inline struct iomap_page *to_iomap_page(struct page *page) +{ + if (page_has_private(page)) + return (struct iomap_page *)page_private(page); + return NULL; +} + static struct bio_set iomap_ioend_bioset; static struct iomap_page * -- cgit v1.2.3-70-g09d2