From 7fc9e4722435cd8459182c4975f48934f2bb1274 Mon Sep 17 00:00:00 2001 From: Goldwyn Rodrigues Date: Tue, 20 Jun 2017 07:05:41 -0500 Subject: fs: Introduce filemap_range_has_page() filemap_range_has_page() return true if the file's mapping has a page within the range mentioned. This function will be used to check if a write() call will cause a writeback of previous writes. Reviewed-by: Christoph Hellwig Reviewed-by: Jan Kara Signed-off-by: Goldwyn Rodrigues Signed-off-by: Jens Axboe --- include/linux/fs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 96a1a1fa54a9..0d34f5b5a6b0 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2518,6 +2518,8 @@ extern int filemap_fdatawait(struct address_space *); extern void filemap_fdatawait_keep_errors(struct address_space *); extern int filemap_fdatawait_range(struct address_space *, loff_t lstart, loff_t lend); +extern bool filemap_range_has_page(struct address_space *, loff_t lstart, + loff_t lend); extern int filemap_write_and_wait(struct address_space *mapping); extern int filemap_write_and_wait_range(struct address_space *mapping, loff_t lstart, loff_t lend); -- cgit v1.2.3