From 8017553980d0bbfef3e66c583363828565afd6da Mon Sep 17 00:00:00 2001 From: Stefan Roesch Date: Thu, 23 Jun 2022 10:51:50 -0700 Subject: fs: add a FMODE_BUF_WASYNC flags for f_mode This introduces the flag FMODE_BUF_WASYNC. If devices support async buffered writes, this flag can be set. It also modifies the check in generic_write_checks to take async buffered writes into consideration. Signed-off-by: Stefan Roesch Reviewed-by: Christoph Hellwig Reviewed-by: Christian Brauner (Microsoft) Reviewed-by: Darrick J. Wong Link: https://lore.kernel.org/r/20220623175157.1715274-8-shr@fb.com Signed-off-by: Jens Axboe --- include/linux/fs.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 9ad5e3520fae..bc84847c201e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -180,6 +180,9 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, /* File supports async buffered reads */ #define FMODE_BUF_RASYNC ((__force fmode_t)0x40000000) +/* File supports async nowait buffered writes */ +#define FMODE_BUF_WASYNC ((__force fmode_t)0x80000000) + /* * Attribute flags. These should be or-ed together to figure out what * has been changed! -- cgit v1.2.3