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| author |   Stefan Roesch <shr@fb.com> | 2022-06-23 10:51:50 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-07-24 18:39:31 -0600 |
| commit | 8017553980d0bbfef3e66c583363828565afd6da (patch) | |
| tree | c02bf0bc996e1ba246d94070b937f727109ac9a0 /include/linux/fs.h | |
| parent | iomap: Return -EAGAIN from iomap_write_iter() (diff) | |
| download | wireguard-linux-8017553980d0bbfef3e66c583363828565afd6da.tar.xz wireguard-linux-8017553980d0bbfef3e66c583363828565afd6da.zip | |
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 <shr@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20220623175157.1715274-8-shr@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 3 |
1 files changed, 3 insertions, 0 deletions
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! |