linux-ext4 - Re: [PATCH 1/2] fs: add FMODE_DIO_PARALLEL

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Date:   Wed, 12 Apr 2023 13:43:55 +0000
From:   Bernd Schubert <bschubert@....com>
To:     "axboe@...nel.dk" <axboe@...nel.dk>
CC:     "io-uring@...r.kernel.org" <io-uring@...r.kernel.org>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
        Dharmendra Singh <dsingh@....com>,
        Miklos Szeredi <miklos@...redi.hu>
Subject: Re: [PATCH 1/2] fs: add FMODE_DIO_PARALLEL_WRITE flag

Sorry, had forgotten to CC Miklos.

On 4/12/23 15:40, Bernd Schubert wrote:
> Miklos, Jens,
> 
> could we please also set this flag for fuse?
> 
> 
> Thanks,
> Bernd
> 
> 
> fuse: Set FMODE_DIO_PARALLEL_WRITE flag
> 
> From: Bernd Schubert <bschubert@....com>
> 
> Fuse can also do parallel DIO writes, if userspace has enabled it.
> 
> Signed-off-by: Bernd Schubert <bschubert@....com>
> ---
>   fs/fuse/file.c |    3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/fs/fuse/file.c b/fs/fuse/file.c
> index 875314ee6f59..46e7f1196fd1 100644
> --- a/fs/fuse/file.c
> +++ b/fs/fuse/file.c
> @@ -215,6 +215,9 @@ void fuse_finish_open(struct inode *inode, struct file *file)
>   	}
>   	if ((file->f_mode & FMODE_WRITE) && fc->writeback_cache)
>   		fuse_link_write_file(file);
> +
> +	if (ff->open_flags & FOPEN_PARALLEL_DIRECT_WRITES)
> +		file->f_mode |= FMODE_DIO_PARALLEL_WRITE;
>   }
>   
>   int fuse_open_common(struct inode *inode, struct file *file, bool isdir)