linux-kernel - Re: [PATCH v4 10/11] fs/9p: writeback mode fixes

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Date:   Sat, 18 Feb 2023 17:38:06 +0900
From:   asmadeus@...ewreck.org
To:     Eric Van Hensbergen <ericvh@...nel.org>
Cc:     v9fs-developer@...ts.sourceforge.net, rminnich@...il.com,
        lucho@...kov.net, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux_oss@...debyte.com
Subject: Re: [PATCH v4 10/11] fs/9p: writeback mode fixes

(not reviewed this yet, just a kerneldoc warning first before I forget)

Eric Van Hensbergen wrote on Sat, Feb 18, 2023 at 12:33:22AM +0000:
> diff --git a/fs/9p/fid.c b/fs/9p/fid.c
> index 805151114e96..8c1697619f3d 100644
> --- a/fs/9p/fid.c
> +++ b/fs/9p/fid.c
> @@ -41,14 +40,24 @@ void v9fs_fid_add(struct dentry *dentry, struct p9_fid **pfid)
>  	*pfid = NULL;
>  }
>  
> +static bool v9fs_is_writeable(int mode)
> +{
> +	if ((mode & P9_OWRITE) || (mode & P9_ORDWR))
> +		return true;
> +	else
> +		return false;
> +}
> +
>  /**
>   * v9fs_fid_find_inode - search for an open fid off of the inode list
>   * @inode: return a fid pointing to a specific inode
> + * @writeable: only consider fids which are writeable

`make M=fs/9p W=1` complains about doc discreptancy here,
writeable vs. want_writeable.

These are a pain, but let's make sure new ones don't creep in...
(I just wish we could make W=1 the default for part of the subtree, but
I didn't find an easy way to do so last time I checked -- perhaps you'll
have more luck if you have time to look)

>   * @uid: return a fid belonging to the specified user
> + * @any: ignore uid as a selection criteria
>   *
>   */
> -
> -static struct p9_fid *v9fs_fid_find_inode(struct inode *inode, kuid_t uid)
> +struct p9_fid *v9fs_fid_find_inode(struct inode *inode, bool want_writeable,
> +	kuid_t uid, bool any)

-- 
Dominique