From: Christoph Hellwig <hch@lst.de>
To: Ritesh Harjani <ritesh.list@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>,
tytso@mit.edu, linux-ext4@vger.kernel.org
Subject: Re: [PATCH] ext4: set FMODE_CAN_ODIRECT instead of a dummy direct_IO method
Date: Tue, 13 Jun 2023 07:47:00 +0200 [thread overview]
Message-ID: <20230613054700.GA14648@lst.de> (raw)
In-Reply-To: <87wn0853pw.fsf@doe.com>
On Tue, Jun 13, 2023 at 11:00:19AM +0530, Ritesh Harjani wrote:
> why do we require .direct_IO function op for any of the dax_aops?
> IIUC, any inode if it supports DAX i.e. IS_DAX(inode), then it takes the
> separate path in file read/write iter path.
>
> so it should never do ->direct_IO on an inode which supports DAX right?
do_dentry_open rejects opens with O_DIRECT if FMODE_CAN_ODIRECT is
not set. So we either needs to set that manually or because there is a
->direct_IO if we want to keep supporting O_DIRECT opens for DAX
files, which we've traditionally supported.
next prev parent reply other threads:[~2023-06-13 5:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-12 5:37 [PATCH] ext4: set FMODE_CAN_ODIRECT instead of a dummy direct_IO method Christoph Hellwig
2023-06-13 5:30 ` Ritesh Harjani
2023-06-13 5:47 ` Christoph Hellwig [this message]
2023-06-13 13:57 ` Ritesh Harjani
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