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Message-ID: <d8f73bc9fef19dd90de537376f11f9f26daccbeb.1730437365.git.ritesh.list@gmail.com> Date: Fri, 1 Nov 2024 12:20:53 +0530 From: "Ritesh Harjani (IBM)" <ritesh.list@...il.com> To: linux-ext4@...r.kernel.org Cc: Theodore Ts'o <tytso@....edu>, Jan Kara <jack@...e.cz>, "Darrick J . Wong" <djwong@...nel.org>, Christoph Hellwig <hch@...radead.org>, John Garry <john.g.garry@...cle.com>, Ojaswin Mujoo <ojaswin@...ux.ibm.com>, Dave Chinner <david@...morbit.com>, linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org, "Ritesh Harjani (IBM)" <ritesh.list@...il.com> Subject: [PATCH v4 3/4] ext4: Support setting FMODE_CAN_ATOMIC_WRITE FS needs to add the fmode capability in order to support atomic writes during file open (refer kiocb_set_rw_flags()). Set this capability on a regular file if ext4 can do atomic write. Reviewed-by: John Garry <john.g.garry@...cle.com> Reviewed-by: Darrick J. Wong <djwong@...nel.org> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com> --- fs/ext4/file.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index a7b9b9751a3f..96d936f5584b 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -898,6 +898,9 @@ static int ext4_file_open(struct inode *inode, struct file *filp) return ret; } + if (ext4_inode_can_atomic_write(inode)) + filp->f_mode |= FMODE_CAN_ATOMIC_WRITE; + filp->f_mode |= FMODE_NOWAIT | FMODE_CAN_ODIRECT; return dquot_file_open(inode, filp); } -- 2.46.0
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