From: Dave Chinner <david@fromorbit.com>
To: Allison Henderson <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v24 06/11] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred
Date: Wed, 1 Sep 2021 13:47:54 +1000 [thread overview]
Message-ID: <20210901034754.GW3657114@dread.disaster.area> (raw)
In-Reply-To: <20210824224434.968720-7-allison.henderson@oracle.com>
On Tue, Aug 24, 2021 at 03:44:29PM -0700, Allison Henderson wrote:
> From: Allison Collins <allison.henderson@oracle.com>
>
> These routines set up and queue a new deferred attribute operations.
> These functions are meant to be called by any routine needing to
> initiate a deferred attribute operation as opposed to the existing
> inline operations. New helper function xfs_attr_item_init also added.
>
> Finally enable delayed attributes in xfs_attr_set and xfs_attr_remove.
>
> Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
.....
>
> +STATIC int
> +xfs_attr_item_init(
> + struct xfs_da_args *args,
> + unsigned int op_flags, /* op flag (set or remove) */
> + struct xfs_attr_item **attr) /* new xfs_attr_item */
> +{
> +
> + struct xfs_attr_item *new;
> +
> + new = kmem_zalloc(sizeof(struct xfs_attr_item), KM_NOFS);
In transaction context here so we don't need KM_NOFS.
> + new->xattri_op_flags = op_flags;
> + new->xattri_dac.da_args = args;
> +
> + *attr = new;
> + return 0;
> +}
Why doesn't this just return the object or NULL on allocation
failure? What other error could it ever return?
> +
> +/* Sets an attribute for an inode as a deferred operation */
> +int
> +xfs_attr_set_deferred(
> + struct xfs_da_args *args)
> +{
> + struct xfs_attr_item *new;
> + int error = 0;
> +
> + error = xfs_attr_item_init(args, XFS_ATTR_OP_FLAGS_SET, &new);
> + if (error)
> + return error;
i.e.
attri = xfs_attr_item_init(args, XFS_ATTR_OP_FLAGS_SET);
if (!attri)
return -ENOMEM;
> +
> + xfs_defer_add(args->trans, XFS_DEFER_OPS_TYPE_ATTR, &new->xattri_list);
> +
> + return 0;
> +}
> +
> +/* Removes an attribute for an inode as a deferred operation */
> +int
> +xfs_attr_remove_deferred(
> + struct xfs_da_args *args)
> +{
> +
> + struct xfs_attr_item *new;
> + int error;
> +
> + error = xfs_attr_item_init(args, XFS_ATTR_OP_FLAGS_REMOVE, &new);
> + if (error)
> + return error;
> +
> + xfs_defer_add(args->trans, XFS_DEFER_OPS_TYPE_ATTR, &new->xattri_list);
> +
> + return 0;
> +}
We really should not use "new" as a variable name. As a general
rule, the common pattern set by this file is that xfs_attri_item
objects in a function are named "attri". Just because it's newly
allocated doesn't mean we should use a different convention for
naming xfs_attri_item objects...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
next prev parent reply other threads:[~2021-09-01 3:48 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 22:44 [PATCH v24 00/11] Log Attribute Replay Allison Henderson
2021-08-24 22:44 ` [PATCH v24 01/11] xfs: Return from xfs_attr_set_iter if there are no more rmtblks to process Allison Henderson
2021-08-24 22:44 ` [PATCH v24 02/11] xfs: Capture buffers for delayed ops Allison Henderson
2021-08-27 11:33 ` Chandan Babu R
2021-08-31 18:03 ` Allison Henderson
2021-08-30 17:44 ` Darrick J. Wong
2021-08-31 17:50 ` Allison Henderson
2021-09-18 0:02 ` Darrick J. Wong
2021-08-24 22:44 ` [PATCH v24 03/11] xfs: Set up infrastructure for log atrribute replay Allison Henderson
2021-08-27 14:17 ` Chandan Babu R
2021-08-31 18:03 ` Allison Henderson
2021-08-31 0:48 ` Dave Chinner
2021-08-31 19:03 ` Allison Henderson
2021-08-31 21:52 ` Dave Chinner
2021-09-01 5:34 ` Allison Henderson
2021-08-24 22:44 ` [PATCH v24 04/11] xfs: Implement attr logging and replay Allison Henderson
2021-08-30 7:47 ` Chandan Babu R
2021-08-31 18:11 ` Allison Henderson
2021-08-24 22:44 ` [PATCH v24 05/11] RFC xfs: Skip flip flags for delayed attrs Allison Henderson
2021-08-30 10:15 ` Chandan Babu R
2021-08-31 18:11 ` Allison Henderson
2021-08-24 22:44 ` [PATCH v24 06/11] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2021-08-30 10:27 ` Chandan Babu R
2021-08-31 18:12 ` Allison Henderson
2021-09-01 3:47 ` Dave Chinner [this message]
2021-09-01 5:34 ` Allison Henderson
2021-08-24 22:44 ` [PATCH v24 07/11] xfs: Remove unused xfs_attr_*_args Allison Henderson
2021-08-24 22:44 ` [PATCH v24 08/11] xfs: Add log attribute error tag Allison Henderson
2021-08-24 22:44 ` [PATCH v24 09/11] xfs: Add larp debug option Allison Henderson
2021-08-30 12:03 ` Chandan Babu R
2021-08-31 18:12 ` Allison Henderson
2021-08-24 22:44 ` [PATCH v24 10/11] xfs: Merge xfs_delattr_context into xfs_attr_item Allison Henderson
2021-08-24 22:44 ` [PATCH v24 11/11] xfs: Add helper function xfs_attr_leaf_addname Allison Henderson
2021-08-30 14:17 ` Chandan Babu R
2021-08-31 18:13 ` Allison Henderson
2021-08-31 0:20 ` [PATCH v24 00/11] Log Attribute Replay Dave Chinner
2021-08-31 18:27 ` Allison Henderson
2021-09-01 6:29 ` Dave Chinner
2021-09-01 7:30 ` [PATCH 0/5] xfs: various logged attribute fixes Dave Chinner
2021-09-01 7:30 ` [PATCH 1/5] xfs: fix fallthrough annotations in xfs_attr_set_iter() Dave Chinner
2021-09-01 7:30 ` [PATCH 2/5] xfs: fix flags passed to kvmalloc() by xfs_attri_init() Dave Chinner
2021-09-01 7:30 ` [PATCH 3/5] xfs: hide log iovec alignment constraints Dave Chinner
2021-09-01 7:30 ` [PATCH 4/5] xfs: fix attribute log iovec sizing Dave Chinner
2021-09-01 7:30 ` [PATCH 5/5] [RFC] xfs: don't commit the first deferred transaction without intents Dave Chinner
2021-09-01 21:43 ` [PATCH 0/5] xfs: various logged attribute fixes Allison Henderson
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