From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Allison Henderson <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v14 08/15] xfs: Handle krealloc errors in xlog_recover_add_to_cont_trans
Date: Mon, 4 Jan 2021 21:38:07 -0800 [thread overview]
Message-ID: <20210105053807.GU6918@magnolia> (raw)
In-Reply-To: <20201218072917.16805-9-allison.henderson@oracle.com>
On Fri, Dec 18, 2020 at 12:29:10AM -0700, Allison Henderson wrote:
> Because xattrs can be over a page in size, we need to handle possible
> krealloc errors to avoid warnings
Which warnings?
> Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
> ---
> fs/xfs/xfs_log_recover.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
> index 97f3130..295a5c6 100644
> --- a/fs/xfs/xfs_log_recover.c
> +++ b/fs/xfs/xfs_log_recover.c
> @@ -2061,7 +2061,10 @@ xlog_recover_add_to_cont_trans(
> old_ptr = item->ri_buf[item->ri_cnt-1].i_addr;
> old_len = item->ri_buf[item->ri_cnt-1].i_len;
>
> - ptr = krealloc(old_ptr, len + old_len, GFP_KERNEL | __GFP_NOFAIL);
> + ptr = krealloc(old_ptr, len + old_len, GFP_KERNEL);
Does the removal of NOFAIL increase the likelihood that log recovery
will fail instead of looping around looking for more memory?
Hm, what /are/ we doing here, anyway? I guess someone logged a gigantic
xattri item, which gets split across multiple log records, and now we're
trying to staple all that back together? And perhaps the xattri item is
larger than a ... page(?) which causes dmesg warnings when combined with
NOFAIL?
--D
> + if (ptr == NULL)
> + return -ENOMEM;
> +
> memcpy(&ptr[old_len], dp, len);
> item->ri_buf[item->ri_cnt-1].i_len += len;
> item->ri_buf[item->ri_cnt-1].i_addr = ptr;
> --
> 2.7.4
>
next prev parent reply other threads:[~2021-01-05 5:39 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-18 7:29 [PATCH v14 00/15] xfs: Delayed Attributes Allison Henderson
2020-12-18 7:29 ` [PATCH v14 01/15] xfs: Add helper xfs_attr_node_remove_step Allison Henderson
2020-12-21 6:45 ` Chandan Babu R
2020-12-21 23:48 ` Allison Henderson
2020-12-22 16:50 ` Brian Foster
2020-12-18 7:29 ` [PATCH v14 02/15] xfs: Add xfs_attr_node_remove_cleanup Allison Henderson
2020-12-21 6:45 ` Chandan Babu R
2020-12-21 23:47 ` Allison Henderson
2020-12-22 16:50 ` Brian Foster
2020-12-18 7:29 ` [PATCH v14 03/15] xfs: Hoist transaction handling in xfs_attr_node_remove_step Allison Henderson
2020-12-21 6:45 ` Chandan Babu R
2020-12-21 21:51 ` Allison Henderson
2020-12-18 7:29 ` [PATCH v14 04/15] xfs: Add delay ready attr remove routines Allison Henderson
2020-12-22 7:22 ` Chandan Babu R
2020-12-22 15:41 ` Allison Henderson
2020-12-23 4:05 ` Chandan Babu R
2020-12-22 17:11 ` Brian Foster
2020-12-22 17:20 ` Brian Foster
2020-12-22 18:44 ` Brian Foster
2020-12-23 5:20 ` Allison Henderson
2020-12-23 14:16 ` Brian Foster
2020-12-24 8:23 ` Allison Henderson
2021-01-04 17:52 ` Brian Foster
2021-01-05 18:10 ` Allison Henderson
2021-01-06 14:25 ` Brian Foster
2020-12-18 7:29 ` [PATCH v14 05/15] xfs: Add delay ready attr set routines Allison Henderson
2020-12-23 8:00 ` Chandan Babu R
2020-12-23 16:31 ` Allison Henderson
2020-12-18 7:29 ` [PATCH v14 06/15] xfs: Add state machine tracepoints Allison Henderson
2021-01-05 4:50 ` Chandan Babu R
2021-01-05 21:06 ` Allison Henderson
2021-01-05 5:28 ` Darrick J. Wong
2021-01-05 21:07 ` Allison Henderson
2020-12-18 7:29 ` [PATCH v14 07/15] xfs: Rename __xfs_attr_rmtval_remove Allison Henderson
2020-12-18 7:29 ` [PATCH v14 08/15] xfs: Handle krealloc errors in xlog_recover_add_to_cont_trans Allison Henderson
2021-01-05 5:38 ` Darrick J. Wong [this message]
2021-01-05 20:15 ` Allison Henderson
2020-12-18 7:29 ` [PATCH v14 09/15] xfs: Set up infastructure for deferred attribute operations Allison Henderson
2020-12-18 7:29 ` [PATCH v14 10/15] xfs: Skip flip flags for delayed attrs Allison Henderson
2020-12-18 7:29 ` [PATCH v14 11/15] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2020-12-18 7:29 ` [PATCH v14 12/15] xfs: Remove unused xfs_attr_*_args Allison Henderson
2020-12-18 7:29 ` [PATCH v14 13/15] xfs: Add delayed attributes error tag Allison Henderson
2020-12-18 7:29 ` [PATCH v14 14/15] xfs: Add delattr mount option Allison Henderson
2021-01-05 5:46 ` Darrick J. Wong
2021-01-05 21:49 ` Allison Henderson
2020-12-18 7:29 ` [PATCH v14 15/15] xfs: Merge xfs_delattr_context into xfs_attr_item Allison Henderson
2021-01-05 5:47 ` Darrick J. Wong
2021-01-05 21:07 ` Allison Henderson
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