From: Brian Foster <bfoster@redhat.com>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
linux-xfs@vger.kernel.org, hch@infradead.org,
david@fromorbit.com
Subject: Re: [PATCH 12/12] xfs: flush speculative space allocations when we run out of space
Date: Tue, 2 Feb 2021 10:39:22 -0500 [thread overview]
Message-ID: <20210202153922.GJ3336100@bfoster> (raw)
In-Reply-To: <161214519414.140945.335722903527111632.stgit@magnolia>
On Sun, Jan 31, 2021 at 06:06:34PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
>
> If a fs modification (creation, file write, reflink, etc.) is unable to
> reserve enough space to handle the modification, try clearing whatever
> space the filesystem might have been hanging onto in the hopes of
> speeding up the filesystem. The flushing behavior will become
> particularly important when we add deferred inode inactivation because
> that will increase the amount of space that isn't actively tied to user
> data.
>
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> ---
Reviewed-by: Brian Foster <bfoster@redhat.com>
> fs/xfs/xfs_trans.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
>
> diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
> index 3203841ab19b..973354647298 100644
> --- a/fs/xfs/xfs_trans.c
> +++ b/fs/xfs/xfs_trans.c
> @@ -289,6 +289,17 @@ xfs_trans_alloc(
> tp->t_firstblock = NULLFSBLOCK;
>
> error = xfs_trans_reserve(tp, resp, blocks, rtextents);
> + if (error == -ENOSPC) {
> + /*
> + * We weren't able to reserve enough space for the transaction.
> + * Flush the other speculative space allocations to free space.
> + * Do not perform a synchronous scan because callers can hold
> + * other locks.
> + */
> + error = xfs_blockgc_free_space(mp, NULL);
> + if (!error)
> + error = xfs_trans_reserve(tp, resp, blocks, rtextents);
> + }
> if (error) {
> xfs_trans_cancel(tp);
> return error;
>
next prev parent reply other threads:[~2021-02-02 15:44 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 2:05 [PATCHSET v7 00/12] xfs: try harder to reclaim space when we run out Darrick J. Wong
2021-02-01 2:05 ` [PATCH 01/12] xfs: trigger all block gc scans when low on quota space Darrick J. Wong
2021-02-01 2:05 ` [PATCH 02/12] xfs: don't stall cowblocks scan if we can't take locks Darrick J. Wong
2021-02-01 2:05 ` [PATCH 03/12] xfs: xfs_inode_free_quota_blocks should scan project quota Darrick J. Wong
2021-02-01 2:05 ` [PATCH 04/12] xfs: move and rename xfs_inode_free_quota_blocks to avoid conflicts Darrick J. Wong
2021-02-01 2:05 ` [PATCH 05/12] xfs: pass flags and return gc errors from xfs_blockgc_free_quota Darrick J. Wong
2021-02-01 2:06 ` [PATCH 06/12] xfs: try worst case space reservation upfront in xfs_reflink_remap_extent Darrick J. Wong
2021-02-01 12:24 ` Christoph Hellwig
2021-02-01 2:06 ` [PATCH 07/12] xfs: flush eof/cowblocks if we can't reserve quota for file blocks Darrick J. Wong
2021-02-01 12:32 ` Christoph Hellwig
2021-02-01 19:01 ` Darrick J. Wong
2021-02-02 15:38 ` Brian Foster
2021-02-02 16:53 ` Darrick J. Wong
2021-02-01 2:06 ` [PATCH 08/12] xfs: flush eof/cowblocks if we can't reserve quota for inode creation Darrick J. Wong
2021-02-01 12:35 ` Christoph Hellwig
2021-02-01 19:03 ` Darrick J. Wong
2021-02-02 15:39 ` Brian Foster
2021-02-01 2:06 ` [PATCH 09/12] xfs: flush eof/cowblocks if we can't reserve quota for chown Darrick J. Wong
2021-02-01 12:36 ` Christoph Hellwig
2021-02-01 19:12 ` Darrick J. Wong
2021-02-02 15:39 ` Brian Foster
2021-02-01 2:06 ` [PATCH 10/12] xfs: add a tracepoint for blockgc scans Darrick J. Wong
2021-02-01 2:06 ` [PATCH 11/12] xfs: refactor xfs_icache_free_{eof,cow}blocks call sites Darrick J. Wong
2021-02-01 2:06 ` [PATCH 12/12] xfs: flush speculative space allocations when we run out of space Darrick J. Wong
2021-02-02 15:39 ` Brian Foster [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-01-29 2:17 [PATCHSET v6 00/12] xfs: try harder to reclaim space when we run out Darrick J. Wong
2021-01-29 2:18 ` [PATCH 12/12] xfs: flush speculative space allocations when we run out of space Darrick J. Wong
[not found] ` <20210129161047.GH2665284@bfoster>
2021-01-29 17:34 ` Darrick J. Wong
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