From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 06/19] xfs: move some more code into xfs_bmap_del_extent_real
Date: Wed, 20 Sep 2017 14:37:09 -0700 [thread overview]
Message-ID: <20170920213709.GM7112@magnolia> (raw)
In-Reply-To: <20170918152422.24345-7-hch@lst.de>
On Mon, Sep 18, 2017 at 08:24:09AM -0700, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
> fs/xfs/libxfs/xfs_bmap.c | 41 +++++++++++++++++------------------------
> 1 file changed, 17 insertions(+), 24 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
> index 4e6c4cc4168f..06f1bd9e144e 100644
> --- a/fs/xfs/libxfs/xfs_bmap.c
> +++ b/fs/xfs/libxfs/xfs_bmap.c
> @@ -5080,7 +5080,7 @@ xfs_bmap_del_extent_real(
> int do_fx; /* free extent at end of routine */
> xfs_bmbt_rec_host_t *ep; /* current extent entry pointer */
> int error; /* error return value */
> - int flags; /* inode logging flags */
> + int flags = 0;/* inode logging flags */
> xfs_bmbt_irec_t got; /* current extent entry */
> xfs_fileoff_t got_endoff; /* first offset past got */
> int i; /* temp state */
> @@ -5112,10 +5112,25 @@ xfs_bmap_del_extent_real(
> got_endoff = got.br_startoff + got.br_blockcount;
> ASSERT(got_endoff >= del_endoff);
> ASSERT(!isnullstartblock(got.br_startblock));
> - flags = XFS_ILOG_CORE;
> qfield = 0;
> error = 0;
>
> + /*
> + * If it's the case where the directory code is running with no block
> + * reservation, and the deleted block is in the middle of its extent,
> + * and the resulting insert of an extent would cause transformation to
> + * btree format, then reject it. The calling code will then swap blocks
> + * around instead. We have to do this now, rather than waiting for the
> + * conversion to btree format, since the transaction will be dirty then.
> + */
> + if (tp->t_blk_res == 0 &&
> + XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
> + XFS_IFORK_NEXTENTS(ip, whichfork) >=
> + XFS_IFORK_MAXEXT(ip, whichfork) &&
> + del->br_startoff > got.br_startoff && del_endoff < got_endoff)
> + return -ENOSPC;
> +
> + flags = XFS_ILOG_CORE;
> if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) {
> xfs_fsblock_t bno;
> xfs_filblks_t len;
> @@ -5601,28 +5616,6 @@ __xfs_bunmapi(
> error = xfs_bmap_del_extent_delay(ip, whichfork, &lastx,
> &got, &del);
> } else {
> - /*
> - * If it's the case where the directory code is running
> - * with no block reservation, and the deleted block is
> - * in the middle of its extent, and the resulting insert
> - * of an extent would cause transformation to btree
> - * format, then reject it. The calling code will then
> - * swap blocks around instead. We have to do this now,
> - * rather than waiting for the conversion to btree
> - * format, since the transaction will be dirty.
> - */
> - if (tp->t_blk_res == 0 &&
> - XFS_IFORK_FORMAT(ip, whichfork) ==
> - XFS_DINODE_FMT_EXTENTS &&
> - XFS_IFORK_NEXTENTS(ip, whichfork) >=
> - XFS_IFORK_MAXEXT(ip, whichfork) &&
> - del.br_startoff > got.br_startoff &&
> - del.br_startoff + del.br_blockcount <
> - got.br_startoff + got.br_blockcount) {
> - error = -ENOSPC;
> - goto error0;
> - }
> -
> error = xfs_bmap_del_extent_real(ip, tp, &lastx, dfops,
> cur, &del, &tmp_logflags, whichfork,
> flags);
> --
> 2.14.1
>
> --
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next prev parent reply other threads:[~2017-09-20 21:37 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-18 15:24 refactor extent manipulation V3 Christoph Hellwig
2017-09-18 15:24 ` [PATCH 01/19] xfs: fix incorrect extent state in xfs_bmap_add_extent_unwritten_real Christoph Hellwig
2017-09-20 21:20 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 02/19] xfs: use xfs_iext_get_extent instead of open coding it Christoph Hellwig
2017-09-20 21:20 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 03/19] xfs: don't set XFS_BTCUR_BPRV_WASDEL in xfs_bunmapi Christoph Hellwig
2017-09-20 21:29 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 04/19] xfs: rename bno to end in __xfs_bunmapi Christoph Hellwig
2017-09-20 21:30 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 05/19] xfs: use xfs_bmap_del_extent_delay for the data fork as well Christoph Hellwig
2017-09-20 21:46 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 06/19] xfs: move some more code into xfs_bmap_del_extent_real Christoph Hellwig
2017-09-20 21:37 ` Darrick J. Wong [this message]
2017-09-18 15:24 ` [PATCH 07/19] xfs: use correct state defines in xfs_bmap_del_extent_{cow,delay} Christoph Hellwig
2017-09-20 21:38 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 08/19] xfs: use the state defines in xfs_bmap_del_extent_real Christoph Hellwig
2017-09-20 21:41 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 09/19] xfs: refactor xfs_del_extent_real Christoph Hellwig
2017-09-20 21:42 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 10/19] xfs: refactor xfs_bmap_add_extent_hole_delay Christoph Hellwig
2017-09-20 21:44 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 11/19] xfs: refactor xfs_bmap_add_extent_hole_real Christoph Hellwig
2017-09-20 21:45 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 12/19] xfs: refactor xfs_bmap_add_extent_delay_real Christoph Hellwig
2017-09-19 16:35 ` Brian Foster
2017-09-21 13:27 ` Christoph Hellwig
2017-09-21 13:52 ` Brian Foster
2017-09-20 22:03 ` Darrick J. Wong
2017-09-21 13:28 ` Christoph Hellwig
2017-09-21 16:01 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 13/19] xfs: refactor delalloc accounting in xfs_bmap_add_extent_delay_real Christoph Hellwig
2017-09-19 16:35 ` Brian Foster
2017-09-20 22:12 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 14/19] xfs: refactor xfs_bmap_add_extent_unwritten_real Christoph Hellwig
2017-09-20 22:22 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 15/19] xfs: pass a struct xfs_bmbt_irec to xfs_bmbt_update Christoph Hellwig
2017-09-20 22:24 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 16/19] xfs: pass a struct xfs_bmbt_irec to xfs_bmbt_lookup_eq Christoph Hellwig
2017-09-20 22:27 ` Darrick J. Wong
2017-09-21 13:23 ` Christoph Hellwig
2017-09-21 15:34 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 17/19] xfs: replace xfs_bmbt_lookup_ge with xfs_bmbt_lookup_first Christoph Hellwig
2017-09-20 22:27 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 18/19] xfs: remove all xfs_bmbt_set_* helpers except for xfs_bmbt_set_all Christoph Hellwig
2017-09-20 22:27 ` Darrick J. Wong
2017-09-18 15:24 ` [PATCH 19/19] xfs: remove xfs_bmbt_get_state Christoph Hellwig
2017-09-20 22:28 ` Darrick J. Wong
-- strict thread matches above, loose matches on Subject: below --
2017-09-22 13:59 refactor extent manipulation V4 Christoph Hellwig
2017-09-22 13:59 ` [PATCH 06/19] xfs: move some more code into xfs_bmap_del_extent_real Christoph Hellwig
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