From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 11/19] xfs: refactor xfs_bmap_add_extent_hole_real
Date: Wed, 20 Sep 2017 14:45:09 -0700 [thread overview]
Message-ID: <20170920214509.GR7112@magnolia> (raw)
In-Reply-To: <20170918152422.24345-12-hch@lst.de>
On Mon, Sep 18, 2017 at 08:24:14AM -0700, Christoph Hellwig wrote:
> Use xfs_iext_update_extent to update entries in the in-core extent list.
> This isolates the function from the detailed layout of the extent list,
> and generally makes the code a lot more readable.
>
> 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 | 48 +++++++++++++++++++++---------------------------
> 1 file changed, 21 insertions(+), 27 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
> index 833c76084f38..4fb73c0aca05 100644
> --- a/fs/xfs/libxfs/xfs_bmap.c
> +++ b/fs/xfs/libxfs/xfs_bmap.c
> @@ -2860,6 +2860,7 @@ xfs_bmap_add_extent_hole_real(
> xfs_bmbt_irec_t right; /* right neighbor extent entry */
> int rval=0; /* return value (logging flags) */
> int state; /* state bits, accessed thru macros */
> + struct xfs_bmbt_irec old;
>
> ASSERT(*idx >= 0);
> ASSERT(*idx <= xfs_iext_count(ifp));
> @@ -2929,9 +2930,8 @@ xfs_bmap_add_extent_hole_real(
> */
> --*idx;
> trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
> - xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx),
> - left.br_blockcount + new->br_blockcount +
> - right.br_blockcount);
> + left.br_blockcount += new->br_blockcount + right.br_blockcount;
> + xfs_iext_update_extent(ifp, *idx, &left);
> trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
>
> xfs_iext_remove(ip, *idx + 1, 1, state);
> @@ -2958,10 +2958,7 @@ xfs_bmap_add_extent_hole_real(
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> error = xfs_bmbt_update(cur, left.br_startoff,
> left.br_startblock,
> - left.br_blockcount +
> - new->br_blockcount +
> - right.br_blockcount,
> - left.br_state);
> + left.br_blockcount, left.br_state);
> if (error)
> goto done;
> }
> @@ -2974,26 +2971,25 @@ xfs_bmap_add_extent_hole_real(
> * Merge the new allocation with the left neighbor.
> */
> --*idx;
> + old = left;
> trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
> - xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx),
> - left.br_blockcount + new->br_blockcount);
> + left.br_blockcount += new->br_blockcount;
> + xfs_iext_update_extent(ifp, *idx, &left);
> trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
>
> if (cur == NULL) {
> rval = xfs_ilog_fext(whichfork);
> } else {
> rval = 0;
> - error = xfs_bmbt_lookup_eq(cur, left.br_startoff,
> - left.br_startblock, left.br_blockcount,
> + error = xfs_bmbt_lookup_eq(cur, old.br_startoff,
> + old.br_startblock, old.br_blockcount,
> &i);
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> error = xfs_bmbt_update(cur, left.br_startoff,
> left.br_startblock,
> - left.br_blockcount +
> - new->br_blockcount,
> - left.br_state);
> + left.br_blockcount, left.br_state);
> if (error)
> goto done;
> }
> @@ -3005,29 +3001,27 @@ xfs_bmap_add_extent_hole_real(
> * on the right.
> * Merge the new allocation with the right neighbor.
> */
> + old = right;
> trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
> - xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx),
> - new->br_startoff, new->br_startblock,
> - new->br_blockcount + right.br_blockcount,
> - right.br_state);
> + right.br_startoff = new->br_startoff;
> + right.br_startblock = new->br_startblock;
> + right.br_blockcount += new->br_blockcount;
> + xfs_iext_update_extent(ifp, *idx, &right);
> trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
>
> if (cur == NULL) {
> rval = xfs_ilog_fext(whichfork);
> } else {
> rval = 0;
> - error = xfs_bmbt_lookup_eq(cur,
> - right.br_startoff,
> - right.br_startblock,
> - right.br_blockcount, &i);
> + error = xfs_bmbt_lookup_eq(cur, old.br_startoff,
> + old.br_startblock, old.br_blockcount,
> + &i);
> if (error)
> goto done;
> XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done);
> - error = xfs_bmbt_update(cur, new->br_startoff,
> - new->br_startblock,
> - new->br_blockcount +
> - right.br_blockcount,
> - right.br_state);
> + error = xfs_bmbt_update(cur, right.br_startoff,
> + right.br_startblock,
> + right.br_blockcount, right.br_state);
> if (error)
> goto done;
> }
> --
> 2.14.1
>
> --
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next prev parent reply other threads:[~2017-09-20 21:45 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
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 [this message]
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 11/19] xfs: refactor xfs_bmap_add_extent_hole_real Christoph Hellwig
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