From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Brian Foster <bfoster@redhat.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v2 02/11] xfs: move small allocation helper
Date: Fri, 21 Jun 2019 16:58:06 -0700 [thread overview]
Message-ID: <20190621235806.GA5387@magnolia> (raw)
In-Reply-To: <20190522180546.17063-3-bfoster@redhat.com>
On Wed, May 22, 2019 at 02:05:37PM -0400, Brian Foster wrote:
> Move the small allocation helper further up in the file to avoid the
> need for a function declaration. The remaining declarations will be
> removed by followup patches. No functional changes.
>
> Signed-off-by: Brian Foster <bfoster@redhat.com>
Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
--D
> ---
> fs/xfs/libxfs/xfs_alloc.c | 192 +++++++++++++++++++-------------------
> 1 file changed, 95 insertions(+), 97 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
> index 9751531d3000..b345fe771c54 100644
> --- a/fs/xfs/libxfs/xfs_alloc.c
> +++ b/fs/xfs/libxfs/xfs_alloc.c
> @@ -41,8 +41,6 @@ struct workqueue_struct *xfs_alloc_wq;
> STATIC int xfs_alloc_ag_vextent_exact(xfs_alloc_arg_t *);
> STATIC int xfs_alloc_ag_vextent_near(xfs_alloc_arg_t *);
> STATIC int xfs_alloc_ag_vextent_size(xfs_alloc_arg_t *);
> -STATIC int xfs_alloc_ag_vextent_small(xfs_alloc_arg_t *,
> - xfs_btree_cur_t *, xfs_agblock_t *, xfs_extlen_t *, int *);
>
> /*
> * Size of the AGFL. For CRC-enabled filesystes we steal a couple of slots in
> @@ -699,6 +697,101 @@ xfs_alloc_update_counters(
> * Allocation group level functions.
> */
>
> +/*
> + * Deal with the case where only small freespaces remain. Either return the
> + * contents of the last freespace record, or allocate space from the freelist if
> + * there is nothing in the tree.
> + */
> +STATIC int /* error */
> +xfs_alloc_ag_vextent_small(
> + struct xfs_alloc_arg *args, /* allocation argument structure */
> + struct xfs_btree_cur *ccur, /* optional by-size cursor */
> + xfs_agblock_t *fbnop, /* result block number */
> + xfs_extlen_t *flenp, /* result length */
> + int *stat) /* status: 0-freelist, 1-normal/none */
> +{
> + int error = 0;
> + xfs_agblock_t fbno = NULLAGBLOCK;
> + xfs_extlen_t flen = 0;
> + int i;
> +
> + error = xfs_btree_decrement(ccur, 0, &i);
> + if (error)
> + goto error;
> + if (i) {
> + error = xfs_alloc_get_rec(ccur, &fbno, &flen, &i);
> + if (error)
> + goto error;
> + XFS_WANT_CORRUPTED_GOTO(args->mp, i == 1, error);
> + goto out;
> + }
> +
> + if (args->minlen != 1 || args->alignment != 1 ||
> + args->resv == XFS_AG_RESV_AGFL ||
> + (be32_to_cpu(XFS_BUF_TO_AGF(args->agbp)->agf_flcount) <=
> + args->minleft))
> + goto out;
> +
> + error = xfs_alloc_get_freelist(args->tp, args->agbp, &fbno, 0);
> + if (error)
> + goto error;
> + if (fbno == NULLAGBLOCK)
> + goto out;
> +
> + xfs_extent_busy_reuse(args->mp, args->agno, fbno, 1,
> + xfs_alloc_allow_busy_reuse(args->datatype));
> +
> + if (xfs_alloc_is_userdata(args->datatype)) {
> + struct xfs_buf *bp;
> +
> + bp = xfs_btree_get_bufs(args->mp, args->tp, args->agno, fbno,
> + 0);
> + if (!bp) {
> + error = -EFSCORRUPTED;
> + goto error;
> + }
> + xfs_trans_binval(args->tp, bp);
> + }
> + args->len = 1;
> + args->agbno = fbno;
> + XFS_WANT_CORRUPTED_GOTO(args->mp,
> + fbno < be32_to_cpu(XFS_BUF_TO_AGF(args->agbp)->agf_length),
> + error);
> + args->wasfromfl = 1;
> + trace_xfs_alloc_small_freelist(args);
> +
> + /*
> + * If we're feeding an AGFL block to something that doesn't live in the
> + * free space, we need to clear out the OWN_AG rmap.
> + */
> + error = xfs_rmap_free(args->tp, args->agbp, args->agno, fbno, 1,
> + &XFS_RMAP_OINFO_AG);
> + if (error)
> + goto error;
> +
> + *stat = 0;
> + return 0;
> +
> +out:
> + /*
> + * Can't do the allocation, give up.
> + */
> + if (flen < args->minlen) {
> + args->agbno = NULLAGBLOCK;
> + trace_xfs_alloc_small_notenough(args);
> + flen = 0;
> + }
> + *fbnop = fbno;
> + *flenp = flen;
> + *stat = 1;
> + trace_xfs_alloc_small_done(args);
> + return 0;
> +
> +error:
> + trace_xfs_alloc_small_error(args);
> + return error;
> +}
> +
> /*
> * Allocate a variable extent in the allocation group agno.
> * Type and bno are used to determine where in the allocation group the
> @@ -1582,101 +1675,6 @@ xfs_alloc_ag_vextent_size(
> return 0;
> }
>
> -/*
> - * Deal with the case where only small freespaces remain. Either return the
> - * contents of the last freespace record, or allocate space from the freelist if
> - * there is nothing in the tree.
> - */
> -STATIC int /* error */
> -xfs_alloc_ag_vextent_small(
> - struct xfs_alloc_arg *args, /* allocation argument structure */
> - struct xfs_btree_cur *ccur, /* optional by-size cursor */
> - xfs_agblock_t *fbnop, /* result block number */
> - xfs_extlen_t *flenp, /* result length */
> - int *stat) /* status: 0-freelist, 1-normal/none */
> -{
> - int error = 0;
> - xfs_agblock_t fbno = NULLAGBLOCK;
> - xfs_extlen_t flen = 0;
> - int i;
> -
> - error = xfs_btree_decrement(ccur, 0, &i);
> - if (error)
> - goto error;
> - if (i) {
> - error = xfs_alloc_get_rec(ccur, &fbno, &flen, &i);
> - if (error)
> - goto error;
> - XFS_WANT_CORRUPTED_GOTO(args->mp, i == 1, error);
> - goto out;
> - }
> -
> - if (args->minlen != 1 || args->alignment != 1 ||
> - args->resv == XFS_AG_RESV_AGFL ||
> - (be32_to_cpu(XFS_BUF_TO_AGF(args->agbp)->agf_flcount) <=
> - args->minleft))
> - goto out;
> -
> - error = xfs_alloc_get_freelist(args->tp, args->agbp, &fbno, 0);
> - if (error)
> - goto error;
> - if (fbno == NULLAGBLOCK)
> - goto out;
> -
> - xfs_extent_busy_reuse(args->mp, args->agno, fbno, 1,
> - xfs_alloc_allow_busy_reuse(args->datatype));
> -
> - if (xfs_alloc_is_userdata(args->datatype)) {
> - struct xfs_buf *bp;
> -
> - bp = xfs_btree_get_bufs(args->mp, args->tp, args->agno, fbno,
> - 0);
> - if (!bp) {
> - error = -EFSCORRUPTED;
> - goto error;
> - }
> - xfs_trans_binval(args->tp, bp);
> - }
> - args->len = 1;
> - args->agbno = fbno;
> - XFS_WANT_CORRUPTED_GOTO(args->mp,
> - fbno < be32_to_cpu(XFS_BUF_TO_AGF(args->agbp)->agf_length),
> - error);
> - args->wasfromfl = 1;
> - trace_xfs_alloc_small_freelist(args);
> -
> - /*
> - * If we're feeding an AGFL block to something that doesn't live in the
> - * free space, we need to clear out the OWN_AG rmap.
> - */
> - error = xfs_rmap_free(args->tp, args->agbp, args->agno, fbno, 1,
> - &XFS_RMAP_OINFO_AG);
> - if (error)
> - goto error;
> -
> - *stat = 0;
> - return 0;
> -
> -out:
> - /*
> - * Can't do the allocation, give up.
> - */
> - if (flen < args->minlen) {
> - args->agbno = NULLAGBLOCK;
> - trace_xfs_alloc_small_notenough(args);
> - flen = 0;
> - }
> - *fbnop = fbno;
> - *flenp = flen;
> - *stat = 1;
> - trace_xfs_alloc_small_done(args);
> - return 0;
> -
> -error:
> - trace_xfs_alloc_small_error(args);
> - return error;
> -}
> -
> /*
> * Free the extent starting at agno/bno for length.
> */
> --
> 2.17.2
>
next prev parent reply other threads:[~2019-06-21 23:58 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-22 18:05 [PATCH v2 00/11] xfs: rework extent allocation Brian Foster
2019-05-22 18:05 ` [PATCH v2 01/11] xfs: clean up small allocation helper Brian Foster
2019-06-21 23:57 ` Darrick J. Wong
2019-05-22 18:05 ` [PATCH v2 02/11] xfs: move " Brian Foster
2019-06-21 23:58 ` Darrick J. Wong [this message]
2019-05-22 18:05 ` [PATCH v2 03/11] xfs: skip small alloc cntbt logic on NULL cursor Brian Foster
2019-06-21 23:58 ` Darrick J. Wong
2019-05-22 18:05 ` [PATCH v2 04/11] xfs: always update params on small allocation Brian Foster
2019-06-21 23:59 ` Darrick J. Wong
2019-05-22 18:05 ` [PATCH v2 05/11] xfs: track active state of allocation btree cursors Brian Foster
2019-05-22 18:05 ` [PATCH v2 06/11] xfs: use locality optimized cntbt lookups for near mode allocations Brian Foster
2019-05-22 18:05 ` [PATCH v2 07/11] xfs: refactor exact extent allocation mode Brian Foster
2019-05-22 18:05 ` [PATCH v2 08/11] xfs: refactor by-size " Brian Foster
2019-05-22 18:05 ` [PATCH v2 09/11] xfs: replace small allocation logic with agfl only logic Brian Foster
2019-05-22 18:05 ` [PATCH v2 10/11] xfs: refactor successful AG allocation accounting code Brian Foster
2019-05-22 18:05 ` [PATCH v2 11/11] xfs: condense high level AG allocation functions Brian Foster
2019-05-23 1:56 ` [PATCH v2 00/11] xfs: rework extent allocation Dave Chinner
2019-05-23 12:55 ` Brian Foster
2019-05-23 22:15 ` Dave Chinner
2019-05-24 12:00 ` Brian Foster
2019-05-25 22:43 ` Dave Chinner
2019-05-31 17:11 ` Brian Foster
2019-06-06 15:21 ` Brian Foster
2019-06-06 22:13 ` Dave Chinner
2019-06-07 12:57 ` Brian Foster
2019-06-06 22:05 ` Dave Chinner
2019-06-07 12:56 ` Brian Foster
2019-06-21 15:18 ` Darrick J. Wong
2019-07-01 19:12 ` Brian Foster
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