2016-08-03 02:09:48 +00:00
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/*
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* Copyright (C) 2016 Oracle. All Rights Reserved.
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*
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_defer.h"
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#include "xfs_trans.h"
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#include "xfs_trans_priv.h"
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#include "xfs_rmap_item.h"
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#include "xfs_alloc.h"
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#include "xfs_rmap.h"
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/* Set the map extent flags for this reverse mapping. */
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static void
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xfs_trans_set_rmap_flags(
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struct xfs_map_extent *rmap,
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enum xfs_rmap_intent_type type,
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int whichfork,
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xfs_exntst_t state)
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{
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rmap->me_flags = 0;
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if (state == XFS_EXT_UNWRITTEN)
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rmap->me_flags |= XFS_RMAP_EXTENT_UNWRITTEN;
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if (whichfork == XFS_ATTR_FORK)
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rmap->me_flags |= XFS_RMAP_EXTENT_ATTR_FORK;
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switch (type) {
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case XFS_RMAP_MAP:
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rmap->me_flags |= XFS_RMAP_EXTENT_MAP;
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break;
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2016-10-03 16:11:47 +00:00
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case XFS_RMAP_MAP_SHARED:
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rmap->me_flags |= XFS_RMAP_EXTENT_MAP_SHARED;
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break;
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2016-08-03 02:09:48 +00:00
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case XFS_RMAP_UNMAP:
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rmap->me_flags |= XFS_RMAP_EXTENT_UNMAP;
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break;
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2016-10-03 16:11:47 +00:00
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case XFS_RMAP_UNMAP_SHARED:
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rmap->me_flags |= XFS_RMAP_EXTENT_UNMAP_SHARED;
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break;
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2016-08-03 02:09:48 +00:00
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case XFS_RMAP_CONVERT:
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rmap->me_flags |= XFS_RMAP_EXTENT_CONVERT;
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break;
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2016-10-03 16:11:47 +00:00
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case XFS_RMAP_CONVERT_SHARED:
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rmap->me_flags |= XFS_RMAP_EXTENT_CONVERT_SHARED;
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break;
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2016-08-03 02:09:48 +00:00
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case XFS_RMAP_ALLOC:
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rmap->me_flags |= XFS_RMAP_EXTENT_ALLOC;
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break;
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case XFS_RMAP_FREE:
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rmap->me_flags |= XFS_RMAP_EXTENT_FREE;
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break;
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default:
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ASSERT(0);
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}
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}
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struct xfs_rud_log_item *
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xfs_trans_get_rud(
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struct xfs_trans *tp,
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2016-08-03 02:28:43 +00:00
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struct xfs_rui_log_item *ruip)
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2016-08-03 02:09:48 +00:00
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{
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struct xfs_rud_log_item *rudp;
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2016-08-03 02:28:43 +00:00
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rudp = xfs_rud_init(tp->t_mountp, ruip);
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2016-08-03 02:09:48 +00:00
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xfs_trans_add_item(tp, &rudp->rud_item);
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return rudp;
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}
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/*
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* Finish an rmap update and log it to the RUD. Note that the transaction is
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* marked dirty regardless of whether the rmap update succeeds or fails to
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* support the RUI/RUD lifecycle rules.
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*/
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int
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xfs_trans_log_finish_rmap_update(
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struct xfs_trans *tp,
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struct xfs_rud_log_item *rudp,
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enum xfs_rmap_intent_type type,
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__uint64_t owner,
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int whichfork,
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xfs_fileoff_t startoff,
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xfs_fsblock_t startblock,
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xfs_filblks_t blockcount,
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xfs: propagate bmap updates to rmapbt
When we map, unmap, or convert an extent in a file's data or attr
fork, schedule a respective update in the rmapbt. Previous versions
of this patch required a 1:1 correspondence between bmap and rmap,
but this is no longer true as we now have ability to make interval
queries against the rmapbt.
We use the deferred operations code to handle redo operations
atomically and deadlock free. This plumbs in all five rmap actions
(map, unmap, convert extent, alloc, free); we'll use the first three
now for file data, and reflink will want the last two. We also add
an error injection site to test log recovery.
Finally, we need to fix the bmap shift extent code to adjust the
rmaps correctly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2016-08-03 02:16:05 +00:00
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xfs_exntst_t state,
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struct xfs_btree_cur **pcur)
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2016-08-03 02:09:48 +00:00
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{
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int error;
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xfs: propagate bmap updates to rmapbt
When we map, unmap, or convert an extent in a file's data or attr
fork, schedule a respective update in the rmapbt. Previous versions
of this patch required a 1:1 correspondence between bmap and rmap,
but this is no longer true as we now have ability to make interval
queries against the rmapbt.
We use the deferred operations code to handle redo operations
atomically and deadlock free. This plumbs in all five rmap actions
(map, unmap, convert extent, alloc, free); we'll use the first three
now for file data, and reflink will want the last two. We also add
an error injection site to test log recovery.
Finally, we need to fix the bmap shift extent code to adjust the
rmaps correctly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2016-08-03 02:16:05 +00:00
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error = xfs_rmap_finish_one(tp, type, owner, whichfork, startoff,
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startblock, blockcount, state, pcur);
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2016-08-03 02:09:48 +00:00
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/*
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* Mark the transaction dirty, even on error. This ensures the
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* transaction is aborted, which:
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*
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* 1.) releases the RUI and frees the RUD
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* 2.) shuts down the filesystem
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*/
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tp->t_flags |= XFS_TRANS_DIRTY;
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rudp->rud_item.li_desc->lid_flags |= XFS_LID_DIRTY;
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return error;
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}
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2016-08-03 02:11:01 +00:00
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/* Sort rmap intents by AG. */
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static int
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xfs_rmap_update_diff_items(
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void *priv,
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struct list_head *a,
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struct list_head *b)
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{
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struct xfs_mount *mp = priv;
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struct xfs_rmap_intent *ra;
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struct xfs_rmap_intent *rb;
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ra = container_of(a, struct xfs_rmap_intent, ri_list);
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rb = container_of(b, struct xfs_rmap_intent, ri_list);
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return XFS_FSB_TO_AGNO(mp, ra->ri_bmap.br_startblock) -
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XFS_FSB_TO_AGNO(mp, rb->ri_bmap.br_startblock);
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}
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/* Get an RUI. */
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STATIC void *
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xfs_rmap_update_create_intent(
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struct xfs_trans *tp,
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unsigned int count)
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{
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2016-08-03 02:30:31 +00:00
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struct xfs_rui_log_item *ruip;
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ASSERT(tp != NULL);
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ASSERT(count > 0);
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ruip = xfs_rui_init(tp->t_mountp, count);
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ASSERT(ruip != NULL);
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/*
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* Get a log_item_desc to point at the new item.
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*/
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xfs_trans_add_item(tp, &ruip->rui_item);
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return ruip;
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2016-08-03 02:11:01 +00:00
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}
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/* Log rmap updates in the intent item. */
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STATIC void
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xfs_rmap_update_log_item(
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struct xfs_trans *tp,
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void *intent,
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struct list_head *item)
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{
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2016-08-03 02:30:31 +00:00
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struct xfs_rui_log_item *ruip = intent;
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2016-08-03 02:11:01 +00:00
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struct xfs_rmap_intent *rmap;
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2016-08-03 02:30:31 +00:00
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uint next_extent;
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struct xfs_map_extent *map;
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2016-08-03 02:11:01 +00:00
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rmap = container_of(item, struct xfs_rmap_intent, ri_list);
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2016-08-03 02:30:31 +00:00
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tp->t_flags |= XFS_TRANS_DIRTY;
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ruip->rui_item.li_desc->lid_flags |= XFS_LID_DIRTY;
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/*
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* atomic_inc_return gives us the value after the increment;
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* we want to use it as an array index so we need to subtract 1 from
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* it.
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*/
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next_extent = atomic_inc_return(&ruip->rui_next_extent) - 1;
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ASSERT(next_extent < ruip->rui_format.rui_nextents);
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map = &ruip->rui_format.rui_extents[next_extent];
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map->me_owner = rmap->ri_owner;
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map->me_startblock = rmap->ri_bmap.br_startblock;
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map->me_startoff = rmap->ri_bmap.br_startoff;
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map->me_len = rmap->ri_bmap.br_blockcount;
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xfs_trans_set_rmap_flags(map, rmap->ri_type, rmap->ri_whichfork,
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2016-08-03 02:11:01 +00:00
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rmap->ri_bmap.br_state);
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}
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/* Get an RUD so we can process all the deferred rmap updates. */
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STATIC void *
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xfs_rmap_update_create_done(
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struct xfs_trans *tp,
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void *intent,
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unsigned int count)
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{
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2016-08-03 02:28:43 +00:00
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return xfs_trans_get_rud(tp, intent);
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2016-08-03 02:11:01 +00:00
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}
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/* Process a deferred rmap update. */
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STATIC int
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xfs_rmap_update_finish_item(
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struct xfs_trans *tp,
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struct xfs_defer_ops *dop,
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struct list_head *item,
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void *done_item,
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void **state)
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{
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struct xfs_rmap_intent *rmap;
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int error;
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rmap = container_of(item, struct xfs_rmap_intent, ri_list);
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error = xfs_trans_log_finish_rmap_update(tp, done_item,
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rmap->ri_type,
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rmap->ri_owner, rmap->ri_whichfork,
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rmap->ri_bmap.br_startoff,
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rmap->ri_bmap.br_startblock,
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rmap->ri_bmap.br_blockcount,
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xfs: propagate bmap updates to rmapbt
When we map, unmap, or convert an extent in a file's data or attr
fork, schedule a respective update in the rmapbt. Previous versions
of this patch required a 1:1 correspondence between bmap and rmap,
but this is no longer true as we now have ability to make interval
queries against the rmapbt.
We use the deferred operations code to handle redo operations
atomically and deadlock free. This plumbs in all five rmap actions
(map, unmap, convert extent, alloc, free); we'll use the first three
now for file data, and reflink will want the last two. We also add
an error injection site to test log recovery.
Finally, we need to fix the bmap shift extent code to adjust the
rmaps correctly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2016-08-03 02:16:05 +00:00
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rmap->ri_bmap.br_state,
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(struct xfs_btree_cur **)state);
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2016-08-03 02:11:01 +00:00
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kmem_free(rmap);
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return error;
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}
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/* Clean up after processing deferred rmaps. */
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STATIC void
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xfs_rmap_update_finish_cleanup(
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struct xfs_trans *tp,
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void *state,
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int error)
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{
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xfs: propagate bmap updates to rmapbt
When we map, unmap, or convert an extent in a file's data or attr
fork, schedule a respective update in the rmapbt. Previous versions
of this patch required a 1:1 correspondence between bmap and rmap,
but this is no longer true as we now have ability to make interval
queries against the rmapbt.
We use the deferred operations code to handle redo operations
atomically and deadlock free. This plumbs in all five rmap actions
(map, unmap, convert extent, alloc, free); we'll use the first three
now for file data, and reflink will want the last two. We also add
an error injection site to test log recovery.
Finally, we need to fix the bmap shift extent code to adjust the
rmaps correctly.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2016-08-03 02:16:05 +00:00
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struct xfs_btree_cur *rcur = state;
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xfs_rmap_finish_one_cleanup(tp, rcur, error);
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2016-08-03 02:11:01 +00:00
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}
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/* Abort all pending RUIs. */
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STATIC void
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xfs_rmap_update_abort_intent(
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void *intent)
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{
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xfs_rui_release(intent);
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}
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/* Cancel a deferred rmap update. */
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STATIC void
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xfs_rmap_update_cancel_item(
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struct list_head *item)
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{
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struct xfs_rmap_intent *rmap;
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rmap = container_of(item, struct xfs_rmap_intent, ri_list);
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kmem_free(rmap);
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}
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static const struct xfs_defer_op_type xfs_rmap_update_defer_type = {
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.type = XFS_DEFER_OPS_TYPE_RMAP,
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.max_items = XFS_RUI_MAX_FAST_EXTENTS,
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.diff_items = xfs_rmap_update_diff_items,
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.create_intent = xfs_rmap_update_create_intent,
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.abort_intent = xfs_rmap_update_abort_intent,
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.log_item = xfs_rmap_update_log_item,
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.create_done = xfs_rmap_update_create_done,
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.finish_item = xfs_rmap_update_finish_item,
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.finish_cleanup = xfs_rmap_update_finish_cleanup,
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.cancel_item = xfs_rmap_update_cancel_item,
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};
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/* Register the deferred op type. */
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void
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xfs_rmap_update_init_defer_op(void)
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{
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xfs_defer_init_op_type(&xfs_rmap_update_defer_type);
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}
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