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6ca444cfd6
Split out the btree level information into a separate struct and put it at the end of the cursor structure as a VLA. Files with huge data forks (and in the future, the realtime rmap btree) will require the ability to support many more levels than a per-AG btree cursor, which means that we're going to create per-btree type cursor caches to conserve memory for the more common case. Note that a subsequent patch actually introduces dynamic cursor heights. This one merely rearranges the structure to prepare for that. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
40 lines
1 KiB
C
40 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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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_inode.h"
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#include "xfs_btree.h"
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#include "scrub/scrub.h"
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#include "xfs_ag.h"
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/* Figure out which block the btree cursor was pointing to. */
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static inline xfs_fsblock_t
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xchk_btree_cur_fsbno(
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struct xfs_btree_cur *cur,
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int level)
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{
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if (level < cur->bc_nlevels && cur->bc_levels[level].bp)
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return XFS_DADDR_TO_FSB(cur->bc_mp,
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xfs_buf_daddr(cur->bc_levels[level].bp));
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if (level == cur->bc_nlevels - 1 &&
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(cur->bc_flags & XFS_BTREE_ROOT_IN_INODE))
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return XFS_INO_TO_FSB(cur->bc_mp, cur->bc_ino.ip->i_ino);
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return NULLFSBLOCK;
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}
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/*
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* We include this last to have the helpers above available for the trace
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* event implementations.
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*/
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#define CREATE_TRACE_POINTS
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#include "scrub/trace.h"
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