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xfs: perags need atomic operational state
We currently don't have any flags or operational state in the xfs_perag except for the pagf_init and pagi_init flags. And the agflreset flag. Oh, there's also the pagf_metadata and pagi_inodeok flags, too. For controlling per-ag operations, we are going to need some atomic state flags. Hence add an opstate field similar to what we already have in the mount and log, and convert all these state flags across to atomic bit operations. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
parent
20a5eab49d
commit
7ac2ff8bb3
13 changed files with 101 additions and 65 deletions
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@ -35,13 +35,9 @@ struct xfs_perag {
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atomic_t pag_ref; /* passive reference count */
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atomic_t pag_active_ref; /* active reference count */
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wait_queue_head_t pag_active_wq;/* woken active_ref falls to zero */
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char pagf_init; /* this agf's entry is initialized */
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char pagi_init; /* this agi's entry is initialized */
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char pagf_metadata; /* the agf is preferred to be metadata */
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char pagi_inodeok; /* The agi is ok for inodes */
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unsigned long pag_opstate;
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uint8_t pagf_levels[XFS_BTNUM_AGF];
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/* # of levels in bno & cnt btree */
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bool pagf_agflreset; /* agfl requires reset before use */
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uint32_t pagf_flcount; /* count of blocks in freelist */
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xfs_extlen_t pagf_freeblks; /* total free blocks */
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xfs_extlen_t pagf_longest; /* longest free space */
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@ -108,6 +104,27 @@ struct xfs_perag {
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#endif /* __KERNEL__ */
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};
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/*
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* Per-AG operational state. These are atomic flag bits.
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*/
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#define XFS_AGSTATE_AGF_INIT 0
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#define XFS_AGSTATE_AGI_INIT 1
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#define XFS_AGSTATE_PREFERS_METADATA 2
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#define XFS_AGSTATE_ALLOWS_INODES 3
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#define XFS_AGSTATE_AGFL_NEEDS_RESET 4
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#define __XFS_AG_OPSTATE(name, NAME) \
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static inline bool xfs_perag_ ## name (struct xfs_perag *pag) \
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{ \
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return test_bit(XFS_AGSTATE_ ## NAME, &pag->pag_opstate); \
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}
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__XFS_AG_OPSTATE(initialised_agf, AGF_INIT)
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__XFS_AG_OPSTATE(initialised_agi, AGI_INIT)
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__XFS_AG_OPSTATE(prefers_metadata, PREFERS_METADATA)
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__XFS_AG_OPSTATE(allows_inodes, ALLOWS_INODES)
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__XFS_AG_OPSTATE(agfl_needs_reset, AGFL_NEEDS_RESET)
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int xfs_initialize_perag(struct xfs_mount *mp, xfs_agnumber_t agcount,
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xfs_rfsblock_t dcount, xfs_agnumber_t *maxagi);
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int xfs_initialize_perag_data(struct xfs_mount *mp, xfs_agnumber_t agno);
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@ -2435,7 +2435,7 @@ xfs_agfl_reset(
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struct xfs_mount *mp = tp->t_mountp;
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struct xfs_agf *agf = agbp->b_addr;
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ASSERT(pag->pagf_agflreset);
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ASSERT(xfs_perag_agfl_needs_reset(pag));
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trace_xfs_agfl_reset(mp, agf, 0, _RET_IP_);
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xfs_warn(mp,
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@ -2450,7 +2450,7 @@ xfs_agfl_reset(
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XFS_AGF_FLCOUNT);
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pag->pagf_flcount = 0;
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pag->pagf_agflreset = false;
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clear_bit(XFS_AGSTATE_AGFL_NEEDS_RESET, &pag->pag_opstate);
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}
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/*
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@ -2605,7 +2605,7 @@ xfs_alloc_fix_freelist(
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/* deferred ops (AGFL block frees) require permanent transactions */
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ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
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if (!pag->pagf_init) {
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if (!xfs_perag_initialised_agf(pag)) {
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error = xfs_alloc_read_agf(pag, tp, flags, &agbp);
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if (error) {
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/* Couldn't lock the AGF so skip this AG. */
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@ -2620,7 +2620,8 @@ xfs_alloc_fix_freelist(
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* somewhere else if we are not being asked to try harder at this
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* point
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*/
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if (pag->pagf_metadata && (args->datatype & XFS_ALLOC_USERDATA) &&
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if (xfs_perag_prefers_metadata(pag) &&
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(args->datatype & XFS_ALLOC_USERDATA) &&
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(flags & XFS_ALLOC_FLAG_TRYLOCK)) {
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ASSERT(!(flags & XFS_ALLOC_FLAG_FREEING));
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goto out_agbp_relse;
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@ -2646,7 +2647,7 @@ xfs_alloc_fix_freelist(
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}
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/* reset a padding mismatched agfl before final free space check */
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if (pag->pagf_agflreset)
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if (xfs_perag_agfl_needs_reset(pag))
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xfs_agfl_reset(tp, agbp, pag);
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/* If there isn't enough total space or single-extent, reject it. */
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@ -2803,7 +2804,7 @@ xfs_alloc_get_freelist(
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if (be32_to_cpu(agf->agf_flfirst) == xfs_agfl_size(mp))
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agf->agf_flfirst = 0;
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ASSERT(!pag->pagf_agflreset);
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ASSERT(!xfs_perag_agfl_needs_reset(pag));
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be32_add_cpu(&agf->agf_flcount, -1);
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pag->pagf_flcount--;
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@ -2892,7 +2893,7 @@ xfs_alloc_put_freelist(
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if (be32_to_cpu(agf->agf_fllast) == xfs_agfl_size(mp))
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agf->agf_fllast = 0;
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ASSERT(!pag->pagf_agflreset);
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ASSERT(!xfs_perag_agfl_needs_reset(pag));
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be32_add_cpu(&agf->agf_flcount, 1);
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pag->pagf_flcount++;
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@ -3099,7 +3100,7 @@ xfs_alloc_read_agf(
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return error;
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agf = agfbp->b_addr;
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if (!pag->pagf_init) {
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if (!xfs_perag_initialised_agf(pag)) {
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pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks);
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pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks);
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pag->pagf_flcount = be32_to_cpu(agf->agf_flcount);
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@ -3111,8 +3112,8 @@ xfs_alloc_read_agf(
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pag->pagf_levels[XFS_BTNUM_RMAPi] =
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be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAPi]);
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pag->pagf_refcount_level = be32_to_cpu(agf->agf_refcount_level);
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pag->pagf_init = 1;
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pag->pagf_agflreset = xfs_agfl_needs_reset(pag->pag_mount, agf);
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if (xfs_agfl_needs_reset(pag->pag_mount, agf))
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set_bit(XFS_AGSTATE_AGFL_NEEDS_RESET, &pag->pag_opstate);
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/*
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* Update the in-core allocbt counter. Filter out the rmapbt
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@ -3127,6 +3128,8 @@ xfs_alloc_read_agf(
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if (allocbt_blks > 0)
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atomic64_add(allocbt_blks,
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&pag->pag_mount->m_allocbt_blks);
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set_bit(XFS_AGSTATE_AGF_INIT, &pag->pag_opstate);
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}
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#ifdef DEBUG
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else if (!xfs_is_shutdown(pag->pag_mount)) {
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@ -315,7 +315,7 @@ xfs_allocbt_verify(
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level = be16_to_cpu(block->bb_level);
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if (bp->b_ops->magic[0] == cpu_to_be32(XFS_ABTC_MAGIC))
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btnum = XFS_BTNUM_CNTi;
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if (pag && pag->pagf_init) {
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if (pag && xfs_perag_initialised_agf(pag)) {
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if (level >= pag->pagf_levels[btnum])
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return __this_address;
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} else if (level >= mp->m_alloc_maxlevels)
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@ -3147,7 +3147,7 @@ xfs_bmap_longest_free_extent(
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int error = 0;
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pag = xfs_perag_get(mp, ag);
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if (!pag->pagf_init) {
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if (!xfs_perag_initialised_agf(pag)) {
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error = xfs_alloc_read_agf(pag, tp, XFS_ALLOC_FLAG_TRYLOCK,
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NULL);
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if (error) {
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@ -998,8 +998,8 @@ xfs_dialloc_ag_inobt(
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int i, j;
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int searchdistance = 10;
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ASSERT(pag->pagi_init);
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ASSERT(pag->pagi_inodeok);
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ASSERT(xfs_perag_initialised_agi(pag));
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ASSERT(xfs_perag_allows_inodes(pag));
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ASSERT(pag->pagi_freecount > 0);
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restart_pagno:
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@ -1592,10 +1592,10 @@ xfs_dialloc_good_ag(
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if (!pag)
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return false;
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if (!pag->pagi_inodeok)
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if (!xfs_perag_allows_inodes(pag))
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return false;
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if (!pag->pagi_init) {
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if (!xfs_perag_initialised_agi(pag)) {
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error = xfs_ialloc_read_agi(pag, tp, NULL);
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if (error)
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return false;
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@ -1606,7 +1606,7 @@ xfs_dialloc_good_ag(
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if (!ok_alloc)
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return false;
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if (!pag->pagf_init) {
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if (!xfs_perag_initialised_agf(pag)) {
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error = xfs_alloc_read_agf(pag, tp, flags, NULL);
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if (error)
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return false;
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@ -2603,10 +2603,10 @@ xfs_ialloc_read_agi(
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return error;
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agi = agibp->b_addr;
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if (!pag->pagi_init) {
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if (!xfs_perag_initialised_agi(pag)) {
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pag->pagi_freecount = be32_to_cpu(agi->agi_freecount);
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pag->pagi_count = be32_to_cpu(agi->agi_count);
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pag->pagi_init = 1;
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set_bit(XFS_AGSTATE_AGI_INIT, &pag->pag_opstate);
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}
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/*
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@ -291,8 +291,8 @@ xfs_inobt_verify(
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* Similarly, during log recovery we will have a perag structure
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* attached, but the agi information will not yet have been initialised
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* from the on disk AGI. We don't currently use any of this information,
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* but beware of the landmine (i.e. need to check pag->pagi_init) if we
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* ever do.
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* but beware of the landmine (i.e. need to check
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* xfs_perag_initialised_agi(pag)) if we ever do.
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*/
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if (xfs_has_crc(mp)) {
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fa = xfs_btree_sblock_v5hdr_verify(bp);
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@ -227,7 +227,7 @@ xfs_refcountbt_verify(
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return fa;
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level = be16_to_cpu(block->bb_level);
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if (pag && pag->pagf_init) {
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if (pag && xfs_perag_initialised_agf(pag)) {
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if (level >= pag->pagf_refcount_level)
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return __this_address;
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} else if (level >= mp->m_refc_maxlevels)
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@ -313,7 +313,7 @@ xfs_rmapbt_verify(
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return fa;
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level = be16_to_cpu(block->bb_level);
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if (pag && pag->pagf_init) {
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if (pag && xfs_perag_initialised_agf(pag)) {
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if (level >= pag->pagf_levels[XFS_BTNUM_RMAPi])
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return __this_address;
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} else if (level >= mp->m_rmap_maxlevels)
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@ -191,14 +191,15 @@ xrep_agf_init_header(
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struct xfs_agf *old_agf)
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{
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struct xfs_mount *mp = sc->mp;
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struct xfs_perag *pag = sc->sa.pag;
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struct xfs_agf *agf = agf_bp->b_addr;
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memcpy(old_agf, agf, sizeof(*old_agf));
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memset(agf, 0, BBTOB(agf_bp->b_length));
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agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
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agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
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agf->agf_seqno = cpu_to_be32(sc->sa.pag->pag_agno);
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agf->agf_length = cpu_to_be32(sc->sa.pag->block_count);
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agf->agf_seqno = cpu_to_be32(pag->pag_agno);
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agf->agf_length = cpu_to_be32(pag->block_count);
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agf->agf_flfirst = old_agf->agf_flfirst;
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agf->agf_fllast = old_agf->agf_fllast;
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agf->agf_flcount = old_agf->agf_flcount;
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@ -206,8 +207,8 @@ xrep_agf_init_header(
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uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid);
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/* Mark the incore AGF data stale until we're done fixing things. */
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ASSERT(sc->sa.pag->pagf_init);
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sc->sa.pag->pagf_init = 0;
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ASSERT(xfs_perag_initialised_agf(pag));
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clear_bit(XFS_AGSTATE_AGF_INIT, &pag->pag_opstate);
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}
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/* Set btree root information in an AGF. */
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@ -333,7 +334,7 @@ xrep_agf_commit_new(
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pag->pagf_levels[XFS_BTNUM_RMAPi] =
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be32_to_cpu(agf->agf_levels[XFS_BTNUM_RMAPi]);
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pag->pagf_refcount_level = be32_to_cpu(agf->agf_refcount_level);
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pag->pagf_init = 1;
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set_bit(XFS_AGSTATE_AGF_INIT, &pag->pag_opstate);
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return 0;
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}
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@ -434,7 +435,7 @@ xrep_agf(
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out_revert:
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/* Mark the incore AGF state stale and revert the AGF. */
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sc->sa.pag->pagf_init = 0;
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clear_bit(XFS_AGSTATE_AGF_INIT, &sc->sa.pag->pag_opstate);
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memcpy(agf, &old_agf, sizeof(old_agf));
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return error;
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}
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@ -618,7 +619,7 @@ xrep_agfl_update_agf(
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xfs_force_summary_recalc(sc->mp);
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/* Update the AGF counters. */
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if (sc->sa.pag->pagf_init)
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if (xfs_perag_initialised_agf(sc->sa.pag))
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sc->sa.pag->pagf_flcount = flcount;
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agf->agf_flfirst = cpu_to_be32(0);
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agf->agf_flcount = cpu_to_be32(flcount);
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@ -822,14 +823,15 @@ xrep_agi_init_header(
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struct xfs_agi *old_agi)
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{
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struct xfs_agi *agi = agi_bp->b_addr;
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struct xfs_perag *pag = sc->sa.pag;
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struct xfs_mount *mp = sc->mp;
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memcpy(old_agi, agi, sizeof(*old_agi));
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memset(agi, 0, BBTOB(agi_bp->b_length));
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agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
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agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
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agi->agi_seqno = cpu_to_be32(sc->sa.pag->pag_agno);
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agi->agi_length = cpu_to_be32(sc->sa.pag->block_count);
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agi->agi_seqno = cpu_to_be32(pag->pag_agno);
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agi->agi_length = cpu_to_be32(pag->block_count);
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agi->agi_newino = cpu_to_be32(NULLAGINO);
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agi->agi_dirino = cpu_to_be32(NULLAGINO);
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if (xfs_has_crc(mp))
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@ -840,8 +842,8 @@ xrep_agi_init_header(
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sizeof(agi->agi_unlinked));
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/* Mark the incore AGF data stale until we're done fixing things. */
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ASSERT(sc->sa.pag->pagi_init);
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sc->sa.pag->pagi_init = 0;
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ASSERT(xfs_perag_initialised_agi(pag));
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clear_bit(XFS_AGSTATE_AGI_INIT, &pag->pag_opstate);
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}
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/* Set btree root information in an AGI. */
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@ -928,7 +930,7 @@ xrep_agi_commit_new(
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pag = sc->sa.pag;
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pag->pagi_count = be32_to_cpu(agi->agi_count);
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pag->pagi_freecount = be32_to_cpu(agi->agi_freecount);
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pag->pagi_init = 1;
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set_bit(XFS_AGSTATE_AGI_INIT, &pag->pag_opstate);
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return 0;
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}
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@ -993,7 +995,7 @@ xrep_agi(
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out_revert:
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/* Mark the incore AGI state stale and revert the AGI. */
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sc->sa.pag->pagi_init = 0;
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clear_bit(XFS_AGSTATE_AGI_INIT, &sc->sa.pag->pag_opstate);
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memcpy(agi, &old_agi, sizeof(old_agi));
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return error;
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}
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@ -86,7 +86,8 @@ xchk_fscount_warmup(
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for_each_perag(mp, agno, pag) {
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if (xchk_should_terminate(sc, &error))
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break;
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if (pag->pagi_init && pag->pagf_init)
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if (xfs_perag_initialised_agi(pag) &&
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xfs_perag_initialised_agf(pag))
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continue;
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/* Lock both AG headers. */
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@ -101,7 +102,8 @@ xchk_fscount_warmup(
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* These are supposed to be initialized by the header read
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* function.
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*/
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if (!pag->pagi_init || !pag->pagf_init) {
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if (!xfs_perag_initialised_agi(pag) ||
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!xfs_perag_initialised_agf(pag)) {
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error = -EFSCORRUPTED;
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break;
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}
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@ -220,7 +222,8 @@ xchk_fscount_aggregate_agcounts(
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break;
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/* This somehow got unset since the warmup? */
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if (!pag->pagi_init || !pag->pagf_init) {
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if (!xfs_perag_initialised_agi(pag) ||
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!xfs_perag_initialised_agf(pag)) {
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error = -EFSCORRUPTED;
|
||||
break;
|
||||
}
|
||||
|
|
|
@ -206,7 +206,7 @@ xrep_calc_ag_resblks(
|
|||
return 0;
|
||||
|
||||
pag = xfs_perag_get(mp, sm->sm_agno);
|
||||
if (pag->pagi_init) {
|
||||
if (xfs_perag_initialised_agi(pag)) {
|
||||
/* Use in-core icount if possible. */
|
||||
icount = pag->pagi_count;
|
||||
} else {
|
||||
|
|
|
@ -125,7 +125,7 @@ xfs_filestream_pick_ag(
|
|||
|
||||
pag = xfs_perag_get(mp, ag);
|
||||
|
||||
if (!pag->pagf_init) {
|
||||
if (!xfs_perag_initialised_agf(pag)) {
|
||||
err = xfs_alloc_read_agf(pag, NULL, trylock, NULL);
|
||||
if (err) {
|
||||
if (err != -EAGAIN) {
|
||||
|
@ -159,7 +159,8 @@ xfs_filestream_pick_ag(
|
|||
xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE));
|
||||
if (((minlen && longest >= minlen) ||
|
||||
(!minlen && pag->pagf_freeblks >= minfree)) &&
|
||||
(!pag->pagf_metadata || !(flags & XFS_PICK_USERDATA) ||
|
||||
(!xfs_perag_prefers_metadata(pag) ||
|
||||
!(flags & XFS_PICK_USERDATA) ||
|
||||
(flags & XFS_PICK_LOWSPACE))) {
|
||||
|
||||
/* Break out, retaining the reference on the AG. */
|
||||
|
|
|
@ -247,6 +247,32 @@ xfs_fs_show_options(
|
|||
return 0;
|
||||
}
|
||||
|
||||
static bool
|
||||
xfs_set_inode_alloc_perag(
|
||||
struct xfs_perag *pag,
|
||||
xfs_ino_t ino,
|
||||
xfs_agnumber_t max_metadata)
|
||||
{
|
||||
if (!xfs_is_inode32(pag->pag_mount)) {
|
||||
set_bit(XFS_AGSTATE_ALLOWS_INODES, &pag->pag_opstate);
|
||||
clear_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (ino > XFS_MAXINUMBER_32) {
|
||||
clear_bit(XFS_AGSTATE_ALLOWS_INODES, &pag->pag_opstate);
|
||||
clear_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate);
|
||||
return false;
|
||||
}
|
||||
|
||||
set_bit(XFS_AGSTATE_ALLOWS_INODES, &pag->pag_opstate);
|
||||
if (pag->pag_agno < max_metadata)
|
||||
set_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate);
|
||||
else
|
||||
clear_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate);
|
||||
return true;
|
||||
}
|
||||
|
||||
/*
|
||||
* Set parameters for inode allocation heuristics, taking into account
|
||||
* filesystem size and inode32/inode64 mount options; i.e. specifically
|
||||
|
@ -310,24 +336,8 @@ xfs_set_inode_alloc(
|
|||
ino = XFS_AGINO_TO_INO(mp, index, agino);
|
||||
|
||||
pag = xfs_perag_get(mp, index);
|
||||
|
||||
if (xfs_is_inode32(mp)) {
|
||||
if (ino > XFS_MAXINUMBER_32) {
|
||||
pag->pagi_inodeok = 0;
|
||||
pag->pagf_metadata = 0;
|
||||
} else {
|
||||
pag->pagi_inodeok = 1;
|
||||
maxagi++;
|
||||
if (index < max_metadata)
|
||||
pag->pagf_metadata = 1;
|
||||
else
|
||||
pag->pagf_metadata = 0;
|
||||
}
|
||||
} else {
|
||||
pag->pagi_inodeok = 1;
|
||||
pag->pagf_metadata = 0;
|
||||
}
|
||||
|
||||
if (xfs_set_inode_alloc_perag(pag, ino, max_metadata))
|
||||
maxagi++;
|
||||
xfs_perag_put(pag);
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue