Start abstracting the perag references so that the indexing of the
structures is not directly coded into all the places that uses the
perag structures. This will allow us to separate the use of the
perag structure and the way it is indexed and hence avoid the known
deadlocks related to growing a busy filesystem.
Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
xfs_agf_t *agf;
xfs_perag_t *pag; /* per allocation group data */
xfs_agf_t *agf;
xfs_perag_t *pag; /* per allocation group data */
+ pag = xfs_perag_get(mp, agno);
+ pag->pagf_freeblks += len;
+ xfs_perag_put(pag);
+
agf = XFS_BUF_TO_AGF(agbp);
agf = XFS_BUF_TO_AGF(agbp);
- pag = &mp->m_perag[agno];
be32_add_cpu(&agf->agf_freeblks, len);
xfs_trans_agblocks_delta(tp, len);
be32_add_cpu(&agf->agf_freeblks, len);
xfs_trans_agblocks_delta(tp, len);
- pag->pagf_freeblks += len;
XFS_WANT_CORRUPTED_GOTO(
be32_to_cpu(agf->agf_freeblks) <=
be32_to_cpu(agf->agf_length),
XFS_WANT_CORRUPTED_GOTO(
be32_to_cpu(agf->agf_freeblks) <=
be32_to_cpu(agf->agf_length),
xfs_trans_brelse(tp, agflbp);
if (be32_to_cpu(agf->agf_flfirst) == XFS_AGFL_SIZE(mp))
agf->agf_flfirst = 0;
xfs_trans_brelse(tp, agflbp);
if (be32_to_cpu(agf->agf_flfirst) == XFS_AGFL_SIZE(mp))
agf->agf_flfirst = 0;
- pag = &mp->m_perag[be32_to_cpu(agf->agf_seqno)];
+
+ pag = xfs_perag_get(mp, be32_to_cpu(agf->agf_seqno));
be32_add_cpu(&agf->agf_flcount, -1);
xfs_trans_agflist_delta(tp, -1);
pag->pagf_flcount--;
be32_add_cpu(&agf->agf_flcount, -1);
xfs_trans_agflist_delta(tp, -1);
pag->pagf_flcount--;
logflags = XFS_AGF_FLFIRST | XFS_AGF_FLCOUNT;
if (btreeblk) {
logflags = XFS_AGF_FLFIRST | XFS_AGF_FLCOUNT;
if (btreeblk) {
be32_add_cpu(&agf->agf_fllast, 1);
if (be32_to_cpu(agf->agf_fllast) == XFS_AGFL_SIZE(mp))
agf->agf_fllast = 0;
be32_add_cpu(&agf->agf_fllast, 1);
if (be32_to_cpu(agf->agf_fllast) == XFS_AGFL_SIZE(mp))
agf->agf_fllast = 0;
- pag = &mp->m_perag[be32_to_cpu(agf->agf_seqno)];
+
+ pag = xfs_perag_get(mp, be32_to_cpu(agf->agf_seqno));
be32_add_cpu(&agf->agf_flcount, 1);
xfs_trans_agflist_delta(tp, 1);
pag->pagf_flcount++;
be32_add_cpu(&agf->agf_flcount, 1);
xfs_trans_agflist_delta(tp, 1);
pag->pagf_flcount++;
pag->pagf_btreeblks--;
logflags |= XFS_AGF_BTREEBLKS;
}
pag->pagf_btreeblks--;
logflags |= XFS_AGF_BTREEBLKS;
}
xfs_alloc_log_agf(tp, agbp, logflags);
xfs_alloc_log_agf(tp, agbp, logflags);
xfs_trans_brelse(tp, *bpp);
return XFS_ERROR(EFSCORRUPTED);
}
xfs_trans_brelse(tp, *bpp);
return XFS_ERROR(EFSCORRUPTED);
}
XFS_BUF_SET_VTYPE_REF(*bpp, B_FS_AGF, XFS_AGF_REF);
return 0;
}
XFS_BUF_SET_VTYPE_REF(*bpp, B_FS_AGF, XFS_AGF_REF);
return 0;
}
ASSERT(!XFS_BUF_GETERROR(*bpp));
agf = XFS_BUF_TO_AGF(*bpp);
ASSERT(!XFS_BUF_GETERROR(*bpp));
agf = XFS_BUF_TO_AGF(*bpp);
- pag = &mp->m_perag[agno];
+ pag = xfs_perag_get(mp, agno);
if (!pag->pagf_init) {
pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks);
pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks);
if (!pag->pagf_init) {
pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks);
pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks);
be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]));
}
#endif
be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]));
}
#endif
*/
args->agno = XFS_FSB_TO_AGNO(mp, args->fsbno);
down_read(&mp->m_peraglock);
*/
args->agno = XFS_FSB_TO_AGNO(mp, args->fsbno);
down_read(&mp->m_peraglock);
- args->pag = &mp->m_perag[args->agno];
+ args->pag = xfs_perag_get(mp, args->agno);
args->minleft = 0;
error = xfs_alloc_fix_freelist(args, 0);
args->minleft = minleft;
args->minleft = 0;
error = xfs_alloc_fix_freelist(args, 0);
args->minleft = minleft;
*/
down_read(&mp->m_peraglock);
for (;;) {
*/
down_read(&mp->m_peraglock);
for (;;) {
- args->pag = &mp->m_perag[args->agno];
+ args->pag = xfs_perag_get(mp, args->agno);
if (no_min) args->minleft = 0;
error = xfs_alloc_fix_freelist(args, flags);
args->minleft = minleft;
if (no_min) args->minleft = 0;
error = xfs_alloc_fix_freelist(args, flags);
args->minleft = minleft;
+ xfs_perag_put(args->pag);
}
up_read(&mp->m_peraglock);
if (bump_rotor || (type == XFS_ALLOCTYPE_ANY_AG)) {
}
up_read(&mp->m_peraglock);
if (bump_rotor || (type == XFS_ALLOCTYPE_ANY_AG)) {
+ xfs_perag_put(args->pag);
+ xfs_perag_put(args->pag);
up_read(&mp->m_peraglock);
return error;
}
up_read(&mp->m_peraglock);
return error;
}
ASSERT(args.agno < args.mp->m_sb.sb_agcount);
args.agbno = XFS_FSB_TO_AGBNO(args.mp, bno);
down_read(&args.mp->m_peraglock);
ASSERT(args.agno < args.mp->m_sb.sb_agcount);
args.agbno = XFS_FSB_TO_AGBNO(args.mp, bno);
down_read(&args.mp->m_peraglock);
- args.pag = &args.mp->m_perag[args.agno];
+ args.pag = xfs_perag_get(args.mp, args.agno);
if ((error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING)))
goto error0;
#ifdef DEBUG
if ((error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING)))
goto error0;
#ifdef DEBUG
#endif
error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno, len, 0);
error0:
#endif
error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno, len, 0);
error0:
+ xfs_perag_put(args.pag);
up_read(&args.mp->m_peraglock);
return error;
}
up_read(&args.mp->m_peraglock);
return error;
}
xfs_agblock_t bno,
xfs_extlen_t len)
{
xfs_agblock_t bno,
xfs_extlen_t len)
{
- mp = tp->t_mountp;
- spin_lock(&mp->m_perag[agno].pagb_lock);
+ pag = xfs_perag_get(tp->t_mountp, agno);
+ spin_lock(&pag->pagb_lock);
/* search pagb_list for an open slot */
/* search pagb_list for an open slot */
- for (bsy = mp->m_perag[agno].pagb_list, n = 0;
+ for (bsy = pag->pagb_list, n = 0;
n < XFS_PAGB_NUM_SLOTS;
bsy++, n++) {
if (bsy->busy_tp == NULL) {
n < XFS_PAGB_NUM_SLOTS;
bsy++, n++) {
if (bsy->busy_tp == NULL) {
- trace_xfs_alloc_busy(mp, agno, bno, len, n);
+ trace_xfs_alloc_busy(tp->t_mountp, agno, bno, len, n);
if (n < XFS_PAGB_NUM_SLOTS) {
if (n < XFS_PAGB_NUM_SLOTS) {
- bsy = &mp->m_perag[agno].pagb_list[n];
- mp->m_perag[agno].pagb_count++;
+ bsy = &pag->pagb_list[n];
+ pag->pagb_count++;
bsy->busy_start = bno;
bsy->busy_length = len;
bsy->busy_tp = tp;
bsy->busy_start = bno;
bsy->busy_length = len;
bsy->busy_tp = tp;
xfs_trans_set_sync(tp);
}
xfs_trans_set_sync(tp);
}
- spin_unlock(&mp->m_perag[agno].pagb_lock);
+ spin_unlock(&pag->pagb_lock);
+ xfs_perag_put(pag);
xfs_agnumber_t agno,
int idx)
{
xfs_agnumber_t agno,
int idx)
{
- mp = tp->t_mountp;
-
- spin_lock(&mp->m_perag[agno].pagb_lock);
- list = mp->m_perag[agno].pagb_list;
-
ASSERT(idx < XFS_PAGB_NUM_SLOTS);
ASSERT(idx < XFS_PAGB_NUM_SLOTS);
+ pag = xfs_perag_get(tp->t_mountp, agno);
+ spin_lock(&pag->pagb_lock);
+ list = pag->pagb_list;
- trace_xfs_alloc_unbusy(mp, agno, idx, list[idx].busy_tp == tp);
+ trace_xfs_alloc_unbusy(tp->t_mountp, agno, idx, list[idx].busy_tp == tp);
if (list[idx].busy_tp == tp) {
list[idx].busy_tp = NULL;
if (list[idx].busy_tp == tp) {
list[idx].busy_tp = NULL;
- mp->m_perag[agno].pagb_count--;
- spin_unlock(&mp->m_perag[agno].pagb_lock);
+ spin_unlock(&pag->pagb_lock);
+ xfs_perag_put(pag);
xfs_agblock_t bno,
xfs_extlen_t len)
{
xfs_agblock_t bno,
xfs_extlen_t len)
{
xfs_perag_busy_t *bsy;
xfs_agblock_t uend, bend;
xfs_lsn_t lsn = 0;
int cnt;
xfs_perag_busy_t *bsy;
xfs_agblock_t uend, bend;
xfs_lsn_t lsn = 0;
int cnt;
- mp = tp->t_mountp;
-
- spin_lock(&mp->m_perag[agno].pagb_lock);
-
- uend = bno + len - 1;
+ pag = xfs_perag_get(tp->t_mountp, agno);
+ spin_lock(&pag->pagb_lock);
+ cnt = pag->pagb_count;
/*
* search pagb_list for this slot, skipping open slots. We have to
/*
* search pagb_list for this slot, skipping open slots. We have to
* we have to get the most recent LSN for the log force to push out
* all the transactions that span the range.
*/
* we have to get the most recent LSN for the log force to push out
* all the transactions that span the range.
*/
- for (cnt = 0; cnt < mp->m_perag[agno].pagb_count; cnt++) {
- bsy = &mp->m_perag[agno].pagb_list[cnt];
+ uend = bno + len - 1;
+ for (cnt = 0; cnt < pag->pagb_count; cnt++) {
+ bsy = &pag->pagb_list[cnt];
if (!bsy->busy_tp)
continue;
if (!bsy->busy_tp)
continue;
if (XFS_LSN_CMP(bsy->busy_tp->t_commit_lsn, lsn) > 0)
lsn = bsy->busy_tp->t_commit_lsn;
}
if (XFS_LSN_CMP(bsy->busy_tp->t_commit_lsn, lsn) > 0)
lsn = bsy->busy_tp->t_commit_lsn;
}
- spin_unlock(&mp->m_perag[agno].pagb_lock);
+ spin_unlock(&pag->pagb_lock);
+ xfs_perag_put(pag);
trace_xfs_alloc_busysearch(tp->t_mountp, agno, bno, len, lsn);
/*
trace_xfs_alloc_busysearch(tp->t_mountp, agno, bno, len, lsn);
/*
* transaction that freed the block
*/
if (lsn)
* transaction that freed the block
*/
if (lsn)
- xfs_log_force(mp, lsn, XFS_LOG_FORCE|XFS_LOG_SYNC);
+ xfs_log_force(tp->t_mountp, lsn, XFS_LOG_FORCE|XFS_LOG_SYNC);
struct xfs_agf *agf = XFS_BUF_TO_AGF(agbp);
xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno);
int btnum = cur->bc_btnum;
struct xfs_agf *agf = XFS_BUF_TO_AGF(agbp);
xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno);
int btnum = cur->bc_btnum;
+ struct xfs_perag *pag = xfs_perag_get(cur->bc_mp, seqno);
ASSERT(ptr->s != 0);
agf->agf_roots[btnum] = ptr->s;
be32_add_cpu(&agf->agf_levels[btnum], inc);
ASSERT(ptr->s != 0);
agf->agf_roots[btnum] = ptr->s;
be32_add_cpu(&agf->agf_levels[btnum], inc);
- cur->bc_mp->m_perag[seqno].pagf_levels[btnum] += inc;
+ pag->pagf_levels[btnum] += inc;
+ xfs_perag_put(pag);
xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS);
}
xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS);
}
{
struct xfs_agf *agf = XFS_BUF_TO_AGF(cur->bc_private.a.agbp);
xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno);
{
struct xfs_agf *agf = XFS_BUF_TO_AGF(cur->bc_private.a.agbp);
xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno);
}
agf->agf_longest = len;
}
agf->agf_longest = len;
- cur->bc_mp->m_perag[seqno].pagf_longest = be32_to_cpu(len);
+ pag = xfs_perag_get(cur->bc_mp, seqno);
+ pag->pagf_longest = be32_to_cpu(len);
+ xfs_perag_put(pag);
xfs_alloc_log_agf(cur->bc_tp, cur->bc_private.a.agbp, XFS_AGF_LONGEST);
}
xfs_alloc_log_agf(cur->bc_tp, cur->bc_private.a.agbp, XFS_AGF_LONGEST);
}