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path: root/fs/xfs/libxfs/xfs_refcount_btree.c
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Diffstat (limited to 'fs/xfs/libxfs/xfs_refcount_btree.c')
-rw-r--r--fs/xfs/libxfs/xfs_refcount_btree.c93
1 files changed, 47 insertions, 46 deletions
diff --git a/fs/xfs/libxfs/xfs_refcount_btree.c b/fs/xfs/libxfs/xfs_refcount_btree.c
index a6ac60ae9421..1ef9b99962ab 100644
--- a/fs/xfs/libxfs/xfs_refcount_btree.c
+++ b/fs/xfs/libxfs/xfs_refcount_btree.c
@@ -9,7 +9,6 @@
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
-#include "xfs_sb.h"
#include "xfs_mount.h"
#include "xfs_btree.h"
#include "xfs_btree_staging.h"
@@ -20,20 +19,21 @@
#include "xfs_trans.h"
#include "xfs_bit.h"
#include "xfs_rmap.h"
+#include "xfs_ag.h"
static struct xfs_btree_cur *
xfs_refcountbt_dup_cursor(
struct xfs_btree_cur *cur)
{
return xfs_refcountbt_init_cursor(cur->bc_mp, cur->bc_tp,
- cur->bc_ag.agbp, cur->bc_ag.agno);
+ cur->bc_ag.agbp, cur->bc_ag.pag);
}
STATIC void
xfs_refcountbt_set_root(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *ptr,
- int inc)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_ptr *ptr,
+ int inc)
{
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
@@ -51,10 +51,10 @@ xfs_refcountbt_set_root(
STATIC int
xfs_refcountbt_alloc_block(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *start,
- union xfs_btree_ptr *new,
- int *stat)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_ptr *start,
+ union xfs_btree_ptr *new,
+ int *stat)
{
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
@@ -65,7 +65,7 @@ xfs_refcountbt_alloc_block(
args.tp = cur->bc_tp;
args.mp = cur->bc_mp;
args.type = XFS_ALLOCTYPE_NEAR_BNO;
- args.fsbno = XFS_AGB_TO_FSB(cur->bc_mp, cur->bc_ag.agno,
+ args.fsbno = XFS_AGB_TO_FSB(cur->bc_mp, cur->bc_ag.pag->pag_agno,
xfs_refc_block(args.mp));
args.oinfo = XFS_RMAP_OINFO_REFC;
args.minlen = args.maxlen = args.prod = 1;
@@ -74,13 +74,13 @@ xfs_refcountbt_alloc_block(
error = xfs_alloc_vextent(&args);
if (error)
goto out_error;
- trace_xfs_refcountbt_alloc_block(cur->bc_mp, cur->bc_ag.agno,
+ trace_xfs_refcountbt_alloc_block(cur->bc_mp, cur->bc_ag.pag->pag_agno,
args.agbno, 1);
if (args.fsbno == NULLFSBLOCK) {
*stat = 0;
return 0;
}
- ASSERT(args.agno == cur->bc_ag.agno);
+ ASSERT(args.agno == cur->bc_ag.pag->pag_agno);
ASSERT(args.len == 1);
new->s = cpu_to_be32(args.agbno);
@@ -102,10 +102,10 @@ xfs_refcountbt_free_block(
struct xfs_mount *mp = cur->bc_mp;
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
- xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp));
+ xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, xfs_buf_daddr(bp));
int error;
- trace_xfs_refcountbt_free_block(cur->bc_mp, cur->bc_ag.agno,
+ trace_xfs_refcountbt_free_block(cur->bc_mp, cur->bc_ag.pag->pag_agno,
XFS_FSB_TO_AGBNO(cur->bc_mp, fsbno), 1);
be32_add_cpu(&agf->agf_refcount_blocks, -1);
xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_REFCOUNT_BLOCKS);
@@ -135,18 +135,18 @@ xfs_refcountbt_get_maxrecs(
STATIC void
xfs_refcountbt_init_key_from_rec(
- union xfs_btree_key *key,
- union xfs_btree_rec *rec)
+ union xfs_btree_key *key,
+ const union xfs_btree_rec *rec)
{
key->refc.rc_startblock = rec->refc.rc_startblock;
}
STATIC void
xfs_refcountbt_init_high_key_from_rec(
- union xfs_btree_key *key,
- union xfs_btree_rec *rec)
+ union xfs_btree_key *key,
+ const union xfs_btree_rec *rec)
{
- __u32 x;
+ __u32 x;
x = be32_to_cpu(rec->refc.rc_startblock);
x += be32_to_cpu(rec->refc.rc_blockcount) - 1;
@@ -170,27 +170,27 @@ xfs_refcountbt_init_ptr_from_cur(
{
struct xfs_agf *agf = cur->bc_ag.agbp->b_addr;
- ASSERT(cur->bc_ag.agno == be32_to_cpu(agf->agf_seqno));
+ ASSERT(cur->bc_ag.pag->pag_agno == be32_to_cpu(agf->agf_seqno));
ptr->s = agf->agf_refcount_root;
}
STATIC int64_t
xfs_refcountbt_key_diff(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *key)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *key)
{
struct xfs_refcount_irec *rec = &cur->bc_rec.rc;
- struct xfs_refcount_key *kp = &key->refc;
+ const struct xfs_refcount_key *kp = &key->refc;
return (int64_t)be32_to_cpu(kp->rc_startblock) - rec->rc_startblock;
}
STATIC int64_t
xfs_refcountbt_diff_two_keys(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *k1,
- union xfs_btree_key *k2)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *k1,
+ const union xfs_btree_key *k2)
{
return (int64_t)be32_to_cpu(k1->refc.rc_startblock) -
be32_to_cpu(k2->refc.rc_startblock);
@@ -209,7 +209,7 @@ xfs_refcountbt_verify(
if (!xfs_verify_magic(bp, block->bb_magic))
return __this_address;
- if (!xfs_sb_version_hasreflink(&mp->m_sb))
+ if (!xfs_has_reflink(mp))
return __this_address;
fa = xfs_btree_sblock_v5hdr_verify(bp);
if (fa)
@@ -269,9 +269,9 @@ const struct xfs_buf_ops xfs_refcountbt_buf_ops = {
STATIC int
xfs_refcountbt_keys_inorder(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *k1,
- union xfs_btree_key *k2)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *k1,
+ const union xfs_btree_key *k2)
{
return be32_to_cpu(k1->refc.rc_startblock) <
be32_to_cpu(k2->refc.rc_startblock);
@@ -279,9 +279,9 @@ xfs_refcountbt_keys_inorder(
STATIC int
xfs_refcountbt_recs_inorder(
- struct xfs_btree_cur *cur,
- union xfs_btree_rec *r1,
- union xfs_btree_rec *r2)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_rec *r1,
+ const union xfs_btree_rec *r2)
{
return be32_to_cpu(r1->refc.rc_startblock) +
be32_to_cpu(r1->refc.rc_blockcount) <=
@@ -316,12 +316,11 @@ static struct xfs_btree_cur *
xfs_refcountbt_init_common(
struct xfs_mount *mp,
struct xfs_trans *tp,
- xfs_agnumber_t agno)
+ struct xfs_perag *pag)
{
struct xfs_btree_cur *cur;
- ASSERT(agno != NULLAGNUMBER);
- ASSERT(agno < mp->m_sb.sb_agcount);
+ ASSERT(pag->pag_agno < mp->m_sb.sb_agcount);
cur = kmem_cache_zalloc(xfs_btree_cur_zone, GFP_NOFS | __GFP_NOFAIL);
cur->bc_tp = tp;
@@ -330,9 +329,12 @@ xfs_refcountbt_init_common(
cur->bc_blocklog = mp->m_sb.sb_blocklog;
cur->bc_statoff = XFS_STATS_CALC_INDEX(xs_refcbt_2);
- cur->bc_ag.agno = agno;
cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
+ /* take a reference for the cursor */
+ atomic_inc(&pag->pag_ref);
+ cur->bc_ag.pag = pag;
+
cur->bc_ag.refc.nr_ops = 0;
cur->bc_ag.refc.shape_changes = 0;
cur->bc_ops = &xfs_refcountbt_ops;
@@ -345,12 +347,12 @@ xfs_refcountbt_init_cursor(
struct xfs_mount *mp,
struct xfs_trans *tp,
struct xfs_buf *agbp,
- xfs_agnumber_t agno)
+ struct xfs_perag *pag)
{
struct xfs_agf *agf = agbp->b_addr;
struct xfs_btree_cur *cur;
- cur = xfs_refcountbt_init_common(mp, tp, agno);
+ cur = xfs_refcountbt_init_common(mp, tp, pag);
cur->bc_nlevels = be32_to_cpu(agf->agf_refcount_level);
cur->bc_ag.agbp = agbp;
return cur;
@@ -361,11 +363,11 @@ struct xfs_btree_cur *
xfs_refcountbt_stage_cursor(
struct xfs_mount *mp,
struct xbtree_afakeroot *afake,
- xfs_agnumber_t agno)
+ struct xfs_perag *pag)
{
struct xfs_btree_cur *cur;
- cur = xfs_refcountbt_init_common(mp, NULL, agno);
+ cur = xfs_refcountbt_init_common(mp, NULL, pag);
xfs_btree_stage_afakeroot(cur, afake);
return cur;
}
@@ -450,7 +452,7 @@ int
xfs_refcountbt_calc_reserves(
struct xfs_mount *mp,
struct xfs_trans *tp,
- xfs_agnumber_t agno,
+ struct xfs_perag *pag,
xfs_extlen_t *ask,
xfs_extlen_t *used)
{
@@ -460,11 +462,10 @@ xfs_refcountbt_calc_reserves(
xfs_extlen_t tree_len;
int error;
- if (!xfs_sb_version_hasreflink(&mp->m_sb))
+ if (!xfs_has_reflink(mp))
return 0;
-
- error = xfs_alloc_read_agf(mp, tp, agno, 0, &agbp);
+ error = xfs_alloc_read_agf(mp, tp, pag->pag_agno, 0, &agbp);
if (error)
return error;
@@ -479,7 +480,7 @@ xfs_refcountbt_calc_reserves(
* expansion. We therefore can pretend the space isn't there.
*/
if (mp->m_sb.sb_logstart &&
- XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == agno)
+ XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == pag->pag_agno)
agblocks -= mp->m_sb.sb_logblocks;
*ask += xfs_refcountbt_max_size(mp, agblocks);
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