[PATCH 03/50] xfs: pass perag to xfs_ialloc_read_agi()

Dave Chinner
2022-06-11T01:27:18Z

xfs_ialloc_read_agi() initialises the perag if it hasn't been done
yet, so it makes sense to pass it the perag rather than pull a
reference from the buffer. This allows callers to be per-ag centric
rather than passing mount/agno pairs everywhere.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/libxfs/xfs_ag.c | 23 +++++++++++++----------
fs/xfs/libxfs/xfs_ialloc.c | 23 ++++++++++-------------
fs/xfs/libxfs/xfs_ialloc.h | 7 ++-----
fs/xfs/libxfs/xfs_ialloc_btree.c | 9 ++++-----
fs/xfs/scrub/common.c | 2 +-
fs/xfs/scrub/fscounters.c | 2 +-
fs/xfs/scrub/repair.c | 2 +-
7 files changed, 32 insertions(+), 36 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c
index 355af8fe90c8..74862823311a 100644
--- a/fs/xfs/libxfs/xfs_ag.c
+++ b/fs/xfs/libxfs/xfs_ag.c
@@ -128,11 +128,13 @@ xfs_initialize_perag_data(
if (error)
return error;

- error = xfs_ialloc_read_agi(mp, NULL, index, NULL);
- if (error)
+ pag = xfs_perag_get(mp, index);
+ error = xfs_ialloc_read_agi(pag, NULL, NULL);
+ if (error) {
+ xfs_perag_put(pag);
return error;
+ }

- pag = xfs_perag_get(mp, index);
ifree += pag->pagi_freecount;
ialloc += pag->pagi_count;
bfree += pag->pagf_freeblks;
@@ -784,7 +786,7 @@ xfs_ag_shrink_space(
int error, err2;

ASSERT(pag->pag_agno == mp->m_sb.sb_agcount - 1);
- error = xfs_ialloc_read_agi(mp, *tpp, pag->pag_agno, &agibp);
+ error = xfs_ialloc_read_agi(pag, *tpp, &agibp);
if (error)
return error;

@@ -816,7 +818,7 @@ xfs_ag_shrink_space(
* Disable perag reservations so it doesn't cause the allocation request
* to fail. We'll reestablish reservation before we return.
*/
- error = xfs_ag_resv_free(agibp->b_pag);
+ error = xfs_ag_resv_free(pag);
if (error)
return error;

@@ -833,7 +835,7 @@ xfs_ag_shrink_space(
xfs_trans_bhold(*tpp, agfbp);
err2 = xfs_trans_roll(tpp);
if (err2)
- return err2;
+ return error;
xfs_trans_bjoin(*tpp, agfbp);
goto resv_init_out;
}
@@ -845,7 +847,7 @@ xfs_ag_shrink_space(
be32_add_cpu(&agi->agi_length, -delta);
be32_add_cpu(&agf->agf_length, -delta);

- err2 = xfs_ag_resv_init(agibp->b_pag, *tpp);
+ err2 = xfs_ag_resv_init(pag, *tpp);
if (err2) {
be32_add_cpu(&agi->agi_length, delta);
be32_add_cpu(&agf->agf_length, delta);
@@ -869,8 +871,9 @@ xfs_ag_shrink_space(
xfs_ialloc_log_agi(*tpp, agibp, XFS_AGI_LENGTH);
xfs_alloc_log_agf(*tpp, agfbp, XFS_AGF_LENGTH);
return 0;
+
resv_init_out:
- err2 = xfs_ag_resv_init(agibp->b_pag, *tpp);
+ err2 = xfs_ag_resv_init(pag, *tpp);
if (!err2)
return error;
resv_err:
@@ -895,7 +898,7 @@ xfs_ag_extend_space(

ASSERT(pag->pag_agno == pag->pag_mount->m_sb.sb_agcount - 1);

- error = xfs_ialloc_read_agi(pag->pag_mount, tp, pag->pag_agno, &bp);
+ error = xfs_ialloc_read_agi(pag, tp, &bp);
if (error)
return error;

@@ -946,7 +949,7 @@ xfs_ag_get_geometry(
int error;

/* Lock the AG headers. */
- error = xfs_ialloc_read_agi(pag->pag_mount, NULL, pag->pag_agno, &agi_bp);
+ error = xfs_ialloc_read_agi(pag, NULL, &agi_bp);
if (error)
return error;
error = xfs_alloc_read_agf(pag->pag_mount, NULL, pag->pag_agno, 0, &agf_bp);
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index cefac2a1ba0c..a7259404377d 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -1610,7 +1610,7 @@ xfs_dialloc_good_ag(
return false;

if (!pag->pagi_init) {
- error = xfs_ialloc_read_agi(mp, tp, pag->pag_agno, NULL);
+ error = xfs_ialloc_read_agi(pag, tp, NULL);
if (error)
return false;
}
@@ -1679,7 +1679,7 @@ xfs_dialloc_try_ag(
* Then read in the AGI buffer and recheck with the AGI buffer
* lock held.
*/
- error = xfs_ialloc_read_agi(pag->pag_mount, *tpp, pag->pag_agno, &agbp);
+ error = xfs_ialloc_read_agi(pag, *tpp, &agbp);
if (error)
return error;

@@ -2169,7 +2169,7 @@ xfs_difree(
/*
* Get the allocation group header.
*/
- error = xfs_ialloc_read_agi(mp, tp, pag->pag_agno, &agbp);
+ error = xfs_ialloc_read_agi(pag, tp, &agbp);
if (error) {
xfs_warn(mp, "%s: xfs_ialloc_read_agi() returned error %d.",
__func__, error);
@@ -2215,7 +2215,7 @@ xfs_imap_lookup(
int error;
int i;

- error = xfs_ialloc_read_agi(mp, tp, pag->pag_agno, &agbp);
+ error = xfs_ialloc_read_agi(pag, tp, &agbp);
if (error) {
xfs_alert(mp,
"%s: xfs_ialloc_read_agi() returned error %d, agno %d",
@@ -2599,24 +2599,21 @@ xfs_read_agi(
*/
int
xfs_ialloc_read_agi(
- struct xfs_mount *mp, /* file system mount structure */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
+ struct xfs_perag *pag,
+ struct xfs_trans *tp,
struct xfs_buf **agibpp)
{
struct xfs_buf *agibp;
- struct xfs_agi *agi; /* allocation group header */
- struct xfs_perag *pag; /* per allocation group data */
+ struct xfs_agi *agi;
int error;

- trace_xfs_ialloc_read_agi(mp, agno);
+ trace_xfs_ialloc_read_agi(pag->pag_mount, pag->pag_agno);

- error = xfs_read_agi(mp, tp, agno, &agibp);
+ error = xfs_read_agi(pag->pag_mount, tp, pag->pag_agno, &agibp);
if (error)
return error;

agi = agibp->b_addr;
- pag = agibp->b_pag;
if (!pag->pagi_init) {
pag->pagi_freecount = be32_to_cpu(agi->agi_freecount);
pag->pagi_count = be32_to_cpu(agi->agi_count);
@@ -2628,7 +2625,7 @@ xfs_ialloc_read_agi(
* we are in the middle of a forced shutdown.
*/
ASSERT(pag->pagi_freecount == be32_to_cpu(agi->agi_freecount) ||
- xfs_is_shutdown(mp));
+ xfs_is_shutdown(pag->pag_mount));
if (agibpp)
*agibpp = agibp;
else
diff --git a/fs/xfs/libxfs/xfs_ialloc.h b/fs/xfs/libxfs/xfs_ialloc.h
index 1ff42bf1e4b3..72cb33170d9f 100644
--- a/fs/xfs/libxfs/xfs_ialloc.h
+++ b/fs/xfs/libxfs/xfs_ialloc.h
@@ -66,11 +66,8 @@ xfs_ialloc_log_agi(
* Read in the allocation group header (inode allocation section)
*/
int /* error */
-xfs_ialloc_read_agi(
- struct xfs_mount *mp, /* file system mount structure */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
- struct xfs_buf **bpp); /* allocation group hdr buf */
+xfs_ialloc_read_agi(struct xfs_perag *pag, struct xfs_trans *tp,
+ struct xfs_buf **agibpp);

/*
* Lookup a record by ino in the btree given by cur.
diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c
index b2ad2fdc40f5..aa4367a0a0de 100644
--- a/fs/xfs/libxfs/xfs_ialloc_btree.c
+++ b/fs/xfs/libxfs/xfs_ialloc_btree.c
@@ -722,7 +722,7 @@ xfs_inobt_cur(
ASSERT(*agi_bpp == NULL);
ASSERT(*curpp == NULL);

- error = xfs_ialloc_read_agi(mp, tp, pag->pag_agno, agi_bpp);
+ error = xfs_ialloc_read_agi(pag, tp, agi_bpp);
if (error)
return error;

@@ -757,16 +757,15 @@ xfs_inobt_count_blocks(
/* Read finobt block count from AGI header. */
static int
xfs_finobt_read_blocks(
- struct xfs_mount *mp,
- struct xfs_trans *tp,
struct xfs_perag *pag,
+ struct xfs_trans *tp,
xfs_extlen_t *tree_blocks)
{
struct xfs_buf *agbp;
struct xfs_agi *agi;
int error;

- error = xfs_ialloc_read_agi(mp, tp, pag->pag_agno, &agbp);
+ error = xfs_ialloc_read_agi(pag, tp, &agbp);
if (error)
return error;

@@ -794,7 +793,7 @@ xfs_finobt_calc_reserves(
return 0;

if (xfs_has_inobtcounts(mp))
- error = xfs_finobt_read_blocks(mp, tp, pag, &tree_len);
+ error = xfs_finobt_read_blocks(pag, tp, &tree_len);
else
error = xfs_inobt_count_blocks(mp, tp, pag, XFS_BTNUM_FINO,
&tree_len);
diff --git a/fs/xfs/scrub/common.c b/fs/xfs/scrub/common.c
index 97b54ac3075f..62997791694a 100644
--- a/fs/xfs/scrub/common.c
+++ b/fs/xfs/scrub/common.c
@@ -416,7 +416,7 @@ xchk_ag_read_headers(
if (!sa->pag)
return -ENOENT;

- error = xfs_ialloc_read_agi(mp, sc->tp, agno, &sa->agi_bp);
+ error = xfs_ialloc_read_agi(sa->pag, sc->tp, &sa->agi_bp);
if (error && want_ag_read_header_failure(sc, XFS_SCRUB_TYPE_AGI))
return error;

diff --git a/fs/xfs/scrub/fscounters.c b/fs/xfs/scrub/fscounters.c
index 48a6cbdf95d0..bd06a184c81c 100644
--- a/fs/xfs/scrub/fscounters.c
+++ b/fs/xfs/scrub/fscounters.c
@@ -78,7 +78,7 @@ xchk_fscount_warmup(
continue;

/* Lock both AG headers. */
- error = xfs_ialloc_read_agi(mp, sc->tp, agno, &agi_bp);
+ error = xfs_ialloc_read_agi(pag, sc->tp, &agi_bp);
if (error)
break;
error = xfs_alloc_read_agf(mp, sc->tp, agno, 0, &agf_bp);
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 1e7b6b209ee8..14acf1df3dd3 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -199,7 +199,7 @@ xrep_calc_ag_resblks(
icount = pag->pagi_count;
} else {
/* Try to get the actual counters from disk. */
- error = xfs_ialloc_read_agi(mp, NULL, sm->sm_agno, &bp);
+ error = xfs_ialloc_read_agi(pag, NULL, &bp);
if (!error) {
icount = pag->pagi_count;
xfs_buf_relse(bp);
--
2.35.1