From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org, david@fromorbit.com
Cc: linux-xfs@vger.kernel.org, chandan.babu@oracle.com, hch@lst.de
Subject: [PATCH 08/15] xfs: encode the max btree height in the cursor
Date: Tue, 12 Oct 2021 16:33:17 -0700 [thread overview]
Message-ID: <163408159784.4151249.6976364349258667730.stgit@magnolia> (raw)
In-Reply-To: <163408155346.4151249.8364703447365270670.stgit@magnolia>
From: Darrick J. Wong <djwong@kernel.org>
Encode the maximum btree height in the cursor, since we're soon going to
allow smaller cursors for AG btrees and larger cursors for file btrees.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/libxfs/xfs_bmap.c | 2 +-
fs/xfs/libxfs/xfs_btree.c | 4 ++--
fs/xfs/libxfs/xfs_btree.h | 2 ++
fs/xfs/libxfs/xfs_btree_staging.c | 10 +++++-----
4 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 644b956301b6..2ae5bf9a74e7 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -239,7 +239,7 @@ xfs_bmap_get_bp(
if (!cur)
return NULL;
- for (i = 0; i < XFS_BTREE_MAXLEVELS; i++) {
+ for (i = 0; i < cur->bc_maxlevels; i++) {
if (!cur->bc_levels[i].bp)
break;
if (xfs_buf_daddr(cur->bc_levels[i].bp) == bno)
diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 25dfab81025f..6ced8f028d47 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -2933,7 +2933,7 @@ xfs_btree_new_iroot(
be16_add_cpu(&block->bb_level, 1);
xfs_btree_set_numrecs(block, 1);
cur->bc_nlevels++;
- ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
+ ASSERT(cur->bc_nlevels <= cur->bc_maxlevels);
cur->bc_levels[level + 1].ptr = 1;
kp = xfs_btree_key_addr(cur, 1, block);
@@ -3097,7 +3097,7 @@ xfs_btree_new_root(
xfs_btree_setbuf(cur, cur->bc_nlevels, nbp);
cur->bc_levels[cur->bc_nlevels].ptr = nptr;
cur->bc_nlevels++;
- ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
+ ASSERT(cur->bc_nlevels <= cur->bc_maxlevels);
*stat = 1;
return 0;
error0:
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h
index 76509e819d60..43766e5b680f 100644
--- a/fs/xfs/libxfs/xfs_btree.h
+++ b/fs/xfs/libxfs/xfs_btree.h
@@ -238,6 +238,7 @@ struct xfs_btree_cur
xfs_btnum_t bc_btnum; /* identifies which btree type */
union xfs_btree_irec bc_rec; /* current insert/search record value */
uint8_t bc_nlevels; /* number of levels in the tree */
+ uint8_t bc_maxlevels; /* maximum levels for this btree type */
int bc_statoff; /* offset of btree stats array */
/*
@@ -585,6 +586,7 @@ xfs_btree_alloc_cursor(
cur->bc_tp = tp;
cur->bc_mp = mp;
cur->bc_btnum = btnum;
+ cur->bc_maxlevels = XFS_BTREE_MAXLEVELS;
return cur;
}
diff --git a/fs/xfs/libxfs/xfs_btree_staging.c b/fs/xfs/libxfs/xfs_btree_staging.c
index cc56efc2b90a..dd75e208b543 100644
--- a/fs/xfs/libxfs/xfs_btree_staging.c
+++ b/fs/xfs/libxfs/xfs_btree_staging.c
@@ -657,12 +657,12 @@ xfs_btree_bload_compute_geometry(
* checking levels 0 and 1 here, so set bc_nlevels such that the btree
* code doesn't interpret either as the root level.
*/
- cur->bc_nlevels = XFS_BTREE_MAXLEVELS - 1;
+ cur->bc_nlevels = cur->bc_maxlevels - 1;
xfs_btree_bload_ensure_slack(cur, &bbl->leaf_slack, 0);
xfs_btree_bload_ensure_slack(cur, &bbl->node_slack, 1);
bbl->nr_records = nr_this_level = nr_records;
- for (cur->bc_nlevels = 1; cur->bc_nlevels <= XFS_BTREE_MAXLEVELS;) {
+ for (cur->bc_nlevels = 1; cur->bc_nlevels <= cur->bc_maxlevels;) {
uint64_t level_blocks;
uint64_t dontcare64;
unsigned int level = cur->bc_nlevels - 1;
@@ -703,7 +703,7 @@ xfs_btree_bload_compute_geometry(
* block-based btree level.
*/
cur->bc_nlevels++;
- ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
+ ASSERT(cur->bc_nlevels <= cur->bc_maxlevels);
xfs_btree_bload_level_geometry(cur, bbl, level,
nr_this_level, &avg_per_block,
&level_blocks, &dontcare64);
@@ -719,14 +719,14 @@ xfs_btree_bload_compute_geometry(
/* Otherwise, we need another level of btree. */
cur->bc_nlevels++;
- ASSERT(cur->bc_nlevels <= XFS_BTREE_MAXLEVELS);
+ ASSERT(cur->bc_nlevels <= cur->bc_maxlevels);
}
nr_blocks += level_blocks;
nr_this_level = level_blocks;
}
- if (cur->bc_nlevels > XFS_BTREE_MAXLEVELS)
+ if (cur->bc_nlevels > cur->bc_maxlevels)
return -EOVERFLOW;
bbl->btree_height = cur->bc_nlevels;
next prev parent reply other threads:[~2021-10-12 23:33 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-12 23:32 [PATCHSET v3 00/15] xfs: support dynamic btree cursor height Darrick J. Wong
2021-10-12 23:32 ` [PATCH 01/15] xfs: remove xfs_btree_cur.bc_blocklog Darrick J. Wong
2021-10-13 0:56 ` Dave Chinner
2021-10-12 23:32 ` [PATCH 02/15] xfs: reduce the size of nr_ops for refcount btree cursors Darrick J. Wong
2021-10-13 0:57 ` Dave Chinner
2021-10-12 23:32 ` [PATCH 03/15] xfs: don't track firstrec/firstkey separately in xchk_btree Darrick J. Wong
2021-10-13 1:02 ` Dave Chinner
2021-10-12 23:32 ` [PATCH 04/15] xfs: dynamically allocate btree scrub context structure Darrick J. Wong
2021-10-13 4:57 ` Dave Chinner
2021-10-13 16:29 ` Darrick J. Wong
2021-10-12 23:33 ` [PATCH 05/15] xfs: support dynamic btree cursor heights Darrick J. Wong
2021-10-13 5:31 ` Dave Chinner
2021-10-13 16:52 ` Darrick J. Wong
2021-10-13 21:14 ` Dave Chinner
2021-10-12 23:33 ` [PATCH 06/15] xfs: rearrange xfs_btree_cur fields for better packing Darrick J. Wong
2021-10-13 5:34 ` Dave Chinner
2021-10-12 23:33 ` [PATCH 07/15] xfs: refactor btree cursor allocation function Darrick J. Wong
2021-10-13 5:34 ` Dave Chinner
2021-10-12 23:33 ` Darrick J. Wong [this message]
2021-10-13 5:38 ` [PATCH 08/15] xfs: encode the max btree height in the cursor Dave Chinner
2021-10-12 23:33 ` [PATCH 09/15] xfs: dynamically allocate cursors based on maxlevels Darrick J. Wong
2021-10-13 5:40 ` Dave Chinner
2021-10-13 16:55 ` Darrick J. Wong
2021-10-12 23:33 ` [PATCH 10/15] xfs: compute actual maximum btree height for critical reservation calculation Darrick J. Wong
2021-10-13 5:49 ` Dave Chinner
2021-10-13 17:07 ` Darrick J. Wong
2021-10-13 20:18 ` Dave Chinner
2021-10-12 23:33 ` [PATCH 11/15] xfs: compute the maximum height of the rmap btree when reflink enabled Darrick J. Wong
2021-10-13 7:25 ` Dave Chinner
2021-10-13 17:47 ` Darrick J. Wong
2021-10-12 23:33 ` [PATCH 12/15] xfs: kill XFS_BTREE_MAXLEVELS Darrick J. Wong
2021-10-13 7:25 ` Dave Chinner
2021-10-12 23:33 ` [PATCH 13/15] xfs: widen btree maxlevels computation to handle 64-bit record counts Darrick J. Wong
2021-10-13 7:28 ` Dave Chinner
2021-10-12 23:33 ` [PATCH 14/15] xfs: compute absolute maximum nlevels for each btree type Darrick J. Wong
2021-10-13 7:57 ` Dave Chinner
2021-10-13 21:36 ` Darrick J. Wong
2021-10-13 23:48 ` Dave Chinner
2021-10-12 23:33 ` [PATCH 15/15] xfs: use separate btree cursor cache " Darrick J. Wong
2021-10-13 8:01 ` Dave Chinner
2021-10-13 21:42 ` Darrick J. Wong
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