From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com, bfoster@redhat.com
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH 2/5] xfs: use the finobt block counts to speed up mount times
Date: Tue, 01 Sep 2020 19:56:05 -0700 [thread overview]
Message-ID: <159901536498.547164.1936784142034292353.stgit@magnolia> (raw)
In-Reply-To: <159901535219.547164.1381621861988558776.stgit@magnolia>
From: Darrick J. Wong <darrick.wong@oracle.com>
Now that we have reliable finobt block counts, use them to speed up the
per-AG block reservation calculations at mount time.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
fs/xfs/libxfs/xfs_ialloc_btree.c | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c
index cf51b342b6ef..1df04e48bd87 100644
--- a/fs/xfs/libxfs/xfs_ialloc_btree.c
+++ b/fs/xfs/libxfs/xfs_ialloc_btree.c
@@ -697,6 +697,28 @@ xfs_inobt_count_blocks(
return error;
}
+/* Read finobt block count from AGI header. */
+static int
+xfs_finobt_read_blocks(
+ struct xfs_mount *mp,
+ struct xfs_trans *tp,
+ xfs_agnumber_t agno,
+ xfs_extlen_t *tree_blocks)
+{
+ struct xfs_buf *agbp;
+ struct xfs_agi *agi;
+ int error;
+
+ error = xfs_ialloc_read_agi(mp, tp, agno, &agbp);
+ if (error)
+ return error;
+
+ agi = agbp->b_addr;
+ *tree_blocks = be32_to_cpu(agi->agi_fblocks);
+ xfs_trans_brelse(tp, agbp);
+ return 0;
+}
+
/*
* Figure out how many blocks to reserve and how many are used by this btree.
*/
@@ -714,7 +736,11 @@ xfs_finobt_calc_reserves(
if (!xfs_sb_version_hasfinobt(&mp->m_sb))
return 0;
- error = xfs_inobt_count_blocks(mp, tp, agno, XFS_BTNUM_FINO, &tree_len);
+ if (xfs_sb_version_hasinobtcounts(&mp->m_sb))
+ error = xfs_finobt_read_blocks(mp, tp, agno, &tree_len);
+ else
+ error = xfs_inobt_count_blocks(mp, tp, agno, XFS_BTNUM_FINO,
+ &tree_len);
if (error)
return error;
next prev parent reply other threads:[~2020-09-02 2:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 2:55 [PATCH v4 0/5] xfs: add inode btree blocks counters to the AGI header Darrick J. Wong
2020-09-02 2:55 ` [PATCH 1/5] xfs: store inode btree block counts in " Darrick J. Wong
2020-09-02 13:23 ` Brian Foster
2020-09-02 17:13 ` Darrick J. Wong
2020-09-02 2:56 ` Darrick J. Wong [this message]
2020-09-02 2:56 ` [PATCH 3/5] xfs: support inode btree blockcounts in online scrub Darrick J. Wong
2020-09-02 2:56 ` [PATCH 4/5] xfs: support inode btree blockcounts in online repair Darrick J. Wong
2020-09-02 13:23 ` Brian Foster
2020-09-02 2:56 ` [PATCH 5/5] xfs: enable new inode btree counters feature Darrick J. Wong
-- strict thread matches above, loose matches on Subject: below --
2020-08-28 2:36 [PATCH v3 0/5] xfs: add inode btree blocks counters to the AGI header Darrick J. Wong
2020-08-28 2:36 ` [PATCH 2/5] xfs: use the finobt block counts to speed up mount times Darrick J. Wong
2020-08-31 19:06 ` Brian Foster
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