diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-08-26 10:54:27 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-09-15 20:52:39 -0700 |
| commit | 1ac35f061af011442eeb731632f6daae991ecf7c (patch) | |
| tree | 7cc0b01f337758cd41f71f748c154ec252bd1f75 /fs/xfs/libxfs/xfs_ialloc_btree.c | |
| parent | 2a39946c984464e4aac82c556ba9915589be7323 (diff) | |
xfs: use the finobt block counts to speed up mount times
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>
Diffstat (limited to 'fs/xfs/libxfs/xfs_ialloc_btree.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_ialloc_btree.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.c b/fs/xfs/libxfs/xfs_ialloc_btree.c index 6c42a2421cce..28b179d96812 100644 --- a/fs/xfs/libxfs/xfs_ialloc_btree.c +++ b/fs/xfs/libxfs/xfs_ialloc_btree.c @@ -694,6 +694,28 @@ 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. */ @@ -711,7 +733,11 @@ 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; |