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| author | Darrick J. Wong <djwong@kernel.org> | 2023-10-16 18:40:11 +0200 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2023-10-18 01:26:25 +0200 |
| commit | ef5a83b7e597038d1c734ddb4bc00638082c2bf1 (patch) | |
| tree | 9b5aa12266f11b3748c81079e004f6d5ecfc4640 /fs/xfs/xfs_trans.c | |
| parent | xfs: create rt extent rounding helpers for realtime extent blocks (diff) | |
| download | linux-ef5a83b7e597038d1c734ddb4bc00638082c2bf1.tar.xz linux-ef5a83b7e597038d1c734ddb4bc00638082c2bf1.zip | |
xfs: use shifting and masking when converting rt extents, if possible
Avoid the costs of integer division (32-bit and 64-bit) if the realtime
extent size is a power of two.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_trans.c')
| -rw-r--r-- | fs/xfs/xfs_trans.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 338dd3774507..305c9d07bf1b 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -656,6 +656,10 @@ xfs_trans_unreserve_and_mod_sb( mp->m_sb.sb_agcount += tp->t_agcount_delta; mp->m_sb.sb_imax_pct += tp->t_imaxpct_delta; mp->m_sb.sb_rextsize += tp->t_rextsize_delta; + if (tp->t_rextsize_delta) { + mp->m_rtxblklog = log2_if_power2(mp->m_sb.sb_rextsize); + mp->m_rtxblkmask = mask64_if_power2(mp->m_sb.sb_rextsize); + } mp->m_sb.sb_rbmblocks += tp->t_rbmblocks_delta; mp->m_sb.sb_rblocks += tp->t_rblocks_delta; mp->m_sb.sb_rextents += tp->t_rextents_delta; |