diff options
| author | Dave Chinner <dchinner@redhat.com> | 2021-08-19 04:46:26 +0300 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-08-19 20:07:12 +0300 |
| commit | a1d86e8dec8c1325d301c9d5594bb794bc428fc3 (patch) | |
| tree | f71195aebaf5b4b76ff5cc534c0e393579ae9d80 /fs/xfs/libxfs/xfs_sb.c | |
| parent | e23b55d537c9be60ae918fa6c3be0d699986f346 (diff) | |
| download | linux-a1d86e8dec8c1325d301c9d5594bb794bc428fc3.tar.xz | |
xfs: reflect sb features in xfs_mount
Currently on-disk feature checks require decoding the superblock
fileds and so can be non-trivial. We have almost 400 hundred
individual feature checks in the XFS code, so this is a significant
amount of code. To reduce runtime check overhead, pre-process all
the version flags into a features field in the xfs_mount at mount
time so we can convert all the feature checks to a simple flag
check.
There is also a need to convert the dynamic feature flags to update
the m_features field. This is required for attr, attr2 and quota
features. New xfs_mount based wrappers are added for this.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Diffstat (limited to 'fs/xfs/libxfs/xfs_sb.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_sb.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 4a4586bd2ba2..f9af5f1c9ffc 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -30,6 +30,72 @@ * Physical superblock buffer manipulations. Shared with libxfs in userspace. */ +uint64_t +xfs_sb_version_to_features( + struct xfs_sb *sbp) +{ + uint64_t features = 0; + + /* optional V4 features */ + if (sbp->sb_rblocks > 0) + features |= XFS_FEAT_REALTIME; + if (sbp->sb_versionnum & XFS_SB_VERSION_ATTRBIT) + features |= XFS_FEAT_ATTR; + if (sbp->sb_versionnum & XFS_SB_VERSION_QUOTABIT) + features |= XFS_FEAT_QUOTA; + if (sbp->sb_versionnum & XFS_SB_VERSION_ALIGNBIT) + features |= XFS_FEAT_ALIGN; + if (sbp->sb_versionnum & XFS_SB_VERSION_LOGV2BIT) + features |= XFS_FEAT_LOGV2; + if (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT) + features |= XFS_FEAT_DALIGN; + if (sbp->sb_versionnum & XFS_SB_VERSION_EXTFLGBIT) + features |= XFS_FEAT_EXTFLG; + if (sbp->sb_versionnum & XFS_SB_VERSION_SECTORBIT) + features |= XFS_FEAT_SECTOR; + if (sbp->sb_versionnum & XFS_SB_VERSION_BORGBIT) + features |= XFS_FEAT_ASCIICI; + if (sbp->sb_versionnum & XFS_SB_VERSION_MOREBITSBIT) { + if (sbp->sb_features2 & XFS_SB_VERSION2_LAZYSBCOUNTBIT) + features |= XFS_FEAT_LAZYSBCOUNT; + if (sbp->sb_features2 & XFS_SB_VERSION2_ATTR2BIT) + features |= XFS_FEAT_ATTR2; + if (sbp->sb_features2 & XFS_SB_VERSION2_PROJID32BIT) + features |= XFS_FEAT_PROJID32; + if (sbp->sb_features2 & XFS_SB_VERSION2_FTYPE) + features |= XFS_FEAT_FTYPE; + } + + if (XFS_SB_VERSION_NUM(sbp) != XFS_SB_VERSION_5) + return features; + + /* Always on V5 features */ + features |= XFS_FEAT_ALIGN | XFS_FEAT_LOGV2 | XFS_FEAT_EXTFLG | + XFS_FEAT_LAZYSBCOUNT | XFS_FEAT_ATTR2 | XFS_FEAT_PROJID32 | + XFS_FEAT_V3INODES | XFS_FEAT_CRC | XFS_FEAT_PQUOTINO; + + /* Optional V5 features */ + if (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FINOBT) + features |= XFS_FEAT_FINOBT; + if (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_RMAPBT) + features |= XFS_FEAT_RMAPBT; + if (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_REFLINK) + features |= XFS_FEAT_REFLINK; + if (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_INOBTCNT) + features |= XFS_FEAT_INOBTCNT; + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_FTYPE) + features |= XFS_FEAT_FTYPE; + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_SPINODES) + features |= XFS_FEAT_SPINODES; + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_META_UUID) + features |= XFS_FEAT_META_UUID; + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_BIGTIME) + features |= XFS_FEAT_BIGTIME; + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR) + features |= XFS_FEAT_NEEDSREPAIR; + return features; +} + /* Check all the superblock fields we care about when reading one in. */ STATIC int xfs_validate_sb_read( |