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authorDave Chinner <dchinner@redhat.com>2021-08-19 04:46:26 +0300
committerDarrick J. Wong <djwong@kernel.org>2021-08-19 20:07:12 +0300
commita1d86e8dec8c1325d301c9d5594bb794bc428fc3 (patch)
treef71195aebaf5b4b76ff5cc534c0e393579ae9d80 /fs/xfs/xfs_mount.c
parente23b55d537c9be60ae918fa6c3be0d699986f346 (diff)
downloadlinux-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/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 66dbc910d1e4..ff53b3f2bf50 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -225,6 +225,7 @@ reread:
goto reread;
}
+ mp->m_features |= xfs_sb_version_to_features(sbp);
xfs_reinit_percpu_counters(mp);
/* no need to be quiet anymore, so reset the buf ops */