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| author |   Darrick J. Wong <djwong@kernel.org> | 2021-08-08 08:27:12 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-08-09 15:57:59 -0700 |
| commit | 908ce71e54f8265fa909200410d6c50ab9a2d302 (patch) | |
| tree | 25fc6e2aaa54d7d2367e73d4dd362ac692734fa6 /fs/xfs/libxfs | |
| parent | xfs: replace kmem_alloc_large() with kvmalloc() (diff) | |
| download | linux-dev-908ce71e54f8265fa909200410d6c50ab9a2d302.tar.xz linux-dev-908ce71e54f8265fa909200410d6c50ab9a2d302.zip | |
xfs: allow setting and clearing of log incompat feature flags
Log incompat feature flags in the superblock exist for one purpose: to
protect the contents of a dirty log from replay on a kernel that isn't
prepared to handle those dirty contents. This means that they can be
cleared if (a) we know the log is clean and (b) we know that there
aren't any other threads in the system that might be setting or relying
upon a log incompat flag.
Therefore, clear the log incompat flags when we've finished recovering
the log, when we're unmounting cleanly, remounting read-only, or
freezing; and provide a function so that subsequent patches can start
using this.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Diffstat (limited to 'fs/xfs/libxfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_format.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 37570cf0537e..5d8a129150d5 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -495,6 +495,21 @@ xfs_sb_has_incompat_log_feature( return (sbp->sb_features_log_incompat & feature) != 0; } +static inline void +xfs_sb_remove_incompat_log_features( + struct xfs_sb *sbp) +{ + sbp->sb_features_log_incompat &= ~XFS_SB_FEAT_INCOMPAT_LOG_ALL; +} + +static inline void +xfs_sb_add_incompat_log_features( + struct xfs_sb *sbp, + unsigned int features) +{ + sbp->sb_features_log_incompat |= features; +} + /* * V5 superblock specific feature checks */ |