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| author |   Dave Chinner <dchinner@redhat.com> | 2015-08-20 09:27:49 +1000 |
|---|---|---|
| committer |   Dave Chinner <david@fromorbit.com> | 2015-08-20 09:27:49 +1000 |
| commit | 3403ccc0c9f069c40ea751a93ac6746f5ef2116a (patch) | |
| tree | 0fc897b2db02e43143b46c34db01c1ef2bc2da0a /fs/xfs | |
| parent | xfs: flush entire file on dio read/write to cached file (diff) | |
| download | linux-dev-3403ccc0c9f069c40ea751a93ac6746f5ef2116a.tar.xz linux-dev-3403ccc0c9f069c40ea751a93ac6746f5ef2116a.zip | |
xfs: inode lockdep annotations broke non-lockdep build
Fix CONFIG_LOCKDEP=n build, because asserts I put in to ensure we
aren't overrunning lockdep subclasses in commit 0952c81 ("xfs:
clean up inode lockdep annotations") use a define that doesn't
exist when CONFIG_LOCKDEP=n
Only check the subclass limits when lockdep is actually enabled.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_inode.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 65792660b043..aa00ccc0bd78 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -362,6 +362,17 @@ int xfs_lots_retries; int xfs_lock_delays; #endif +#ifdef CONFIG_LOCKDEP +static bool +xfs_lockdep_subclass_ok( + int subclass) +{ + return subclass < MAX_LOCKDEP_SUBCLASSES; +} +#else +#define xfs_lockdep_subclass_ok(subclass) (true) +#endif + /* * Bump the subclass so xfs_lock_inodes() acquires each lock with a different * value. This can be called for any type of inode lock combination, including @@ -375,11 +386,12 @@ xfs_lock_inumorder(int lock_mode, int subclass) ASSERT(!(lock_mode & (XFS_ILOCK_PARENT | XFS_ILOCK_RTBITMAP | XFS_ILOCK_RTSUM))); + ASSERT(xfs_lockdep_subclass_ok(subclass)); if (lock_mode & (XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL)) { ASSERT(subclass <= XFS_IOLOCK_MAX_SUBCLASS); - ASSERT(subclass + XFS_IOLOCK_PARENT_VAL < - MAX_LOCKDEP_SUBCLASSES); + ASSERT(xfs_lockdep_subclass_ok(subclass + + XFS_IOLOCK_PARENT_VAL)); class += subclass << XFS_IOLOCK_SHIFT; if (lock_mode & XFS_IOLOCK_PARENT) class += XFS_IOLOCK_PARENT_VAL << XFS_IOLOCK_SHIFT; |