Add xfs_is_ilocked(), xfs_is_iolocked() and xfs_is_mmaplocked()
Signed-off-by: Pavel Reichl <preichl@xxxxxxxxxx>
Suggested-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
fs/xfs/xfs_inode.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++
fs/xfs/xfs_inode.h | 3 +++
2 files changed, 56 insertions(+)
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index c5077e6326c7..80874c80df6d 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -372,6 +372,59 @@ xfs_isilocked(
ASSERT(0);
return 0;
}
+
+static inline bool
+__xfs_is_ilocked(
+ struct rw_semaphore *rwsem,
+ bool shared,
+ bool excl)
+{
+ bool locked = false;
+
+ if (!rwsem_is_locked(rwsem))
+ return false;
+
+ if (!debug_locks)
+ return true;
+
+ if (shared)
+ locked = lockdep_is_held_type(rwsem, 0);
+
+ if (excl)
+ locked |= lockdep_is_held_type(rwsem, 1);
+
+ return locked;
+}
+
+bool
+xfs_is_ilocked(
+ struct xfs_inode *ip,
+ int lock_flags)
+{
+ return __xfs_is_ilocked(&ip->i_lock.mr_lock,
+ (lock_flags & XFS_ILOCK_SHARED),
+ (lock_flags & XFS_ILOCK_EXCL));
+}
+
+bool
+xfs_is_mmaplocked(
+ struct xfs_inode *ip,
+ int lock_flags)
+{
+ return __xfs_is_ilocked(&ip->i_mmaplock.mr_lock,
+ (lock_flags & XFS_MMAPLOCK_SHARED),
+ (lock_flags & XFS_MMAPLOCK_EXCL));
+}
+
+bool
+xfs_is_iolocked(
+ struct xfs_inode *ip,
+ int lock_flags)
+{
+ return __xfs_is_ilocked(&VFS_I(ip)->i_rwsem,
+ (lock_flags & XFS_IOLOCK_SHARED),
+ (lock_flags & XFS_IOLOCK_EXCL));
+}
#endif
/*
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 492e53992fa9..6ba575f35c1f 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -417,6 +417,9 @@ int xfs_ilock_nowait(xfs_inode_t *, uint);
void xfs_iunlock(xfs_inode_t *, uint);
void xfs_ilock_demote(xfs_inode_t *, uint);
int xfs_isilocked(xfs_inode_t *, uint);
+bool xfs_is_ilocked(struct xfs_inode *, int);
+bool xfs_is_mmaplocked(struct xfs_inode *, int);
+bool xfs_is_iolocked(struct xfs_inode *, int);
uint xfs_ilock_data_map_shared(struct xfs_inode *);
uint xfs_ilock_attr_map_shared(struct xfs_inode *);
--
2.24.1
