[XFS] Create xfs_iflags_test_and_clear helper function
SGI-PV: 969608
SGI-Modid: xfs-linux-melb:xfs-kern:29496a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 79d7246..ea1e24e 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -360,6 +360,19 @@
spin_unlock(&ip->i_flags_lock);
return ret;
}
+
+static inline int
+xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
+{
+ int ret;
+
+ spin_lock(&ip->i_flags_lock);
+ ret = ip->i_flags & flags;
+ if (ret)
+ ip->i_flags &= ~flags;
+ spin_unlock(&ip->i_flags_lock);
+ return ret;
+}
#endif /* __KERNEL__ */