1 files changed, 18 insertions, 0 deletions

diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index fd85e4c05c6b..438278041d80 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -72,6 +72,7 @@ enum {
  * @ns_cptree: rb-tree of all mounted checkpoints (nilfs_root)
  * @ns_cptree_lock: lock protecting @ns_cptree
  * @ns_gc_inodes: dummy inodes to keep live blocks
+ * @ns_mount_opt: mount options
  * @ns_blocksize_bits: bit length of block size
  * @ns_blocksize: block size
  * @ns_nsegments: number of segments in filesystem
@@ -148,6 +149,9 @@ struct the_nilfs {
         /* GC inode list */
         struct list_head        ns_gc_inodes;
 
+        /* Mount options */
+        unsigned long           ns_mount_opt;
+
         /* Disk layout information (static) */
         unsigned int            ns_blocksize_bits;
         unsigned int            ns_blocksize;
@@ -180,6 +184,20 @@ THE_NILFS_FNS(DISCONTINUED, discontinued)
 THE_NILFS_FNS(GC_RUNNING, gc_running)
 THE_NILFS_FNS(SB_DIRTY, sb_dirty)
 
+/*
+ * Mount option operations
+ */
+#define nilfs_clear_opt(nilfs, opt)  \
+        do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)
+#define nilfs_set_opt(nilfs, opt)  \
+        do { (nilfs)->ns_mount_opt |= NILFS_MOUNT_##opt; } while (0)
+#define nilfs_test_opt(nilfs, opt) ((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt)
+#define nilfs_write_opt(nilfs, mask, opt)                               \
+        do { (nilfs)->ns_mount_opt =                                    \
+                (((nilfs)->ns_mount_opt & ~NILFS_MOUNT_##mask) |        \
+                 NILFS_MOUNT_##opt);                                    \
+        } while (0)
+
 /**
  * struct nilfs_root - nilfs root object
  * @cno: checkpoint number