soc: rockchip: add virtual poweroff support

[firefly-linux-kernel-4.4.55.git] / include / linux / nilfs2_fs.h

diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index 1108acaacfc62abb35590d3e9c2c92820c49e326..9abb763e4b863e81aedcd34b868a597b3aaf3567 100644 (file)
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -82,6 +82,8 @@ struct nilfs_inode {
        __le32  i_pad;
 };
 
+#define NILFS_MIN_INODE_SIZE           128
+
 /**
  * struct nilfs_super_root - structure of super root
  * @sr_sum: check sum
@@ -482,6 +484,8 @@ struct nilfs_dat_entry {
        __le64 de_rsv;
 };
 
+#define NILFS_MIN_DAT_ENTRY_SIZE       32
+
 /**
  * struct nilfs_snapshot_list - snapshot list
  * @ssl_next: next checkpoint number on snapshot list
@@ -520,6 +524,8 @@ struct nilfs_checkpoint {
        struct nilfs_inode cp_ifile_inode;
 };
 
+#define NILFS_MIN_CHECKPOINT_SIZE      (64 + NILFS_MIN_INODE_SIZE)
+
 /* checkpoint flags */
 enum {
        NILFS_CHECKPOINT_SNAPSHOT,
@@ -615,6 +621,8 @@ struct nilfs_segment_usage {
        __le32 su_flags;
 };
 
+#define NILFS_MIN_SEGMENT_USAGE_SIZE   16
+
 /* segment usage flag */
 enum {
        NILFS_SEGMENT_USAGE_ACTIVE,
@@ -710,6 +718,48 @@ static inline int nilfs_suinfo_clean(const struct nilfs_suinfo *si)
 }
 
 /* ioctl */
+/**
+ * nilfs_suinfo_update - segment usage information update
+ * @sup_segnum: segment number
+ * @sup_flags: flags for which fields are active in sup_sui
+ * @sup_reserved: reserved necessary for alignment
+ * @sup_sui: segment usage information
+ */
+struct nilfs_suinfo_update {
+       __u64 sup_segnum;
+       __u32 sup_flags;
+       __u32 sup_reserved;
+       struct nilfs_suinfo sup_sui;
+};
+
+enum {
+       NILFS_SUINFO_UPDATE_LASTMOD,
+       NILFS_SUINFO_UPDATE_NBLOCKS,
+       NILFS_SUINFO_UPDATE_FLAGS,
+       __NR_NILFS_SUINFO_UPDATE_FIELDS,
+};
+
+#define NILFS_SUINFO_UPDATE_FNS(flag, name)                            \
+static inline void                                                     \
+nilfs_suinfo_update_set_##name(struct nilfs_suinfo_update *sup)                \
+{                                                                      \
+       sup->sup_flags |= 1UL << NILFS_SUINFO_UPDATE_##flag;            \
+}                                                                      \
+static inline void                                                     \
+nilfs_suinfo_update_clear_##name(struct nilfs_suinfo_update *sup)      \
+{                                                                      \
+       sup->sup_flags &= ~(1UL << NILFS_SUINFO_UPDATE_##flag);         \
+}                                                                      \
+static inline int                                                      \
+nilfs_suinfo_update_##name(const struct nilfs_suinfo_update *sup)      \
+{                                                                      \
+       return !!(sup->sup_flags & (1UL << NILFS_SUINFO_UPDATE_##flag));\
+}
+
+NILFS_SUINFO_UPDATE_FNS(LASTMOD, lastmod)
+NILFS_SUINFO_UPDATE_FNS(NBLOCKS, nblocks)
+NILFS_SUINFO_UPDATE_FNS(FLAGS, flags)
+
 enum {
        NILFS_CHECKPOINT,
        NILFS_SNAPSHOT,
@@ -863,5 +913,7 @@ struct nilfs_bdesc {
        _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64)
 #define NILFS_IOCTL_SET_ALLOC_RANGE  \
        _IOW(NILFS_IOCTL_IDENT, 0x8C, __u64[2])
+#define NILFS_IOCTL_SET_SUINFO  \
+       _IOW(NILFS_IOCTL_IDENT, 0x8D, struct nilfs_argv)
 
 #endif /* _LINUX_NILFS_FS_H */