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Diffstat (limited to 'fs/nilfs2/the_nilfs.h')
-rw-r--r--fs/nilfs2/the_nilfs.h20
1 files changed, 19 insertions, 1 deletions
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index de8cc53b4a5c..d01ead1bea9a 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -33,6 +33,7 @@
#include <linux/slab.h>
struct nilfs_sc_info;
+struct nilfs_sysfs_dev_subgroups;
/* the_nilfs struct */
enum {
@@ -54,6 +55,7 @@ enum {
* @ns_sbwcount: write count of super block
* @ns_sbsize: size of valid data in super block
* @ns_mount_state: file system state
+ * @ns_sb_update_freq: interval of periodical update of superblocks (in seconds)
* @ns_seg_seq: segment sequence counter
* @ns_segnum: index number of the latest full segment.
* @ns_nextnum: index number of the full segment index to be used next
@@ -95,6 +97,9 @@ enum {
* @ns_inode_size: size of on-disk inode
* @ns_first_ino: first not-special inode number
* @ns_crc_seed: seed value of CRC32 calculation
+ * @ns_dev_kobj: /sys/fs/<nilfs>/<device>
+ * @ns_dev_kobj_unregister: completion state
+ * @ns_dev_subgroups: <device> subgroups pointer
*/
struct the_nilfs {
unsigned long ns_flags;
@@ -114,6 +119,7 @@ struct the_nilfs {
unsigned ns_sbwcount;
unsigned ns_sbsize;
unsigned ns_mount_state;
+ unsigned ns_sb_update_freq;
/*
* Following fields are dedicated to a writable FS-instance.
@@ -188,6 +194,11 @@ struct the_nilfs {
int ns_inode_size;
int ns_first_ino;
u32 ns_crc_seed;
+
+ /* /sys/fs/<nilfs>/<device> */
+ struct kobject ns_dev_kobj;
+ struct completion ns_dev_kobj_unregister;
+ struct nilfs_sysfs_dev_subgroups *ns_dev_subgroups;
};
#define THE_NILFS_FNS(bit, name) \
@@ -232,6 +243,8 @@ THE_NILFS_FNS(SB_DIRTY, sb_dirty)
* @ifile: inode file
* @inodes_count: number of inodes
* @blocks_count: number of blocks
+ * @snapshot_kobj: /sys/fs/<nilfs>/<device>/mounted_snapshots/<snapshot>
+ * @snapshot_kobj_unregister: completion state for kernel object
*/
struct nilfs_root {
__u64 cno;
@@ -243,6 +256,10 @@ struct nilfs_root {
atomic64_t inodes_count;
atomic64_t blocks_count;
+
+ /* /sys/fs/<nilfs>/<device>/mounted_snapshots/<snapshot> */
+ struct kobject snapshot_kobj;
+ struct completion snapshot_kobj_unregister;
};
/* Special checkpoint number */
@@ -254,7 +271,8 @@ struct nilfs_root {
static inline int nilfs_sb_need_update(struct the_nilfs *nilfs)
{
u64 t = get_seconds();
- return t < nilfs->ns_sbwtime || t > nilfs->ns_sbwtime + NILFS_SB_FREQ;
+ return t < nilfs->ns_sbwtime ||
+ t > nilfs->ns_sbwtime + nilfs->ns_sb_update_freq;
}
static inline int nilfs_sb_will_flip(struct the_nilfs *nilfs)