This adds the palloc cache to DAT file. The palloc cache is allocated
on the extended region of nilfs_mdt_info struct. The struct
nilfs_dat_info defines the extended on memory structure of DAT.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
#define NILFS_CNO_MIN ((__u64)1)
#define NILFS_CNO_MAX (~(__u64)0)
#define NILFS_CNO_MIN ((__u64)1)
#define NILFS_CNO_MAX (~(__u64)0)
+struct nilfs_dat_info {
+ struct nilfs_mdt_info mi;
+ struct nilfs_palloc_cache palloc_cache;
+};
+
+static inline struct nilfs_dat_info *NILFS_DAT_I(struct inode *dat)
+{
+ return (struct nilfs_dat_info *)NILFS_MDT(dat);
+}
+
static int nilfs_dat_prepare_entry(struct inode *dat,
struct nilfs_palloc_req *req, int create)
{
static int nilfs_dat_prepare_entry(struct inode *dat,
struct nilfs_palloc_req *req, int create)
{
{
static struct lock_class_key dat_lock_key;
struct inode *dat;
{
static struct lock_class_key dat_lock_key;
struct inode *dat;
+ struct nilfs_dat_info *di;
- dat = nilfs_mdt_new(nilfs, NULL, NILFS_DAT_INO, 0);
+ dat = nilfs_mdt_new(nilfs, NULL, NILFS_DAT_INO, sizeof(*di));
if (dat) {
err = nilfs_palloc_init_blockgroup(dat, entry_size);
if (unlikely(err)) {
nilfs_mdt_destroy(dat);
return NULL;
}
if (dat) {
err = nilfs_palloc_init_blockgroup(dat, entry_size);
if (unlikely(err)) {
nilfs_mdt_destroy(dat);
return NULL;
}
- lockdep_set_class(&NILFS_MDT(dat)->mi_sem, &dat_lock_key);
+
+ di = NILFS_DAT_I(dat);
+ lockdep_set_class(&di->mi.mi_sem, &dat_lock_key);
+ nilfs_palloc_setup_cache(dat, &di->palloc_cache);