summaryrefslogtreecommitdiff
path: root/fs/f2fs/node.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/f2fs/node.h')
-rw-r--r--fs/f2fs/node.h60
1 files changed, 40 insertions, 20 deletions
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index 8a116a407599..8d5e6e0dd840 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -39,10 +39,16 @@ struct node_info {
unsigned char version; /* version of the node */
};
+enum {
+ IS_CHECKPOINTED, /* is it checkpointed before? */
+ HAS_FSYNCED_INODE, /* is the inode fsynced before? */
+ HAS_LAST_FSYNC, /* has the latest node fsync mark? */
+ IS_DIRTY, /* this nat entry is dirty? */
+};
+
struct nat_entry {
struct list_head list; /* for clean or dirty nat list */
- bool checkpointed; /* whether it is checkpointed or not */
- bool fsync_done; /* whether the latest node has fsync mark */
+ unsigned char flag; /* for node information bits */
struct node_info ni; /* in-memory node information */
};
@@ -55,18 +61,32 @@ struct nat_entry {
#define nat_get_version(nat) (nat->ni.version)
#define nat_set_version(nat, v) (nat->ni.version = v)
-#define __set_nat_cache_dirty(nm_i, ne) \
- do { \
- ne->checkpointed = false; \
- list_move_tail(&ne->list, &nm_i->dirty_nat_entries); \
- } while (0)
-#define __clear_nat_cache_dirty(nm_i, ne) \
- do { \
- ne->checkpointed = true; \
- list_move_tail(&ne->list, &nm_i->nat_entries); \
- } while (0)
#define inc_node_version(version) (++version)
+static inline void set_nat_flag(struct nat_entry *ne,
+ unsigned int type, bool set)
+{
+ unsigned char mask = 0x01 << type;
+ if (set)
+ ne->flag |= mask;
+ else
+ ne->flag &= ~mask;
+}
+
+static inline bool get_nat_flag(struct nat_entry *ne, unsigned int type)
+{
+ unsigned char mask = 0x01 << type;
+ return ne->flag & mask;
+}
+
+static inline void nat_reset_flag(struct nat_entry *ne)
+{
+ /* these states can be set only after checkpoint was done */
+ set_nat_flag(ne, IS_CHECKPOINTED, true);
+ set_nat_flag(ne, HAS_FSYNCED_INODE, false);
+ set_nat_flag(ne, HAS_LAST_FSYNC, true);
+}
+
static inline void node_info_from_raw_nat(struct node_info *ni,
struct f2fs_nat_entry *raw_ne)
{
@@ -90,9 +110,9 @@ enum mem_type {
};
struct nat_entry_set {
- struct list_head set_list; /* link with all nat sets */
+ struct list_head set_list; /* link with other nat sets */
struct list_head entry_list; /* link with dirty nat entries */
- nid_t start_nid; /* start nid of nats in set */
+ nid_t set; /* set number*/
unsigned int entry_cnt; /* the # of nat entries in set */
};
@@ -110,18 +130,19 @@ struct free_nid {
int state; /* in use or not: NID_NEW or NID_ALLOC */
};
-static inline int next_free_nid(struct f2fs_sb_info *sbi, nid_t *nid)
+static inline void next_free_nid(struct f2fs_sb_info *sbi, nid_t *nid)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct free_nid *fnid;
- if (nm_i->fcnt <= 0)
- return -1;
spin_lock(&nm_i->free_nid_list_lock);
+ if (nm_i->fcnt <= 0) {
+ spin_unlock(&nm_i->free_nid_list_lock);
+ return;
+ }
fnid = list_entry(nm_i->free_nid_list.next, struct free_nid, list);
*nid = fnid->nid;
spin_unlock(&nm_i->free_nid_list_lock);
- return 0;
}
/*
@@ -197,8 +218,7 @@ static inline void copy_node_footer(struct page *dst, struct page *src)
static inline void fill_node_footer_blkaddr(struct page *page, block_t blkaddr)
{
- struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb);
- struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
+ struct f2fs_checkpoint *ckpt = F2FS_CKPT(F2FS_P_SB(page));
struct f2fs_node *rn = F2FS_NODE(page);
rn->footer.cp_ver = ckpt->checkpoint_ver;