diff options
Diffstat (limited to 'fs/btrfs/delayed-inode.h')
| -rw-r--r-- | fs/btrfs/delayed-inode.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h index e6e763ad2d42..0d949edc0caf 100644 --- a/fs/btrfs/delayed-inode.h +++ b/fs/btrfs/delayed-inode.h @@ -16,6 +16,7 @@ #include <linux/fs.h> #include <linux/atomic.h> #include <linux/refcount.h> +#include <linux/ref_tracker.h> #include "ctree.h" struct btrfs_disk_key; @@ -44,6 +45,22 @@ struct btrfs_delayed_root { wait_queue_head_t wait; }; +struct btrfs_ref_tracker_dir { +#ifdef CONFIG_BTRFS_DEBUG + struct ref_tracker_dir dir; +#else + struct {} tracker; +#endif +}; + +struct btrfs_ref_tracker { +#ifdef CONFIG_BTRFS_DEBUG + struct ref_tracker *tracker; +#else + struct {} tracker; +#endif +}; + #define BTRFS_DELAYED_NODE_IN_LIST 0 #define BTRFS_DELAYED_NODE_INODE_DIRTY 1 #define BTRFS_DELAYED_NODE_DEL_IREF 2 @@ -78,6 +95,12 @@ struct btrfs_delayed_node { * actual number of leaves we end up using. Protected by @mutex. */ u32 index_item_leaves; + /* Track all references to this delayed node. */ + struct btrfs_ref_tracker_dir ref_dir; + /* Track delayed node reference stored in node list. */ + struct btrfs_ref_tracker node_list_tracker; + /* Track delayed node reference stored in inode cache. */ + struct btrfs_ref_tracker inode_cache_tracker; }; struct btrfs_delayed_item { @@ -169,4 +192,74 @@ void __cold btrfs_delayed_inode_exit(void); /* for debugging */ void btrfs_assert_delayed_root_empty(struct btrfs_fs_info *fs_info); +#define BTRFS_DELAYED_NODE_REF_TRACKER_QUARANTINE_COUNT 16 +#define BTRFS_DELAYED_NODE_REF_TRACKER_DISPLAY_LIMIT 16 + +#ifdef CONFIG_BTRFS_DEBUG +static inline void btrfs_delayed_node_ref_tracker_dir_init(struct btrfs_delayed_node *node) +{ + if (!btrfs_test_opt(node->root->fs_info, REF_TRACKER)) + return; + + ref_tracker_dir_init(&node->ref_dir.dir, + BTRFS_DELAYED_NODE_REF_TRACKER_QUARANTINE_COUNT, + "delayed_node"); +} + +static inline void btrfs_delayed_node_ref_tracker_dir_exit(struct btrfs_delayed_node *node) +{ + if (!btrfs_test_opt(node->root->fs_info, REF_TRACKER)) + return; + + ref_tracker_dir_exit(&node->ref_dir.dir); +} + +static inline void btrfs_delayed_node_ref_tracker_dir_print(struct btrfs_delayed_node *node) +{ + if (!btrfs_test_opt(node->root->fs_info, REF_TRACKER)) + return; + + ref_tracker_dir_print(&node->ref_dir.dir, + BTRFS_DELAYED_NODE_REF_TRACKER_DISPLAY_LIMIT); +} + +static inline int btrfs_delayed_node_ref_tracker_alloc(struct btrfs_delayed_node *node, + struct btrfs_ref_tracker *tracker, + gfp_t gfp) +{ + if (!btrfs_test_opt(node->root->fs_info, REF_TRACKER)) + return 0; + + return ref_tracker_alloc(&node->ref_dir.dir, &tracker->tracker, gfp); +} + +static inline int btrfs_delayed_node_ref_tracker_free(struct btrfs_delayed_node *node, + struct btrfs_ref_tracker *tracker) +{ + if (!btrfs_test_opt(node->root->fs_info, REF_TRACKER)) + return 0; + + return ref_tracker_free(&node->ref_dir.dir, &tracker->tracker); +} +#else +static inline void btrfs_delayed_node_ref_tracker_dir_init(struct btrfs_delayed_node *node) { } + +static inline void btrfs_delayed_node_ref_tracker_dir_exit(struct btrfs_delayed_node *node) { } + +static inline void btrfs_delayed_node_ref_tracker_dir_print(struct btrfs_delayed_node *node) { } + +static inline int btrfs_delayed_node_ref_tracker_alloc(struct btrfs_delayed_node *node, + struct btrfs_ref_tracker *tracker, + gfp_t gfp) +{ + return 0; +} + +static inline int btrfs_delayed_node_ref_tracker_free(struct btrfs_delayed_node *node, + struct btrfs_ref_tracker *tracker) +{ + return 0; +} +#endif + #endif |