struct xlog;
struct xlog_ticket;
struct xfs_mount;
+struct xfs_log_callback;
/*
- * Macros, structures, prototypes for internal log manager use.
+ * Flags for log structure
*/
-
-#define XLOG_MIN_ICLOGS 2
-#define XLOG_MAX_ICLOGS 8
-#define XLOG_HEADER_MAGIC_NUM 0xFEEDbabe /* Invalid cycle number */
-#define XLOG_VERSION_1 1
-#define XLOG_VERSION_2 2 /* Large IClogs, Log sunit */
-#define XLOG_VERSION_OKBITS (XLOG_VERSION_1 | XLOG_VERSION_2)
-#define XLOG_MIN_RECORD_BSIZE (16*1024) /* eventually 32k */
-#define XLOG_BIG_RECORD_BSIZE (32*1024) /* 32k buffers */
-#define XLOG_MAX_RECORD_BSIZE (256*1024)
-#define XLOG_HEADER_CYCLE_SIZE (32*1024) /* cycle data in header */
-#define XLOG_MIN_RECORD_BSHIFT 14 /* 16384 == 1 << 14 */
-#define XLOG_BIG_RECORD_BSHIFT 15 /* 32k == 1 << 15 */
-#define XLOG_MAX_RECORD_BSHIFT 18 /* 256k == 1 << 18 */
-#define XLOG_BTOLSUNIT(log, b) (((b)+(log)->l_mp->m_sb.sb_logsunit-1) / \
- (log)->l_mp->m_sb.sb_logsunit)
-#define XLOG_LSUNITTOB(log, su) ((su) * (log)->l_mp->m_sb.sb_logsunit)
-
-#define XLOG_HEADER_SIZE 512
-
-#define XLOG_REC_SHIFT(log) \
- BTOBB(1 << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
- XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
-#define XLOG_TOTAL_REC_SHIFT(log) \
- BTOBB(XLOG_MAX_ICLOGS << (xfs_sb_version_haslogv2(&log->l_mp->m_sb) ? \
- XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT))
-
-static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block)
-{
- return ((xfs_lsn_t)cycle << 32) | block;
-}
-
-static inline uint xlog_get_cycle(char *ptr)
-{
- if (be32_to_cpu(*(__be32 *)ptr) == XLOG_HEADER_MAGIC_NUM)
- return be32_to_cpu(*((__be32 *)ptr + 1));
- else
- return be32_to_cpu(*(__be32 *)ptr);
-}
-
-#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1)
-
-#ifdef __KERNEL__
+#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */
+#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */
+#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being
+ shutdown */
+#define XLOG_TAIL_WARN 0x10 /* log tail verify warning issued */
/*
* get client id from packed copy.
#define XLOG_STATE_IOERROR 0x0080 /* IO error happened in sync'ing log */
#define XLOG_STATE_ALL 0x7FFF /* All possible valid flags */
#define XLOG_STATE_NOTUSED 0x8000 /* This IC log not being used */
-#endif /* __KERNEL__ */
-/*
- * Flags to log operation header
- *
- * The first write of a new transaction will be preceded with a start
- * record, XLOG_START_TRANS. Once a transaction is committed, a commit
- * record is written, XLOG_COMMIT_TRANS. If a single region can not fit into
- * the remainder of the current active in-core log, it is split up into
- * multiple regions. Each partial region will be marked with a
- * XLOG_CONTINUE_TRANS until the last one, which gets marked with XLOG_END_TRANS.
- *
- */
-#define XLOG_START_TRANS 0x01 /* Start a new transaction */
-#define XLOG_COMMIT_TRANS 0x02 /* Commit this transaction */
-#define XLOG_CONTINUE_TRANS 0x04 /* Cont this trans into new region */
-#define XLOG_WAS_CONT_TRANS 0x08 /* Cont this trans into new region */
-#define XLOG_END_TRANS 0x10 /* End a continued transaction */
-#define XLOG_UNMOUNT_TRANS 0x20 /* Unmount a filesystem transaction */
-
-#ifdef __KERNEL__
/*
* Flags to log ticket
*/
{ XLOG_TIC_INITED, "XLOG_TIC_INITED" }, \
{ XLOG_TIC_PERM_RESERV, "XLOG_TIC_PERM_RESERV" }
-#endif /* __KERNEL__ */
-
-#define XLOG_UNMOUNT_TYPE 0x556e /* Un for Unmount */
-
-/*
- * Flags for log structure
- */
-#define XLOG_ACTIVE_RECOVERY 0x2 /* in the middle of recovery */
-#define XLOG_RECOVERY_NEEDED 0x4 /* log was recovered */
-#define XLOG_IO_ERROR 0x8 /* log hit an I/O error, and being
- shutdown */
-#define XLOG_TAIL_WARN 0x10 /* log tail verify warning issued */
-
-typedef __uint32_t xlog_tid_t;
-
-#ifdef __KERNEL__
/*
* Below are states for covering allocation transactions.
* By covering, we mean changing the h_tail_lsn in the last on-disk
#define XLOG_COVER_OPS 5
-
/* Ticket reservation region accounting */
#define XLOG_TIC_LEN_MAX 15
xlog_res_t t_res_arr[XLOG_TIC_LEN_MAX]; /* array of res : 8 * 15 */
} xlog_ticket_t;
-#endif
-
-
-typedef struct xlog_op_header {
- __be32 oh_tid; /* transaction id of operation : 4 b */
- __be32 oh_len; /* bytes in data region : 4 b */
- __u8 oh_clientid; /* who sent me this : 1 b */
- __u8 oh_flags; /* : 1 b */
- __u16 oh_res2; /* 32 bit align : 2 b */
-} xlog_op_header_t;
-
-
-/* valid values for h_fmt */
-#define XLOG_FMT_UNKNOWN 0
-#define XLOG_FMT_LINUX_LE 1
-#define XLOG_FMT_LINUX_BE 2
-#define XLOG_FMT_IRIX_BE 3
-
-/* our fmt */
-#ifdef XFS_NATIVE_HOST
-#define XLOG_FMT XLOG_FMT_LINUX_BE
-#else
-#define XLOG_FMT XLOG_FMT_LINUX_LE
-#endif
-
-typedef struct xlog_rec_header {
- __be32 h_magicno; /* log record (LR) identifier : 4 */
- __be32 h_cycle; /* write cycle of log : 4 */
- __be32 h_version; /* LR version : 4 */
- __be32 h_len; /* len in bytes; should be 64-bit aligned: 4 */
- __be64 h_lsn; /* lsn of this LR : 8 */
- __be64 h_tail_lsn; /* lsn of 1st LR w/ buffers not committed: 8 */
- __le32 h_crc; /* crc of log record : 4 */
- __be32 h_prev_block; /* block number to previous LR : 4 */
- __be32 h_num_logops; /* number of log operations in this LR : 4 */
- __be32 h_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE];
- /* new fields */
- __be32 h_fmt; /* format of log record : 4 */
- uuid_t h_fs_uuid; /* uuid of FS : 16 */
- __be32 h_size; /* iclog size : 4 */
-} xlog_rec_header_t;
-
-typedef struct xlog_rec_ext_header {
- __be32 xh_cycle; /* write cycle of log : 4 */
- __be32 xh_cycle_data[XLOG_HEADER_CYCLE_SIZE / BBSIZE]; /* : 256 */
-} xlog_rec_ext_header_t;
-
-#ifdef __KERNEL__
-
-/*
- * Quite misnamed, because this union lays out the actual on-disk log buffer.
- */
-typedef union xlog_in_core2 {
- xlog_rec_header_t hic_header;
- xlog_rec_ext_header_t hic_xheader;
- char hic_sector[XLOG_HEADER_SIZE];
-} xlog_in_core_2_t;
-
/*
* - A log record header is 512 bytes. There is plenty of room to grow the
* xlog_rec_header_t into the reserved space.
/* Callback structures need their own cacheline */
spinlock_t ic_callback_lock ____cacheline_aligned_in_smp;
- xfs_log_callback_t *ic_callback;
- xfs_log_callback_t **ic_callback_tail;
+ struct xfs_log_callback *ic_callback;
+ struct xfs_log_callback **ic_callback_tail;
/* reference counts need their own cacheline */
atomic_t ic_refcnt ____cacheline_aligned_in_smp;
int space_used; /* aggregate size of regions */
struct list_head busy_extents; /* busy extents in chkpt */
struct xfs_log_vec *lv_chain; /* logvecs being pushed */
- xfs_log_callback_t log_cb; /* completion callback hook. */
+ struct xfs_log_callback log_cb; /* completion callback hook. */
struct list_head committing; /* ctx committing list */
};
struct xlog *xc_log;
struct list_head xc_cil;
spinlock_t xc_cil_lock;
+
+ struct rw_semaphore xc_ctx_lock ____cacheline_aligned_in_smp;
struct xfs_cil_ctx *xc_ctx;
- struct rw_semaphore xc_ctx_lock;
+
+ spinlock_t xc_push_lock ____cacheline_aligned_in_smp;
+ xfs_lsn_t xc_push_seq;
struct list_head xc_committing;
wait_queue_head_t xc_commit_wait;
xfs_lsn_t xc_current_sequence;
struct work_struct xc_push_work;
- xfs_lsn_t xc_push_seq;
-};
+} ____cacheline_aligned_in_smp;
/*
* The amount of log space we allow the CIL to aggregate is difficult to size.
/*
* Committed Item List interfaces
*/
-int
-xlog_cil_init(struct xlog *log);
-void
-xlog_cil_init_post_recovery(struct xlog *log);
-void
-xlog_cil_destroy(struct xlog *log);
+int xlog_cil_init(struct xlog *log);
+void xlog_cil_init_post_recovery(struct xlog *log);
+void xlog_cil_destroy(struct xlog *log);
+bool xlog_cil_empty(struct xlog *log);
/*
* CIL force routines
schedule();
remove_wait_queue(wq, &wait);
}
-#endif /* __KERNEL__ */
#endif /* __XFS_LOG_PRIV_H__ */
projects / deliverable / linux.git / blobdiff