aboutsummaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_log.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/xfs/xfs_log.h')
-rw-r--r--fs/xfs/xfs_log.h202
1 files changed, 103 insertions, 99 deletions
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index d0c9baa50b1..84e0deb95ab 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -18,15 +18,81 @@
#ifndef __XFS_LOG_H__
#define __XFS_LOG_H__
-/* get lsn fields */
+struct xfs_log_vec {
+ struct xfs_log_vec *lv_next; /* next lv in build list */
+ int lv_niovecs; /* number of iovecs in lv */
+ struct xfs_log_iovec *lv_iovecp; /* iovec array */
+ struct xfs_log_item *lv_item; /* owner */
+ char *lv_buf; /* formatted buffer */
+ int lv_bytes; /* accounted space in buffer */
+ int lv_buf_len; /* aligned size of buffer */
+ int lv_size; /* size of allocated lv */
+};
+
+#define XFS_LOG_VEC_ORDERED (-1)
+
+static inline void *
+xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
+ uint type)
+{
+ struct xfs_log_iovec *vec = *vecp;
+
+ if (vec) {
+ ASSERT(vec - lv->lv_iovecp < lv->lv_niovecs);
+ vec++;
+ } else {
+ vec = &lv->lv_iovecp[0];
+ }
+
+ vec->i_type = type;
+ vec->i_addr = lv->lv_buf + lv->lv_buf_len;
+
+ ASSERT(IS_ALIGNED((unsigned long)vec->i_addr, sizeof(uint64_t)));
+
+ *vecp = vec;
+ return vec->i_addr;
+}
+
+/*
+ * We need to make sure the next buffer is naturally aligned for the biggest
+ * basic data type we put into it. We already accounted for this padding when
+ * sizing the buffer.
+ *
+ * However, this padding does not get written into the log, and hence we have to
+ * track the space used by the log vectors separately to prevent log space hangs
+ * due to inaccurate accounting (i.e. a leak) of the used log space through the
+ * CIL context ticket.
+ */
+static inline void
+xlog_finish_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec *vec, int len)
+{
+ lv->lv_buf_len += round_up(len, sizeof(uint64_t));
+ lv->lv_bytes += len;
+ vec->i_len = len;
+}
-#define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
-#define BLOCK_LSN(lsn) ((uint)(lsn))
+static inline void *
+xlog_copy_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
+ uint type, void *data, int len)
+{
+ void *buf;
-/* this is used in a spot where we might otherwise double-endian-flip */
-#define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
+ buf = xlog_prepare_iovec(lv, vecp, type);
+ memcpy(buf, data, len);
+ xlog_finish_iovec(lv, *vecp, len);
+ return buf;
+}
+
+/*
+ * Structure used to pass callback function and the function's argument
+ * to the log manager.
+ */
+typedef struct xfs_log_callback {
+ struct xfs_log_callback *cb_next;
+ void (*cb_func)(void *, int);
+ void *cb_arg;
+} xfs_log_callback_t;
-#ifdef __KERNEL__
/*
* By comparing each component, we don't have to worry about extra
* endian issues in treating two 32 bit numbers as one 64 bit number
@@ -54,122 +120,58 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
#define XFS_LOG_REL_PERM_RESERV 0x1
/*
- * Flags to xfs_log_reserve()
- *
- * XFS_LOG_SLEEP: If space is not available, sleep (default)
- * XFS_LOG_NOSLEEP: If space is not available, return error
- * XFS_LOG_PERM_RESERV: Permanent reservation. When writes are
- * performed against this type of reservation, the reservation
- * is not decreased. Long running transactions should use this.
- */
-#define XFS_LOG_SLEEP 0x0
-#define XFS_LOG_NOSLEEP 0x1
-#define XFS_LOG_PERM_RESERV 0x2
-
-/*
* Flags to xfs_log_force()
*
* XFS_LOG_SYNC: Synchronous force in-core log to disk
- * XFS_LOG_FORCE: Start in-core log write now.
- * XFS_LOG_URGE: Start write within some window of time.
- *
- * Note: Either XFS_LOG_FORCE or XFS_LOG_URGE must be set.
*/
#define XFS_LOG_SYNC 0x1
-#define XFS_LOG_FORCE 0x2
-#define XFS_LOG_URGE 0x4
-
-#endif /* __KERNEL__ */
-
-
-/* Log Clients */
-#define XFS_TRANSACTION 0x69
-#define XFS_VOLUME 0x2
-#define XFS_LOG 0xaa
-
-
-/* Region types for iovec's i_type */
-#define XLOG_REG_TYPE_BFORMAT 1
-#define XLOG_REG_TYPE_BCHUNK 2
-#define XLOG_REG_TYPE_EFI_FORMAT 3
-#define XLOG_REG_TYPE_EFD_FORMAT 4
-#define XLOG_REG_TYPE_IFORMAT 5
-#define XLOG_REG_TYPE_ICORE 6
-#define XLOG_REG_TYPE_IEXT 7
-#define XLOG_REG_TYPE_IBROOT 8
-#define XLOG_REG_TYPE_ILOCAL 9
-#define XLOG_REG_TYPE_IATTR_EXT 10
-#define XLOG_REG_TYPE_IATTR_BROOT 11
-#define XLOG_REG_TYPE_IATTR_LOCAL 12
-#define XLOG_REG_TYPE_QFORMAT 13
-#define XLOG_REG_TYPE_DQUOT 14
-#define XLOG_REG_TYPE_QUOTAOFF 15
-#define XLOG_REG_TYPE_LRHEADER 16
-#define XLOG_REG_TYPE_UNMOUNT 17
-#define XLOG_REG_TYPE_COMMIT 18
-#define XLOG_REG_TYPE_TRANSHDR 19
-#define XLOG_REG_TYPE_MAX 19
-
-#define XLOG_VEC_SET_TYPE(vecp, t) ((vecp)->i_type = (t))
-
-typedef struct xfs_log_iovec {
- xfs_caddr_t i_addr; /* beginning address of region */
- int i_len; /* length in bytes of region */
- uint i_type; /* type of region */
-} xfs_log_iovec_t;
-
-typedef void* xfs_log_ticket_t;
-/*
- * Structure used to pass callback function and the function's argument
- * to the log manager.
- */
-typedef struct xfs_log_callback {
- struct xfs_log_callback *cb_next;
- void (*cb_func)(void *, int);
- void *cb_arg;
-} xfs_log_callback_t;
-
-
-#ifdef __KERNEL__
/* Log manager interfaces */
struct xfs_mount;
+struct xlog_in_core;
struct xlog_ticket;
+struct xfs_log_item;
+struct xfs_item_ops;
+struct xfs_trans;
+struct xfs_log_callback;
+
xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
- xfs_log_ticket_t ticket,
- void **iclog,
+ struct xlog_ticket *ticket,
+ struct xlog_in_core **iclog,
uint flags);
int _xfs_log_force(struct xfs_mount *mp,
- xfs_lsn_t lsn,
uint flags,
int *log_forced);
void xfs_log_force(struct xfs_mount *mp,
- xfs_lsn_t lsn,
uint flags);
+int _xfs_log_force_lsn(struct xfs_mount *mp,
+ xfs_lsn_t lsn,
+ uint flags,
+ int *log_forced);
+void xfs_log_force_lsn(struct xfs_mount *mp,
+ xfs_lsn_t lsn,
+ uint flags);
int xfs_log_mount(struct xfs_mount *mp,
struct xfs_buftarg *log_target,
xfs_daddr_t start_block,
int num_bblocks);
int xfs_log_mount_finish(struct xfs_mount *mp);
-void xfs_log_move_tail(struct xfs_mount *mp,
- xfs_lsn_t tail_lsn);
+xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
+xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
+void xfs_log_space_wake(struct xfs_mount *mp);
int xfs_log_notify(struct xfs_mount *mp,
- void *iclog,
- xfs_log_callback_t *callback_entry);
+ struct xlog_in_core *iclog,
+ struct xfs_log_callback *callback_entry);
int xfs_log_release_iclog(struct xfs_mount *mp,
- void *iclog_hndl);
+ struct xlog_in_core *iclog);
int xfs_log_reserve(struct xfs_mount *mp,
int length,
int count,
- xfs_log_ticket_t *ticket,
+ struct xlog_ticket **ticket,
__uint8_t clientid,
- uint flags,
+ bool permanent,
uint t_type);
-int xfs_log_write(struct xfs_mount *mp,
- xfs_log_iovec_t region[],
- int nentries,
- xfs_log_ticket_t ticket,
- xfs_lsn_t *start_lsn);
+int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
int xfs_log_unmount_write(struct xfs_mount *mp);
void xfs_log_unmount(struct xfs_mount *mp);
int xfs_log_force_umount(struct xfs_mount *mp, int logerror);
@@ -177,13 +179,15 @@ int xfs_log_need_covered(struct xfs_mount *mp);
void xlog_iodone(struct xfs_buf *);
-struct xlog_ticket * xfs_log_ticket_get(struct xlog_ticket *ticket);
+struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
void xfs_log_ticket_put(struct xlog_ticket *ticket);
-#endif
-
-
-extern int xlog_debug; /* set to 1 to enable real log */
+void xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
+ xfs_lsn_t *commit_lsn, int flags);
+bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
+void xfs_log_work_queue(struct xfs_mount *mp);
+void xfs_log_worker(struct work_struct *work);
+void xfs_log_quiesce(struct xfs_mount *mp);
#endif /* __XFS_LOG_H__ */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 06:49:19 +0000