summaryrefslogtreecommitdiff
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.h195
1 files changed, 104 insertions, 91 deletions
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index bf212772595c..dcc1f44ed68f 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -1,76 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
* All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_LOG_H__
#define __XFS_LOG_H__
+struct xfs_cil_ctx;
+
struct xfs_log_vec {
- struct xfs_log_vec *lv_next; /* next lv in build list */
+ struct list_head lv_list; /* CIL lv chain ptrs */
+ uint32_t lv_order_id; /* chain ordering info */
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 */
+ int lv_buf_used; /* buffer space used so far */
+ int lv_alloc_size; /* size of allocated lv */
};
+/* 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_ICREATE 20
+#define XLOG_REG_TYPE_RUI_FORMAT 21
+#define XLOG_REG_TYPE_RUD_FORMAT 22
+#define XLOG_REG_TYPE_CUI_FORMAT 23
+#define XLOG_REG_TYPE_CUD_FORMAT 24
+#define XLOG_REG_TYPE_BUI_FORMAT 25
+#define XLOG_REG_TYPE_BUD_FORMAT 26
+#define XLOG_REG_TYPE_ATTRI_FORMAT 27
+#define XLOG_REG_TYPE_ATTRD_FORMAT 28
+#define XLOG_REG_TYPE_ATTR_NAME 29
+#define XLOG_REG_TYPE_ATTR_VALUE 30
+#define XLOG_REG_TYPE_XMI_FORMAT 31
+#define XLOG_REG_TYPE_XMD_FORMAT 32
+#define XLOG_REG_TYPE_ATTR_NEWNAME 33
+#define XLOG_REG_TYPE_ATTR_NEWVALUE 34
+#define XLOG_REG_TYPE_MAX 34
+
#define XFS_LOG_VEC_ORDERED (-1)
-static inline void *
-xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
- uint type)
+/*
+ * Calculate the log iovec length for a given user buffer length. Intended to be
+ * used by ->iop_size implementations when sizing buffers of arbitrary
+ * alignments.
+ */
+static inline int
+xlog_calc_iovec_len(int len)
{
- struct xfs_log_iovec *vec = *vecp;
+ return roundup(len, sizeof(uint32_t));
+}
+
+void *xlog_prepare_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
+ uint type);
- if (vec) {
- ASSERT(vec - lv->lv_iovecp < lv->lv_niovecs);
- vec++;
- } else {
- vec = &lv->lv_iovecp[0];
+static inline void
+xlog_finish_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec *vec,
+ int data_len)
+{
+ struct xlog_op_header *oph = vec->i_addr;
+ int len;
+
+ /*
+ * Always round up the length to the correct alignment so callers don't
+ * need to know anything about this log vec layout requirement. This
+ * means we have to zero the area the data to be written does not cover.
+ * This is complicated by fact the payload region is offset into the
+ * logvec region by the opheader that tracks the payload.
+ */
+ len = xlog_calc_iovec_len(data_len);
+ if (len - data_len != 0) {
+ char *buf = vec->i_addr + sizeof(struct xlog_op_header);
+
+ memset(buf + data_len, 0, len - data_len);
}
- vec->i_type = type;
- vec->i_addr = lv->lv_buf + lv->lv_buf_len;
+ /*
+ * The opheader tracks aligned payload length, whilst the logvec tracks
+ * the overall region length.
+ */
+ oph->oh_len = cpu_to_be32(len);
- ASSERT(IS_ALIGNED((unsigned long)vec->i_addr, sizeof(uint64_t)));
+ len += sizeof(struct xlog_op_header);
+ lv->lv_buf_used += len;
+ lv->lv_bytes += len;
+ vec->i_len = len;
- *vecp = vec;
- return vec->i_addr;
+ /* Catch buffer overruns */
+ ASSERT((void *)lv->lv_buf + lv->lv_bytes <=
+ (void *)lv + lv->lv_alloc_size);
}
/*
- * 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.
+ * Copy the amount of data requested by the caller into a new log iovec.
*/
-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;
-}
-
static inline void *
xlog_copy_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
uint type, void *data, int len)
@@ -84,16 +126,6 @@ xlog_copy_iovec(struct xfs_log_vec *lv, struct xfs_log_iovec **vecp,
}
/*
- * 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;
-
-/*
* 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
*/
@@ -124,56 +156,37 @@ struct xlog_ticket;
struct xfs_log_item;
struct xfs_item_ops;
struct xfs_trans;
+struct xlog;
-xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
- struct xlog_ticket *ticket,
- struct xlog_in_core **iclog,
- bool regrant);
-int _xfs_log_force(struct xfs_mount *mp,
- uint flags,
- int *log_forced);
-void xfs_log_force(struct xfs_mount *mp,
- 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_force(struct xfs_mount *mp, uint flags);
+int xfs_log_force_seq(struct xfs_mount *mp, xfs_csn_t seq, uint flags,
+ int *log_forced);
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);
-int xfs_log_mount_cancel(struct xfs_mount *);
+void xfs_log_mount_cancel(struct xfs_mount *);
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,
- struct xlog_in_core *iclog,
- struct xfs_log_callback *callback_entry);
-int xfs_log_release_iclog(struct xfs_mount *mp,
- struct xlog_in_core *iclog);
-int xfs_log_reserve(struct xfs_mount *mp,
- int length,
- int count,
- struct xlog_ticket **ticket,
- uint8_t clientid,
- bool permanent);
-int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
-void xfs_log_unmount(struct xfs_mount *mp);
-int xfs_log_force_umount(struct xfs_mount *mp, int logerror);
+void xfs_log_space_wake(struct xfs_mount *mp);
+int xfs_log_reserve(struct xfs_mount *mp, int length, int count,
+ struct xlog_ticket **ticket, bool permanent);
+int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
+void xfs_log_unmount(struct xfs_mount *mp);
+bool xfs_log_writable(struct xfs_mount *mp);
struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
void xfs_log_ticket_put(struct xlog_ticket *ticket);
-void xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
- xfs_lsn_t *commit_lsn, bool regrant);
+void xlog_cil_process_committed(struct list_head *list);
bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
void xfs_log_work_queue(struct xfs_mount *mp);
-void xfs_log_quiesce(struct xfs_mount *mp);
+int xfs_log_quiesce(struct xfs_mount *mp);
+void xfs_log_clean(struct xfs_mount *mp);
bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);
+bool xlog_force_shutdown(struct xlog *log, uint32_t shutdown_flags);
+
#endif /* __XFS_LOG_H__ */
generated by cgit (git 2.34.1) at 2025-12-25 02:04:46 +0000