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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /fs/xfs/xfs_trans.h
Initial import
Diffstat (limited to 'fs/xfs/xfs_trans.h')
-rw-r--r--fs/xfs/xfs_trans.h245
1 files changed, 245 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
new file mode 100644
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+++ b/fs/xfs/xfs_trans.h
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2000-2002,2005 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_TRANS_H__
+#define __XFS_TRANS_H__
+
+/* kernel only transaction subsystem defines */
+
+struct xfs_buf;
+struct xfs_buftarg;
+struct xfs_efd_log_item;
+struct xfs_efi_log_item;
+struct xfs_inode;
+struct xfs_item_ops;
+struct xfs_log_iovec;
+struct xfs_log_item_desc;
+struct xfs_mount;
+struct xfs_trans;
+struct xfs_trans_res;
+struct xfs_dquot_acct;
+struct xfs_busy_extent;
+
+typedef struct xfs_log_item {
+ struct list_head li_ail; /* AIL pointers */
+ xfs_lsn_t li_lsn; /* last on-disk lsn */
+ struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
+ struct xfs_mount *li_mountp; /* ptr to fs mount */
+ struct xfs_ail *li_ailp; /* ptr to AIL */
+ uint li_type; /* item type */
+ uint li_flags; /* misc flags */
+ struct xfs_log_item *li_bio_list; /* buffer item list */
+ void (*li_cb)(struct xfs_buf *,
+ struct xfs_log_item *);
+ /* buffer item iodone */
+ /* callback func */
+ const struct xfs_item_ops *li_ops; /* function list */
+
+ /* delayed logging */
+ struct list_head li_cil; /* CIL pointers */
+ struct xfs_log_vec *li_lv; /* active log vector */
+ xfs_lsn_t li_seq; /* CIL commit seq */
+} xfs_log_item_t;
+
+#define XFS_LI_IN_AIL 0x1
+#define XFS_LI_ABORTED 0x2
+
+#define XFS_LI_FLAGS \
+ { XFS_LI_IN_AIL, "IN_AIL" }, \
+ { XFS_LI_ABORTED, "ABORTED" }
+
+struct xfs_item_ops {
+ void (*iop_size)(xfs_log_item_t *, int *, int *);
+ void (*iop_format)(xfs_log_item_t *, struct xfs_log_vec *);
+ void (*iop_pin)(xfs_log_item_t *);
+ void (*iop_unpin)(xfs_log_item_t *, int remove);
+ uint (*iop_push)(struct xfs_log_item *, struct list_head *);
+ void (*iop_unlock)(xfs_log_item_t *);
+ xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
+ void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
+};
+
+void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item,
+ int type, const struct xfs_item_ops *ops);
+
+/*
+ * Return values for the iop_push() routines.
+ */
+#define XFS_ITEM_SUCCESS 0
+#define XFS_ITEM_PINNED 1
+#define XFS_ITEM_LOCKED 2
+#define XFS_ITEM_FLUSHING 3
+
+
+/*
+ * This is the structure maintained for every active transaction.
+ */
+typedef struct xfs_trans {
+ unsigned int t_magic; /* magic number */
+ unsigned int t_type; /* transaction type */
+ unsigned int t_log_res; /* amt of log space resvd */
+ unsigned int t_log_count; /* count for perm log res */
+ unsigned int t_blk_res; /* # of blocks resvd */
+ unsigned int t_blk_res_used; /* # of resvd blocks used */
+ unsigned int t_rtx_res; /* # of rt extents resvd */
+ unsigned int t_rtx_res_used; /* # of resvd rt extents used */
+ struct xlog_ticket *t_ticket; /* log mgr ticket */
+ xfs_lsn_t t_lsn; /* log seq num of start of
+ * transaction. */
+ xfs_lsn_t t_commit_lsn; /* log seq num of end of
+ * transaction. */
+ struct xfs_mount *t_mountp; /* ptr to fs mount struct */
+ struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
+ unsigned int t_flags; /* misc flags */
+ int64_t t_icount_delta; /* superblock icount change */
+ int64_t t_ifree_delta; /* superblock ifree change */
+ int64_t t_fdblocks_delta; /* superblock fdblocks chg */
+ int64_t t_res_fdblocks_delta; /* on-disk only chg */
+ int64_t t_frextents_delta;/* superblock freextents chg*/
+ int64_t t_res_frextents_delta; /* on-disk only chg */
+#if defined(DEBUG) || defined(XFS_WARN)
+ int64_t t_ag_freeblks_delta; /* debugging counter */
+ int64_t t_ag_flist_delta; /* debugging counter */
+ int64_t t_ag_btree_delta; /* debugging counter */
+#endif
+ int64_t t_dblocks_delta;/* superblock dblocks change */
+ int64_t t_agcount_delta;/* superblock agcount change */
+ int64_t t_imaxpct_delta;/* superblock imaxpct change */
+ int64_t t_rextsize_delta;/* superblock rextsize chg */
+ int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
+ int64_t t_rblocks_delta;/* superblock rblocks change */
+ int64_t t_rextents_delta;/* superblocks rextents chg */
+ int64_t t_rextslog_delta;/* superblocks rextslog chg */
+ struct list_head t_items; /* log item descriptors */
+ struct list_head t_busy; /* list of busy extents */
+ unsigned long t_pflags; /* saved process flags state */
+} xfs_trans_t;
+
+/*
+ * XFS transaction mechanism exported interfaces that are
+ * actually macros.
+ */
+#define xfs_trans_get_log_res(tp) ((tp)->t_log_res)
+#define xfs_trans_get_log_count(tp) ((tp)->t_log_count)
+#define xfs_trans_get_block_res(tp) ((tp)->t_blk_res)
+#define xfs_trans_set_sync(tp) ((tp)->t_flags |= XFS_TRANS_SYNC)
+
+#if defined(DEBUG) || defined(XFS_WARN)
+#define xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
+#define xfs_trans_agflist_delta(tp, d) ((tp)->t_ag_flist_delta += (int64_t)d)
+#define xfs_trans_agbtree_delta(tp, d) ((tp)->t_ag_btree_delta += (int64_t)d)
+#else
+#define xfs_trans_agblocks_delta(tp, d)
+#define xfs_trans_agflist_delta(tp, d)
+#define xfs_trans_agbtree_delta(tp, d)
+#endif
+
+/*
+ * XFS transaction mechanism exported interfaces.
+ */
+xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
+xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, xfs_km_flags_t);
+xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
+int xfs_trans_reserve(struct xfs_trans *, struct xfs_trans_res *,
+ uint, uint);
+void xfs_trans_mod_sb(xfs_trans_t *, uint, int64_t);
+
+struct xfs_buf *xfs_trans_get_buf_map(struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ struct xfs_buf_map *map, int nmaps,
+ uint flags);
+
+static inline struct xfs_buf *
+xfs_trans_get_buf(
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ xfs_daddr_t blkno,
+ int numblks,
+ uint flags)
+{
+ DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
+ return xfs_trans_get_buf_map(tp, target, &map, 1, flags);
+}
+
+int xfs_trans_read_buf_map(struct xfs_mount *mp,
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ struct xfs_buf_map *map, int nmaps,
+ xfs_buf_flags_t flags,
+ struct xfs_buf **bpp,
+ const struct xfs_buf_ops *ops);
+
+static inline int
+xfs_trans_read_buf(
+ struct xfs_mount *mp,
+ struct xfs_trans *tp,
+ struct xfs_buftarg *target,
+ xfs_daddr_t blkno,
+ int numblks,
+ xfs_buf_flags_t flags,
+ struct xfs_buf **bpp,
+ const struct xfs_buf_ops *ops)
+{
+ DEFINE_SINGLE_BUF_MAP(map, blkno, numblks);
+ return xfs_trans_read_buf_map(mp, tp, target, &map, 1,
+ flags, bpp, ops);
+}
+
+struct xfs_buf *xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);
+
+void xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
+void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
+void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
+void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
+void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
+struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
+void xfs_efi_release(struct xfs_efi_log_item *, uint);
+void xfs_trans_log_efi_extent(xfs_trans_t *,
+ struct xfs_efi_log_item *,
+ xfs_fsblock_t,
+ xfs_extlen_t);
+struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
+ struct xfs_efi_log_item *,
+ uint);
+void xfs_trans_log_efd_extent(xfs_trans_t *,
+ struct xfs_efd_log_item *,
+ xfs_fsblock_t,
+ xfs_extlen_t);
+int xfs_trans_commit(xfs_trans_t *, uint flags);
+int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
+void xfs_trans_cancel(xfs_trans_t *, int);
+int xfs_trans_ail_init(struct xfs_mount *);
+void xfs_trans_ail_destroy(struct xfs_mount *);
+
+void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
+ enum xfs_blft);
+void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp,
+ struct xfs_buf *src_bp);
+
+extern kmem_zone_t *xfs_trans_zone;
+extern kmem_zone_t *xfs_log_item_desc_zone;
+
+#endif /* __XFS_TRANS_H__ */