libxfs: update xfs_log_recover.h to kernel version as of Linux 6.16

None of this is used in userland, but it will make automatically
applying kernel changes much easier.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>

diff --git a/libxfs/xfs_log_recover.h b/libxfs/xfs_log_recover.h
index 1745de97e918c479972d3fcff6c8f208444267e0..66c7916fb5cd5ef269ef82bb6e8ace0c1510f649 100644 (file)
--- a/libxfs/xfs_log_recover.h
+++ b/libxfs/xfs_log_recover.h
@@ -6,6 +6,84 @@
 #ifndef        __XFS_LOG_RECOVER_H__
 #define __XFS_LOG_RECOVER_H__
 
+/*
+ * Each log item type (XFS_LI_*) gets its own xlog_recover_item_ops to
+ * define how recovery should work for that type of log item.
+ */
+struct xlog_recover_item;
+struct xfs_defer_op_type;
+
+/* Sorting hat for log items as they're read in. */
+enum xlog_recover_reorder {
+       XLOG_REORDER_BUFFER_LIST,
+       XLOG_REORDER_ITEM_LIST,
+       XLOG_REORDER_INODE_BUFFER_LIST,
+       XLOG_REORDER_CANCEL_LIST,
+};
+
+struct xlog_recover_item_ops {
+       uint16_t        item_type;      /* XFS_LI_* type code. */
+
+       /*
+        * Help sort recovered log items into the order required to replay them
+        * correctly.  Log item types that always use XLOG_REORDER_ITEM_LIST do
+        * not have to supply a function here.  See the comment preceding
+        * xlog_recover_reorder_trans for more details about what the return
+        * values mean.
+        */
+       enum xlog_recover_reorder (*reorder)(struct xlog_recover_item *item);
+
+       /* Start readahead for pass2, if provided. */
+       void (*ra_pass2)(struct xlog *log, struct xlog_recover_item *item);
+
+       /* Do whatever work we need to do for pass1, if provided. */
+       int (*commit_pass1)(struct xlog *log, struct xlog_recover_item *item);
+
+       /*
+        * This function should do whatever work is needed for pass2 of log
+        * recovery, if provided.
+        *
+        * If the recovered item is an intent item, this function should parse
+        * the recovered item to construct an in-core log intent item and
+        * insert it into the AIL.  The in-core log intent item should have 1
+        * refcount so that the item is freed either (a) when we commit the
+        * recovered log item for the intent-done item; (b) replay the work and
+        * log a new intent-done item; or (c) recovery fails and we have to
+        * abort.
+        *
+        * If the recovered item is an intent-done item, this function should
+        * parse the recovered item to find the id of the corresponding intent
+        * log item.  Next, it should find the in-core log intent item in the
+        * AIL and release it.
+        */
+       int (*commit_pass2)(struct xlog *log, struct list_head *buffer_list,
+                           struct xlog_recover_item *item, xfs_lsn_t lsn);
+};
+
+extern const struct xlog_recover_item_ops xlog_icreate_item_ops;
+extern const struct xlog_recover_item_ops xlog_buf_item_ops;
+extern const struct xlog_recover_item_ops xlog_inode_item_ops;
+extern const struct xlog_recover_item_ops xlog_dquot_item_ops;
+extern const struct xlog_recover_item_ops xlog_quotaoff_item_ops;
+extern const struct xlog_recover_item_ops xlog_bui_item_ops;
+extern const struct xlog_recover_item_ops xlog_bud_item_ops;
+extern const struct xlog_recover_item_ops xlog_efi_item_ops;
+extern const struct xlog_recover_item_ops xlog_efd_item_ops;
+extern const struct xlog_recover_item_ops xlog_rui_item_ops;
+extern const struct xlog_recover_item_ops xlog_rud_item_ops;
+extern const struct xlog_recover_item_ops xlog_cui_item_ops;
+extern const struct xlog_recover_item_ops xlog_cud_item_ops;
+extern const struct xlog_recover_item_ops xlog_attri_item_ops;
+extern const struct xlog_recover_item_ops xlog_attrd_item_ops;
+extern const struct xlog_recover_item_ops xlog_xmi_item_ops;
+extern const struct xlog_recover_item_ops xlog_xmd_item_ops;
+extern const struct xlog_recover_item_ops xlog_rtefi_item_ops;
+extern const struct xlog_recover_item_ops xlog_rtefd_item_ops;
+extern const struct xlog_recover_item_ops xlog_rtrui_item_ops;
+extern const struct xlog_recover_item_ops xlog_rtrud_item_ops;
+extern const struct xlog_recover_item_ops xlog_rtcui_item_ops;
+extern const struct xlog_recover_item_ops xlog_rtcud_item_ops;
+
 /*
  * Macros, structures, prototypes for internal log manager use.
  */
@@ -24,10 +102,10 @@
  */
 struct xlog_recover_item {
        struct list_head        ri_list;
-       int                     ri_type;
        int                     ri_cnt; /* count of regions found */
        int                     ri_total;       /* total regions */
-       xfs_log_iovec_t         *ri_buf;        /* ptr to regions buffer */
+       struct xfs_log_iovec    *ri_buf;        /* ptr to regions buffer */
+       const struct xlog_recover_item_ops *ri_ops;
 };
 
 struct xlog_recover {
@@ -41,7 +119,56 @@ struct xlog_recover {
 
 #define ITEM_TYPE(i)   (*(unsigned short *)(i)->ri_buf[0].i_addr)
 
+#define        XLOG_RECOVER_CRCPASS    0
 #define        XLOG_RECOVER_PASS1      1
 #define        XLOG_RECOVER_PASS2      2
 
+void xlog_buf_readahead(struct xlog *log, xfs_daddr_t blkno, uint len,
+               const struct xfs_buf_ops *ops);
+bool xlog_is_buffer_cancelled(struct xlog *log, xfs_daddr_t blkno, uint len);
+
+int xlog_recover_iget(struct xfs_mount *mp, xfs_ino_t ino,
+               struct xfs_inode **ipp);
+int xlog_recover_iget_handle(struct xfs_mount *mp, xfs_ino_t ino, uint32_t gen,
+               struct xfs_inode **ipp);
+void xlog_recover_release_intent(struct xlog *log, unsigned short intent_type,
+               uint64_t intent_id);
+int xlog_alloc_buf_cancel_table(struct xlog *log);
+void xlog_free_buf_cancel_table(struct xlog *log);
+
+#ifdef DEBUG
+void xlog_check_buf_cancel_table(struct xlog *log);
+#else
+#define xlog_check_buf_cancel_table(log) do { } while (0)
+#endif
+
+/*
+ * Transform a regular reservation into one suitable for recovery of a log
+ * intent item.
+ *
+ * Intent recovery only runs a single step of the transaction chain and defers
+ * the rest to a separate transaction.  Therefore, we reduce logcount to 1 here
+ * to avoid livelocks if the log grant space is nearly exhausted due to the
+ * recovered intent pinning the tail.  Keep the same logflags to avoid tripping
+ * asserts elsewhere.  Struct copies abound below.
+ */
+static inline struct xfs_trans_res
+xlog_recover_resv(const struct xfs_trans_res *r)
+{
+       struct xfs_trans_res ret = {
+               .tr_logres      = r->tr_logres,
+               .tr_logcount    = 1,
+               .tr_logflags    = r->tr_logflags,
+       };
+
+       return ret;
+}
+
+struct xfs_defer_pending;
+
+void xlog_recover_intent_item(struct xlog *log, struct xfs_log_item *lip,
+               xfs_lsn_t lsn, const struct xfs_defer_op_type *ops);
+int xlog_recover_finish_intent(struct xfs_trans *tp,
+               struct xfs_defer_pending *dfp);
+
 #endif /* __XFS_LOG_RECOVER_H__ */