+ maple_tree-print-store-type-in-mas_dump.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: maple_tree: print store type in mas_dump()
has been added to the -mm mm-unstable branch.  Its filename is
     maple_tree-print-store-type-in-mas_dump.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-print-store-type-in-mas_dump.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: maple_tree: print store type in mas_dump()
Date: Wed, 14 Aug 2024 12:19:35 -0400

Knowing the store type of the maple state could be helpful for debugging.
Have mas_dump() print mas->store_type.

Link: https://lkml.kernel.org/r/20240814161944.55347-9-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/maple_tree.c |   34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

--- a/lib/maple_tree.c~maple_tree-print-store-type-in-mas_dump
+++ a/lib/maple_tree.c
@@ -7760,6 +7760,40 @@ void mas_dump(const struct ma_state *mas
 		break;
 	}
 
+	pr_err("Store Type: ");
+	switch (mas->store_type) {
+	case wr_invalid:
+		pr_err("invalid store type\n");
+		break;
+	case wr_new_root:
+		pr_err("new_root\n");
+		break;
+	case wr_store_root:
+		pr_err("store_root\n");
+		break;
+	case wr_exact_fit:
+		pr_err("exact_fit\n");
+		break;
+	case wr_split_store:
+		pr_err("split_store\n");
+		break;
+	case wr_slot_store:
+		pr_err("slot_store\n");
+		break;
+	case wr_append:
+		pr_err("append\n");
+		break;
+	case wr_node_store:
+		pr_err("node_store\n");
+		break;
+	case wr_spanning_store:
+		pr_err("spanning_store\n");
+		break;
+	case wr_rebalance:
+		pr_err("rebalance\n");
+		break;
+	}
+
 	pr_err("[%u/%u] index=%lx last=%lx\n", mas->offset, mas->end,
 	       mas->index, mas->last);
 	pr_err("     min=%lx max=%lx alloc=%p, depth=%u, flags=%x\n",
_

Patches currently in -mm which might be from sidhartha.kumar@oracle.com are

maple_tree-reset-mas-index-and-mas-last-on-write-retries.patch
maple_tree-add-test-to-replicate-low-memory-race-conditions.patch
maple_tree-introduce-store_type-enum.patch
maple_tree-introduce-mas_wr_prealloc_setup.patch
maple_tree-move-up-mas_wr_store_setup-and-mas_wr_prealloc_setup.patch
maple_tree-introduce-mas_wr_store_type.patch
maple_tree-remove-mas_destroy-from-mas_nomem.patch
maple_tree-preallocate-nodes-in-mas_erase.patch
maple_tree-use-mas_store_gfp-in-mtree_store_range.patch
maple_tree-print-store-type-in-mas_dump.patch
maple_tree-use-store-type-in-mas_wr_store_entry.patch
maple_tree-convert-mas_insert-to-preallocate-nodes.patch
maple_tree-simplify-mas_commit_b_node.patch
maple_tree-remove-mas_wr_modify.patch
maple_tree-have-mas_store-allocate-nodes-if-needed.patch
maple_tree-remove-node-allocations-from-various-write-helper-functions.patch
maple_tree-remove-repeated-sanity-checks-from-write-helper-functions.patch
maple_tree-remove-unneeded-mas_wr_walk-in-mas_store_prealloc.patch
maple_tree-make-write-helper-functions-void.patch