The quilt patch titled
Subject: maple_tree: use MAS_BUG_ON() prior to calling mas_meta_gap()
has been removed from the -mm tree. Its filename was
maple_tree-use-mas_bug_on-prior-to-calling-mas_meta_gap.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
Subject: maple_tree: use MAS_BUG_ON() prior to calling mas_meta_gap()
Date: Thu, 18 May 2023 10:55:23 -0400
Replace the call to BUG_ON() in mas_meta_gap() with calls before the
function call MAS_BUG_ON() to get more information on error condition.
Link: https://lkml.kernel.org/r/20230518145544.1722059-15-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: David Binderman <dcb314@xxxxxxxxxxx>
Cc: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Vernon Yang <vernon2gm@xxxxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/lib/maple_tree.c~maple_tree-use-mas_bug_on-prior-to-calling-mas_meta_gap
+++ a/lib/maple_tree.c
@@ -963,8 +963,6 @@ static inline unsigned char ma_meta_end(
static inline unsigned char ma_meta_gap(struct maple_node *mn,
enum maple_type mt)
{
- BUG_ON(mt != maple_arange_64);
-
return mn->ma64.meta.gap;
}
@@ -1628,6 +1626,7 @@ static inline unsigned long mas_max_gap(
return mas_leaf_max_gap(mas);
node = mas_mn(mas);
+ MAS_BUG_ON(mas, mt != maple_arange_64);
offset = ma_meta_gap(node, mt);
if (offset == MAPLE_ARANGE64_META_MAX)
return 0;
@@ -1661,6 +1660,7 @@ static inline void mas_parent_gap(struct
pgaps = ma_gaps(pnode, pmt);
ascend:
+ MAS_BUG_ON(mas, pmt != maple_arange_64);
meta_offset = ma_meta_gap(pnode, pmt);
if (meta_offset == MAPLE_ARANGE64_META_MAX)
meta_gap = 0;
_
Patches currently in -mm which might be from Liam.Howlett@xxxxxxxxxx are
mm-mprotect-fix-do_mprotect_pkey-limit-check.patch
maple_tree-add-benchmarking-for-mas_for_each.patch
maple_tree-add-benchmarking-for-mas_prev.patch
mm-move-unmap_vmas-declaration-to-internal-header.patch
mm-change-do_vmi_align_munmap-side-tree-index.patch
mm-remove-prev-check-from-do_vmi_align_munmap.patch
maple_tree-introduce-__mas_set_range.patch
mm-remove-re-walk-from-mmap_region.patch
maple_tree-re-introduce-entry-to-mas_preallocate-arguments.patch
mm-use-vma_iter_clear_gfp-in-nommu.patch
mm-set-up-vma-iterator-for-vma_iter_prealloc-calls.patch
maple_tree-move-mas_wr_end_piv-below-mas_wr_extend_null.patch
maple_tree-update-mas_preallocate-testing.patch
maple_tree-refine-mas_preallocate-node-calculations.patch
mm-mmap-change-vma-iteration-order-in-do_vmi_align_munmap.patch
userfaultfd-fix-regression-in-userfaultfd_unmap_prep.patch
