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authorLiam R. Howlett <Liam.Howlett@Oracle.com>2022-09-06 22:48:48 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-09-27 05:46:16 +0300
commit524e00b36e8c547f5582eef3fb645a8d9fc5e3df (patch)
tree9bc59d81befe527c3fd2fba8eae465b4eaeaad8d /mm/init-mm.c
parent0c563f148043569c81724ee0f9c5bad5a36b115a (diff)
downloadlinux-524e00b36e8c547f5582eef3fb645a8d9fc5e3df.tar.xz
mm: remove rb tree.
Remove the RB tree and start using the maple tree for vm_area_struct tracking. Drop validate_mm() calls in expand_upwards() and expand_downwards() as the lock is not held. Link: https://lkml.kernel.org/r/20220906194824.2110408-18-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Tested-by: Yu Zhao <yuzhao@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: SeongJae Park <sj@kernel.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/init-mm.c')
-rw-r--r--mm/init-mm.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/init-mm.c b/mm/init-mm.c
index b912b0f2eced..c9327abb771c 100644
--- a/mm/init-mm.c
+++ b/mm/init-mm.c
@@ -1,6 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/mm_types.h>
-#include <linux/rbtree.h>
#include <linux/maple_tree.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
@@ -29,7 +28,6 @@
* and size this cpu_bitmask to NR_CPUS.
*/
struct mm_struct init_mm = {
- .mm_rb = RB_ROOT,
.mm_mt = MTREE_INIT_EXT(mm_mt, MM_MT_FLAGS, init_mm.mmap_lock),
.pgd = swapper_pg_dir,
.mm_users = ATOMIC_INIT(2),