From: Liam Howlett <liam.howlett@oracle.com>
To: "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
"damon @ lists . linux . dev" <damon@lists.linux.dev>,
SeongJae Park <sj@kernel.org>,
David Hildenbrand <david@redhat.com>
Subject: [PATCH v10 29/69] mm/mmap: change do_brk_munmap() to use do_mas_align_munmap()
Date: Tue, 21 Jun 2022 20:47:02 +0000 [thread overview]
Message-ID: <20220621204632.3370049-30-Liam.Howlett@oracle.com> (raw)
In-Reply-To: <20220621204632.3370049-1-Liam.Howlett@oracle.com>
From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
do_brk_munmap() has already aligned the address and has a maple tree state
to be used. Use the new do_mas_align_munmap() to avoid unnecessary
alignment and error checks.
Link: https://lkml.kernel.org/r/20220504011345.662299-14-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20220519150509.1290067-1-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/mmap.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/mmap.c b/mm/mmap.c
index 19d2ddbb9a97..6ae0a8cf9956 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3072,14 +3072,14 @@ static int do_brk_munmap(struct ma_state *mas, struct vm_area_struct *vma,
struct mm_struct *mm = vma->vm_mm;
struct vm_area_struct unmap;
unsigned long unmap_pages;
- int ret = 1;
+ int ret;
arch_unmap(mm, newbrk, oldbrk);
- if (likely((vma->vm_end < oldbrk) ||
- ((vma->vm_start == newbrk) && (vma->vm_end == oldbrk)))) {
+ if (likely((vma->vm_end < oldbrk) || (vma->vm_start >= newbrk))) {
/* remove entire mapping(s) */
- ret = do_mas_munmap(mas, mm, newbrk, oldbrk-newbrk, uf, true);
+ ret = do_mas_align_munmap(mas, vma, mm, newbrk, oldbrk, uf,
+ true);
goto munmap_full_vma;
}
--
2.35.1
next prev parent reply other threads:[~2022-06-21 20:55 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-21 20:46 [PATCH v10 00/69] Introducing the Maple Tree Liam Howlett
2022-06-21 20:46 ` [PATCH v10 01/69] Maple Tree: add new data structure Liam Howlett
2022-06-21 20:46 ` [PATCH v10 04/69] radix tree test suite: add allocation counts and size to kmem_cache Liam Howlett
2022-06-21 20:46 ` [PATCH v10 02/69] radix tree test suite: add pr_err define Liam Howlett
2022-06-21 20:46 ` [PATCH v10 03/69] radix tree test suite: add kmem_cache_set_non_kernel() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 05/69] radix tree test suite: add support for slab bulk APIs Liam Howlett
2022-06-21 20:46 ` [PATCH v10 06/69] radix tree test suite: add lockdep_is_held to header Liam Howlett
2022-06-21 20:46 ` [PATCH v10 07/69] lib/test_maple_tree: add testing for maple tree Liam Howlett
2022-06-21 20:46 ` [PATCH v10 08/69] mm: start tracking VMAs with " Liam Howlett
2022-06-21 20:46 ` [PATCH v10 10/69] mmap: use the VMA iterator in count_vma_pages_range() Liam Howlett
2022-06-21 21:13 ` David Hildenbrand
2022-06-24 13:10 ` Liam Howlett
2022-06-21 20:46 ` [PATCH v10 09/69] mm: add VMA iterator Liam Howlett
2022-06-21 21:10 ` David Hildenbrand
2022-06-23 17:03 ` Matthew Wilcox
2022-06-24 14:31 ` Liam Howlett
2022-06-21 20:46 ` [PATCH v10 11/69] mm/mmap: use the maple tree in find_vma() instead of the rbtree Liam Howlett
2022-06-21 21:04 ` David Hildenbrand
2022-06-24 13:05 ` Liam Howlett
2022-06-21 20:46 ` [PATCH v10 13/69] mm/mmap: use maple tree for unmapped_area{_topdown} Liam Howlett
2022-06-23 17:25 ` David Hildenbrand
2022-07-14 0:47 ` Liam Howlett
2022-07-09 7:29 ` Alexander Gordeev
2022-07-12 1:49 ` Liam Howlett
2022-07-19 14:20 ` Sven Schnelle
2022-07-19 14:54 ` Liam Howlett
2022-06-21 20:46 ` [PATCH v10 14/69] kernel/fork: use maple tree for dup_mmap() during forking Liam Howlett
2022-06-23 18:42 ` David Hildenbrand
2022-07-13 19:05 ` Liam Howlett
2022-06-21 20:46 ` [PATCH v10 12/69] mm/mmap: use the maple tree for find_vma_prev() instead of the rbtree Liam Howlett
2022-06-21 21:17 ` David Hildenbrand
2022-06-21 20:46 ` [PATCH v10 17/69] mm: remove rb tree Liam Howlett
2022-06-21 20:46 ` [PATCH v10 16/69] proc: remove VMA rbtree use from nommu Liam Howlett
2022-06-21 20:46 ` [PATCH v10 15/69] damon: convert __damon_va_three_regions to use the VMA iterator Liam Howlett
2022-06-23 18:47 ` David Hildenbrand
2022-06-21 20:46 ` [PATCH v10 20/69] mm: optimize find_exact_vma() to use vma_lookup() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 19/69] xen: use vma_lookup() in privcmd_ioctl_mmap() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 18/69] mmap: change zeroing of maple tree in __vma_adjust() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 23/69] mm: use maple tree operations for find_vma_intersection() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 22/69] mm/mmap: change do_brk_flags() to expand existing VMA and add do_brk_munmap() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 21/69] mm/khugepaged: optimize collapse_pte_mapped_thp() by using vma_lookup() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 25/69] mm: remove vmacache Liam Howlett
2022-06-21 20:46 ` [PATCH v10 24/69] mm/mmap: use advanced maple tree API for mmap_region() Liam Howlett
2022-06-21 20:46 ` [PATCH v10 26/69] mm: convert vma_lookup() to use mtree_load() Liam Howlett
2022-06-21 20:47 ` [PATCH v10 27/69] mm/mmap: move mmap_region() below do_munmap() Liam Howlett
2022-06-21 20:47 ` [PATCH v10 28/69] mm/mmap: reorganize munmap to use maple states Liam Howlett
2022-06-21 20:47 ` [PATCH v10 31/69] arm64: Change elfcore for_each_mte_vma() to use VMA iterator Liam Howlett
2022-06-21 20:47 ` Liam Howlett [this message]
2022-06-21 20:47 ` [PATCH v10 30/69] arm64: remove mmap linked list from vdso Liam Howlett
2022-06-21 20:47 ` [PATCH v10 34/69] s390: remove vma linked list walks Liam Howlett
2022-06-21 20:47 ` [PATCH v10 35/69] x86: " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 33/69] powerpc: remove mmap " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 32/69] parisc: remove mmap linked list from cache handling Liam Howlett
2022-06-21 20:47 ` [PATCH v10 38/69] optee: remove vma linked list walk Liam Howlett
2022-06-21 20:47 ` [PATCH v10 39/69] um: " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 36/69] xtensa: remove vma linked list walks Liam Howlett
2022-06-21 20:47 ` [PATCH v10 37/69] cxl: remove vma linked list walk Liam Howlett
2022-06-21 20:47 ` [PATCH v10 41/69] exec: use VMA iterator instead of linked list Liam Howlett
2022-06-21 20:47 ` [PATCH v10 40/69] coredump: remove vma linked list walk Liam Howlett
2022-06-21 20:47 ` [PATCH v10 43/69] fs/proc/task_mmu: stop using linked list and highest_vm_end Liam Howlett
2022-06-21 20:47 ` [PATCH v10 42/69] fs/proc/base: use maple tree iterators in place of linked list Liam Howlett
2022-06-21 20:47 ` [PATCH v10 45/69] ipc/shm: use VMA iterator instead " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 44/69] userfaultfd: use maple tree iterator to iterate VMAs Liam Howlett
2022-06-21 20:47 ` [PATCH v10 47/69] perf: use VMA iterator Liam Howlett
2022-06-21 20:47 ` [PATCH v10 46/69] acct: use VMA iterator instead of linked list Liam Howlett
2022-06-21 20:47 ` [PATCH v10 48/69] sched: use maple tree iterator to walk VMAs Liam Howlett
2022-06-21 20:47 ` [PATCH v10 49/69] fork: use VMA iterator Liam Howlett
2022-06-21 20:47 ` [PATCH v10 50/69] bpf: remove VMA linked list Liam Howlett
2022-06-21 20:47 ` [PATCH v10 51/69] mm/gup: use maple tree navigation instead of " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 52/69] mm/khugepaged: stop using vma " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 53/69] mm/ksm: use vma iterators instead of " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 55/69] mm/memcontrol: stop using mm->highest_vm_end Liam Howlett
2022-06-21 20:47 ` [PATCH v10 54/69] mm/madvise: use vma_find() instead of vma linked list Liam Howlett
2022-06-21 20:47 ` [PATCH v10 57/69] mm/mlock: use vma iterator and maple state " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 58/69] mm/mprotect: use maple tree navigation " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 59/69] mm/mremap: use vma_find_intersection() " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 56/69] mm/mempolicy: use vma iterator & maple state " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 62/69] mm/pagewalk: use vma_find() " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 60/69] mm/msync: " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 61/69] mm/oom_kill: use maple tree iterators " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 63/69] mm/swapfile: use vma iterator " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 65/69] nommu: remove uses of VMA " Liam Howlett
2022-06-21 20:47 ` [PATCH v10 66/69] riscv: use vma iterator for vdso Liam Howlett
2022-06-21 20:47 ` [PATCH v10 64/69] i915: use the VMA iterator Liam Howlett
2022-06-21 20:47 ` [PATCH v10 67/69] mm: remove the vma linked list Liam Howlett
2022-06-21 20:47 ` [PATCH v10 69/69] mm/mmap.c: pass in mapping to __vma_link_file() Liam Howlett
2022-06-21 20:47 ` [PATCH v10 68/69] mm/mmap: drop range_has_overlap() function Liam Howlett
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