From dd6bfa531409bf03c3d489e63779783e4f538b7a Mon Sep 17 00:00:00 2001 From: "Liam R. Howlett" Date: Wed, 20 Jul 2022 02:17:57 +0000 Subject: [PATCH] fs/proc/base: use maple tree iterators in place of linked list Link: https://lkml.kernel.org/r/20220504011345.662299-27-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20220621204632.3370049-43-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20220720021727.17018-43-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett Cc: Catalin Marinas Cc: David Howells Cc: "Matthew Wilcox (Oracle)" Cc: SeongJae Park Cc: Vlastimil Babka Cc: Will Deacon Cc: Davidlohr Bueso Cc: David Hildenbrand Cc: Hulk Robot Cc: Lukas Bulwahn Cc: Sven Schnelle Cc: Yang Yingliang Signed-off-by: Andrew Morton --- fs/proc/base.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/proc/base.c b/fs/proc/base.c index 93f7e3d971e4..0b72a6d8aac3 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2350,6 +2350,7 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) GENRADIX(struct map_files_info) fa; struct map_files_info *p; int ret; + MA_STATE(mas, NULL, 0, 0); genradix_init(&fa); @@ -2377,6 +2378,7 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) } nr_files = 0; + mas.tree = &mm->mm_mt; /* * We need two passes here: @@ -2388,7 +2390,8 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) * routine might require mmap_lock taken in might_fault(). */ - for (vma = mm->mmap, pos = 2; vma; vma = vma->vm_next) { + pos = 2; + mas_for_each(&mas, vma, ULONG_MAX) { if (!vma->vm_file) continue; if (++pos <= ctx->pos) -- 2.49.0