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Message-ID: <20220621204632.3370049-43-Liam.Howlett@oracle.com>
Date: Tue, 21 Jun 2022 20:47:07 +0000
From: Liam Howlett <liam.howlett@...cle.com>
To: "maple-tree@...ts.infradead.org" <maple-tree@...ts.infradead.org>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
"damon @ lists . linux . dev" <damon@...ts.linux.dev>,
SeongJae Park <sj@...nel.org>,
David Hildenbrand <david@...hat.com>
Subject: [PATCH v10 42/69] fs/proc/base: use maple tree iterators in place of
linked list
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
Link: https://lkml.kernel.org/r/20220504011345.662299-27-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: David Howells <dhowells@...hat.com>
Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc: SeongJae Park <sj@...nel.org>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: Will Deacon <will@...nel.org>
Cc: Davidlohr Bueso <dave@...olabs.net>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---
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 8dfa36a99c74..617816168748 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2322,6 +2322,7 @@ 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);
@@ -2349,6 +2350,7 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx)
}
nr_files = 0;
+ mas.tree = &mm->mm_mt;
/*
* We need two passes here:
@@ -2360,7 +2362,8 @@ 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)
--
2.35.1
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