diff mbox series

[v12,42/69] fs/proc/base: use maple tree iterators in place of linked list

Message ID 20220720021727.17018-43-Liam.Howlett@oracle.com (mailing list archive)
State New
Headers show
Series Introducing the Maple Tree | expand

Commit Message

Liam R. Howlett July 20, 2022, 2:17 a.m. UTC 
From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>

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
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>
---
 fs/proc/base.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

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)