[PATCH v7 43/70] fs/proc/base: Use maple tree iterators in place of linked list

Liam Howlett
2022-04-04T14:39:31Z

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 c1031843cc6a..bf85b85cd572 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)
--
2.34.1