diff mbox series

[v2,43/70] fs/proc/base: Use maple tree iterators in place of linked list

Message ID 20210112161240.2024684-44-Liam.Howlett@Oracle.com (mailing list archive)
State New, archived
Headers show
Series RFC mm: Introducing the Maple Tree | expand

Commit Message

Liam R. Howlett Jan. 12, 2021, 4:12 p.m. UTC 
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
 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 b362523a9829a..0a7d4d3d6ae9b 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2316,6 +2316,7 @@  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);
 
@@ -2343,6 +2344,7 @@  proc_map_files_readdir(struct file *file, struct dir_context *ctx)
 	}
 
 	nr_files = 0;
+	mas.tree = &mm->mm_mt;
 
 	/*
 	 * We need two passes here:
@@ -2354,7 +2356,8 @@  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)