From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx> Link: https://lkml.kernel.org/r/20220504011345.662299-27-Liam.Howlett@xxxxxxxxxx Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx> Cc: SeongJae Park <sj@xxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Cc: Will Deacon <will@xxxxxxxxxx> Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- 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
