diff options
| author | David Hildenbrand (Arm) <david@kernel.org> | 2026-09-21 21:59:04 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-10-13 15:55:10 -0700 |
| commit | 75dc2ced92de6ce9b395dc34d6d9eeaeb024f922 (patch) | |
| tree | 6ea587204563b776dfda739962c63f2a7de47345 | |
| parent | 2f5cc467911a3d5ad3f896cde8d4ce1db0c39411 (diff) | |
| download | linux-next-75dc2ced92de6ce9b395dc34d6d9eeaeb024f922.tar.gz linux-next-75dc2ced92de6ce9b395dc34d6d9eeaeb024f922.zip | |
fs/proc/page: clarify comment in get_max_dump_pfn()
pfn_to_online_page() will only succeed on some PFNs within the same
section, not necessarily all. Let's make that clearer.
While at it, rephrase it to "Allow inspection of".
Link: https://lore.kernel.org/20260921-b4-sparsemem_cleanups-v2-12-54d81d65e125@kernel.org
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Qi Zheng <qi.zheng@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Barry Song <baohua@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Baoquan He <baoquan.he@linux.dev>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Brendan Jackman <brendan.jackman@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Danilo Krummrich <dakr@kernel.org>
| -rw-r--r-- | fs/proc/page.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/proc/page.c b/fs/proc/page.c index f90e1030825e..6aa99e42ec22 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -31,10 +31,9 @@ static inline unsigned long get_max_dump_pfn(void) { #ifdef CONFIG_SPARSEMEM /* - * The memmap of early sections is completely populated and marked - * online even if max_pfn does not fall on a section boundary - - * pfn_to_online_page() will succeed on all pages. Allow inspecting - * these memmaps. + * If max_pfn does not fall on a section boundary, pfn_to_online_page() + * can succeed on PFNs beyond max_pfn within the same section. Allow + * inspection of these memmaps. */ return round_up(max_pfn, PAGES_PER_SECTION); #else |