diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2022-12-05 18:30:07 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-11 18:12:21 -0800 |
| commit | 8614d6c5eda005ad72b37afeaae2879d7c101b18 (patch) | |
| tree | 0d710df89a23714a4f54dac444e8148ba84ef07e /fs | |
| parent | 9d789c3b4170574baa4242dd8cae5988cf97d48d (diff) | |
| download | linux-8614d6c5eda005ad72b37afeaae2879d7c101b18.tar.bz2 | |
mm: do not show fs mm pc for VM_LOCKONFAULT pages
When VM_LOCKONFAULT was added, /proc/PID/smaps wasn't hooked up to it, so
looking at /proc/PID/smaps, it shows '??' instead of something
intelligable. This can be reached by userspace by simply calling
`mlock2(..., MLOCK_ONFAULT);`.
Fix this by adding "lf" to denote VM_LOCKONFAULT.
Link: https://lkml.kernel.org/r/20221205173007.580210-1-Jason@zx2c4.com
Fixes: de60f5f10c58 ("mm: introduce VM_LOCKONFAULT")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/task_mmu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 89338950afd3..e35a0398db63 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -674,6 +674,7 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) [ilog2(VM_RAND_READ)] = "rr", [ilog2(VM_DONTCOPY)] = "dc", [ilog2(VM_DONTEXPAND)] = "de", + [ilog2(VM_LOCKONFAULT)] = "lf", [ilog2(VM_ACCOUNT)] = "ac", [ilog2(VM_NORESERVE)] = "nr", [ilog2(VM_HUGETLB)] = "ht", |