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authorEric Dumazet <edumazet@google.com>2021-11-05 13:39:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-06 13:30:37 -0700
commit7cc7913e8e61ac436497d01a64963770d1600f5d (patch)
tree5eee9a1b67fde18ea2ff3a26b94041d4a8c67bb8 /mm/vmalloc.c
parent51e50b3a22937ab7b350f05af7e3b79b7ff73dd3 (diff)
mm/vmalloc: make sure to dump unpurged areas in /proc/vmallocinfo
If last va found in vmap_area_list does not have a vm pointer, vmallocinfo.s_show() returns 0, and show_purge_info() is not called as it should. Link: https://lkml.kernel.org/r/20211001170815.73321-1-eric.dumazet@gmail.com Fixes: dd3b8353bae7 ("mm/vmalloc: do not keep unpurged areas in the busy tree") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Pengfei Li <lpf.vector@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
-rw-r--r--mm/vmalloc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 6c1b97fd9b3d..0a740fb055ec 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -3913,7 +3913,7 @@ static int s_show(struct seq_file *m, void *p)
(void *)va->va_start, (void *)va->va_end,
va->va_end - va->va_start);
- return 0;
+ goto final;
}
v = va->vm;
@@ -3954,6 +3954,7 @@ static int s_show(struct seq_file *m, void *p)
/*
* As a final step, dump "unpurged" areas.
*/
+final:
if (list_is_last(&va->list, &vmap_area_list))
show_purge_info(m);