The patch titled
Subject: mm/vmalloc: make sure to dump unpurged areas in /proc/vmallocinfo
has been added to the -mm tree. Its filename is
mm-vmalloc-make-sure-to-dump-unpurged-areas-in-proc-vmallocinfo.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-vmalloc-make-sure-to-dump-unpurged-areas-in-proc-vmallocinfo.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-vmalloc-make-sure-to-dump-unpurged-areas-in-proc-vmallocinfo.patch
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------------------------------------------------------
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Subject: 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@xxxxxxxxx
Fixes: dd3b8353bae7 ("mm/vmalloc: do not keep unpurged areas in the busy tree")
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Cc: Pengfei Li <lpf.vector@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/vmalloc.c~mm-vmalloc-make-sure-to-dump-unpurged-areas-in-proc-vmallocinfo
+++ a/mm/vmalloc.c
@@ -3929,7 +3929,7 @@ static int s_show(struct seq_file *m, vo
(void *)va->va_start, (void *)va->va_end,
va->va_end - va->va_start);
- return 0;
+ goto final;
}
v = va->vm;
@@ -3970,6 +3970,7 @@ static int s_show(struct seq_file *m, vo
/*
* As a final step, dump "unpurged" areas.
*/
+final:
if (list_is_last(&va->list, &vmap_area_list))
show_purge_info(m);
_
Patches currently in -mm which might be from edumazet@xxxxxxxxxx are
mm-mempolicy-do-not-allow-illegal-mpol_f_numa_balancing-mpol_local-in-mbind.patch
mm-vmalloc-make-show_numa_info-aware-of-hugepage-mappings.patch
mm-vmalloc-make-sure-to-dump-unpurged-areas-in-proc-vmallocinfo.patch
mm-large-system-hash-avoid-possible-null-deref-in-alloc_large_system_hash.patch
mm-do-not-acquire-zone-lock-in-is_free_buddy_page.patch
