The patch titled
Subject: mm/vmalloc: use free_vm_area() if an allocation fails
has been added to the -mm tree. Its filename is
mm-vmalloc-use-free_vm_area-if-an-allocation-fails.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-vmalloc-use-free_vm_area-if-an-allocation-fails.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-vmalloc-use-free_vm_area-if-an-allocation-fails.patch
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------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx>
Subject: mm/vmalloc: use free_vm_area() if an allocation fails
There is a dedicated and separate function that finds and removes a
continuous kernel virtual area. As a final step it also releases the
"area", a descriptor of corresponding vm_struct.
Use free_vmap_area() in the __vmalloc_node_range() instead of open coded
steps which are exactly the same, to perform a cleanup.
Link: https://lkml.kernel.org/r/20201116220033.1837-1-urezki@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@xxxxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/vmalloc.c~mm-vmalloc-use-free_vm_area-if-an-allocation-fails
+++ a/mm/vmalloc.c
@@ -2479,8 +2479,7 @@ static void *__vmalloc_area_node(struct
}
if (!pages) {
- remove_vm_area(area->addr);
- kfree(area);
+ free_vm_area(area);
return NULL;
}
_
Patches currently in -mm which might be from urezki@xxxxxxxxx are
mm-vmalloc-use-free_vm_area-if-an-allocation-fails.patch
mm-vmalloc-rework-the-drain-logic.patch
