The patch titled
Subject: zram_drv: allow reclaim on bio_alloc
has been added to the -mm tree. Its filename is
zram_drv-allow-reclaim-on-bio_alloc.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/zram_drv-allow-reclaim-on-bio_alloc.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/zram_drv-allow-reclaim-on-bio_alloc.patch
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------------------------------------------------------
From: Jaewon Kim <jaewon31.kim@xxxxxxxxxxx>
Subject: zram_drv: allow reclaim on bio_alloc
The read_from_bdev_async is not called on atomic context. So GFP_NOIO is
available rather than GFP_ATOMIC. If there were reclaimable pages with
GFP_NOIO, we can avoid allocation failure and page fault failure.
Link: https://lkml.kernel.org/r/20210908005241.28062-1-jaewon31.kim@xxxxxxxxxxx
Signed-off-by: Jaewon Kim <jaewon31.kim@xxxxxxxxxxx>
Reported-by: Yong-Taek Lee <ytk.lee@xxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/block/zram/zram_drv.c~zram_drv-allow-reclaim-on-bio_alloc
+++ a/drivers/block/zram/zram_drv.c
@@ -587,7 +587,7 @@ static int read_from_bdev_async(struct z
{
struct bio *bio;
- bio = bio_alloc(GFP_ATOMIC, 1);
+ bio = bio_alloc(GFP_NOIO, 1);
if (!bio)
return -ENOMEM;
_
Patches currently in -mm which might be from jaewon31.kim@xxxxxxxxxxx are
zram_drv-allow-reclaim-on-bio_alloc.patch
