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; _
