This is a note to let you know that I've just added the patch titled
block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
block-map-add-__gfp_zero-flag-for-alloc_page-in-func.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit d7441483acc310b24c7b1d0b4e714f9f381c7121
Author: Haimin Zhang <tcs.kernel@xxxxxxxxx>
Date: Wed Feb 16 16:40:38 2022 +0800
block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
[ Upstream commit cc8f7fe1f5eab010191aa4570f27641876fa1267 ]
Add __GFP_ZERO flag for alloc_page in function bio_copy_kern to initialize
the buffer of a bio.
Signed-off-by: Haimin Zhang <tcs.kernel@xxxxxxxxx>
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Link: https://lore.kernel.org/r/20220216084038.15635-1-tcs.kernel@xxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/block/blk-map.c b/block/blk-map.c
index 4526adde01564..c7f71d83eff18 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -446,7 +446,7 @@ static struct bio *bio_copy_kern(struct request_queue *q, void *data,
if (bytes > len)
bytes = len;
- page = alloc_page(GFP_NOIO | gfp_mask);
+ page = alloc_page(GFP_NOIO | __GFP_ZERO | gfp_mask);
if (!page)
goto cleanup;
