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block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
commit cc8f7fe1f5
upstream.
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@gmail.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220216084038.15635-1-tcs.kernel@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
[DP: Backported to 4.19: Manually added __GFP_ZERO flag]
Signed-off-by: Dragos-Marian Panait <dragos.panait@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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1 changed files with 1 additions and 1 deletions
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@ -1657,7 +1657,7 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
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if (bytes > len)
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bytes = len;
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page = alloc_page(q->bounce_gfp | gfp_mask);
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page = alloc_page(q->bounce_gfp | __GFP_ZERO | gfp_mask);
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if (!page)
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goto cleanup;
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