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vdpa_sim_blk: allocate the buffer zeroed
[ Upstream commit0d82410252
] Deleting and recreating a device can lead to having the same content as the old device, so let's always allocate buffers completely zeroed out. Fixes:abebb16254
("vdpa_sim_blk: support shared backend") Suggested-by: Qing Wang <qinwang@redhat.com> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Message-Id: <20231031144339.121453-1-sgarzare@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
50aa75671d
commit
ba9626b4c2
1 changed files with 2 additions and 2 deletions
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@ -437,7 +437,7 @@ static int vdpasim_blk_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
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if (blk->shared_backend) {
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if (blk->shared_backend) {
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blk->buffer = shared_buffer;
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blk->buffer = shared_buffer;
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} else {
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} else {
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blk->buffer = kvmalloc(VDPASIM_BLK_CAPACITY << SECTOR_SHIFT,
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blk->buffer = kvzalloc(VDPASIM_BLK_CAPACITY << SECTOR_SHIFT,
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GFP_KERNEL);
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GFP_KERNEL);
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if (!blk->buffer) {
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if (!blk->buffer) {
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ret = -ENOMEM;
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ret = -ENOMEM;
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@ -495,7 +495,7 @@ static int __init vdpasim_blk_init(void)
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goto parent_err;
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goto parent_err;
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if (shared_backend) {
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if (shared_backend) {
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shared_buffer = kvmalloc(VDPASIM_BLK_CAPACITY << SECTOR_SHIFT,
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shared_buffer = kvzalloc(VDPASIM_BLK_CAPACITY << SECTOR_SHIFT,
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GFP_KERNEL);
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GFP_KERNEL);
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if (!shared_buffer) {
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if (!shared_buffer) {
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ret = -ENOMEM;
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ret = -ENOMEM;
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